Camera having blurring correction apparatus

Claims

What is claimed is:

1. A camera having a blurring correction apparatus comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting the degree of movement of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate the movement of the image of the object;

setting means for setting said exposure time;

calculating means for calculating the amount of movement of the image of the object produced during said exposure time based on the output of said detecting means and said set exposure time; and

prohibiting means for prohibiting an operation of said correcting means when the amount of movement of the image of the object produced during said exposure time is smaller than a predetermined value.

2. The camera according to claim 1, wherein

said detecting means includes moving speed detecting means for detecting the speed of the movement of the image of the object, and

said calculating means calculates the amount of movement of the image of the object produced during said exposure time based on said moving speed and said exposure time.

3. The camera according to claim 2, wherein

said detecting means includes first detecting means for detecting the position of the image of the object at a first time, second detecting means for detecting the position of the image of the object at a second time, a timer for counting a time period from said first time to said second time, and moving amount calculating means for calculating the amount of movement of the image of the object based on the image of the object at said first and second times and an output of said timer; and

said moving speed detecting means includes moving speed calculating means for calculating the speed of movement of the image of the object based on said calculated amount of movement and said output of said timer.

4. The camera according to claim 3, wherein

said correcting means corrects the position of the image of the object by the amount of movement calculated by said moving amount calculating means, wherein

said camera further comprises

determining means for determining that the correction is impossible when said calculated amount of movement is larger than a predetermined value, and warning means for warning in response to an output of said determining means determining that the correction is impossible.

5. The camera according to claim 2, further comprising:

determining means for determining that the correction is impossible when said detected moving speed of the image of the object is higher than a predetermined speed; and

warning means for warning in response to the output of said determining means determining that the correction is impossible.

6. The camera according to claim 1, wherein

said correcting means includes a correcting lens provided in said photographic lens and driving means for driving said correcting lens based on the output of said detecting means to correct the position of the image of the object.

7. The camera according to claim 1, wherein

said detecting means detects the degree of movement of the image of the object due to camera-shake.

8. The camera according to claim 1, further comprising:

switching means for switching a first mode in which the correction is not carried out by said correcting means and a second mode in which the correction is carried out by said correcting means;

exposure control means for carrying out exposure control in said set exposure time;

flash means for emitting flashlight upon exposure;

first limiting means for limiting said exposure time to be shorter than a first predetermined time period which is longer than a flash synchronized limit exposure time in said first mode; and

second limiting means for limiting said exposure time to be shorter than a second predetermined time period which is longer than said first predetermined time period in said second mode.

9. The camera according to claim 1, further comprising

exposure control means for carrying out exposure control in said set exposure time.

10. The camera according to claim 9, further comprising:

flash means for emitting flashlight toward the object upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flashlight upon exposure and a non-emission mode for prohibiting the emission of flashlight; and

emission changing means for changing to said emission mode when said set exposure time is longer than or equal to a predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said predetermined time period.

11. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting the degree of movement of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means, so as t compensate the movement of the image of the object;

determining means for determining, based on the output of said detecting means, as to whether the correction by said correcting means is possible; and

warning means for providing a warning, in response to an output of said determining means, which indicates only that the correction is not possible.

12. The camera according to claim 11, wherein

said detecting means includes moving speed detecting means for detecting the speed of movement of the image of the object, and

said determining means determines that the correction by said correcting means is impossible when said detected moving speed is higher than or equal to a predetermined speed, and determines that the correction by said correcting means is possible when said detected moving speed is lower than said predetermined speed.

13. The camera according to claim 12, wherein

said predetermined speed is a value corresponding to the amount by which the object is enabled to move in a predetermined time period.

14. The camera according to claim 11, wherein

said determining means includes intended-position calculating means for calculating an intended correction position of the image of the object based on the output of said detecting means, and intended-position determining means for determining whether said calculated intended correction position is within a correction enabling range, and

determines based on a determination output of said intended-position determining means that the correction is possible when said intended correction position is within the correction enabling range and that the correction is impossible when said intended correction position is out of the correction enabling range.

15. The camera according to claim 14, wherein

said correcting means includes a correcting lens provided in said photographic lens and driving means responsive to the detection output of said detecting means for driving said correcting lens, and

said correction enabling range is a range for movement of the image of the object corresponding to a range for enabling the drive of said correction lens.

16. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting movement of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate the movement of the image of the object;

switching means for switching a between first mode in which the correction is not carried out by said correcting means and a second mode in which the correction is carried out by said correcting means;

setting means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

first limiting means for limiting said exposure time to be shorter than a first predetermined time period which is longer than a flash synchronized limit exposure time in said first mode; and

second limiting means for limiting said exposure time to be shorter than a second predetermined time period which is longer than said first predetermined time period in said second mode.

17. A camera mountable with an interchangeable lens having correcting means responsive to a signal from said camera for moving the position of an image of an object to be photographed, comprising:

a photographic lens for forming the image of the object;

detecting means for detecting movement of the formed image of the object;

signal outputting means responsive to a detection output of said detecting means for outputting a signal to said correcting means in an interchangeable lens;

determining means for determining whether the mounted interchangeable lens has said correction means;

setting means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

first limiting means for limiting said exposure time to be shorter than a first predetermined time period which is longer than a flash synchronized limit exposure time in response to an output of said determining means determining that the interchangeable lens does not have said correcting means; and

second limiting means for limiting said exposure time to be shorter than a second predetermined time period which is longer than said first predetermined time period in response to the output of said determining means determining that the interchangeable lens does not have said correcting means.

18. The camera according to claim 17, wherein

said exposure control means includes brightness measuring means for measuring color temperature of surrounding light and altering means for altering the ratio of the amount of exposure by flashlight to the amount of exposure by surrounding light based on said measured color temperature.

19. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting movement of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate the movement of the image of the object;

means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time; and

limiting means for limiting said exposure time to be shorter than a predetermined time period which is longer than a flash synchronized limit exposure time.

20. A camera having a blurring correction apparatus,

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting movement of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate the movement of the image of the object;

switching means for switching a first mode in which the correction is not carried out by said correcting means and a second mode in which the correction is carried out by said correcting means;

flash means for emitting flashlight toward the object upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flash light upon exposure and a non-emission mode for prohibiting the emission of flashlight;

setting means for setting exposure time; and

emission changing means for, in said first mode, changing to said emission mode when said set exposure time is longer than or equal to a first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said first predetermined time period, and

in said second mode, changing to said emission mode when said set exposure time is longer than or equal to a second predetermined time period which is longer than said first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said second predetermined time period.

21. A camera mountable with an interchangeable lens having correcting means responsive to a signal from said camera for moving the position of an image of an object to be photographed, comprising:

a photographic lens for forming the image of the object;

detecting means for detecting movement of the formed image of the object;

signal outputting means responsive to an output of said detecting means for outputting a signal to said correcting means in the interchangeable lens;

determining means for determining whether the mounted interchangeable lens has said correcting means;

setting means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

flash means for emitting flashlight upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flashlight upon exposure and a non-emission mode for prohibiting the emission of flashlight; and

emission changing means responsive to an output of said determining means determining that the interchangeable lens does not have said correcting means for changing to said emission mode when said set exposure time is longer than or equal to a first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said first predetermined time period, and

responsive to an output of said determining means determining that the interchangeable lens has said correction means for changing to said emission mode when said set exposure time is longer than or equal to a second predetermined time period which is longer than said first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said second predetermined time period.

22. A camera having a blurring correction apparatus, comprising:

exposure control means for exposing a film by receiving light from an object to be photographed;

flash means for emitting flashlight;

flash controlling means for controlling said flash means to emit flashlight during exposure;

brightness measuring means for measuring color temperature of surrounding light of the object; and

altering means for altering the ratio of the amount of exposure by the flashlight to the amount of exposure by the surrounding light based on said measured color temperature.

23. A camera system including a camera body and an interchangeable lens mounted on said camera body, wherein said camera body includes

detecting means for detecting the movement of an image of an object to be photographed, formed by said lens, and

outputting means for outputting data as to the movement detected by said detecting means; and

said lens includes

inputting means for inputting the data output from said outputting means, and

outputting means for correcting the position of the image of the object on the basis of said input data.

24. The camera system according to claim 23, wherein said correcting means includes

a correction lens for shifting the position of the image of the object,

calculating means for calculating data for driving said correction lens on the basis of said input data, and

driving means for driving said correction lens in accordance with said calculated data.

25. The camera system according to claim 23, wherein said lens further includes

determining means for determining whether or not the correction by said correcting means can be made, on the basis of said input data.

26. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting the movement of the image of the object;

a correction lens for shifting the position of the formed image of the object;

driving means for driving said correction lens in accordance with an output of said detecting means;

exposure control means for controlling exposure; and

initializing means for setting said correction lens in an initial position in response to termination of operation of said exposure control means.

27. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object on the basis of an output of said detecting means so as to compensate the movement of the image of the object;

switching means for switching a first mode in which the correction is not carried out by said correcting mans and a second mode in which the correction is carried out by said correcting means;

flash means for emitting flashlight toward the object upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flash light upon exposure and a non-emission mode for prohibiting the emission of flashlight;

brightness measuring means for measuring brightness of the object; and

emission mode selecting means for selecting said non-emission mode if the measured brightness of the object is higher than a first predetermined value and selecting said emission mode if the measured brightness of the object is lower than said first predetermined value in said first mode, and for selecting said non-emission mode if the measured brightness of the object is higher than a second predetermined value lower than said first predetermined value and selecting said emission mode if the measured brightness is lower than said second predetermined value in said second mode.

28. The camera according to claim 20, further comprising

brightness measuring means for measuring brightness of the object; wherein

said setting means sets exposure time according to said measured brightness of the object.

29. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting the degree of movement of the formed image of the object;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate for movement of the image of the object;

manual switching means for manually switching between a first operating mode in which the correction is not carried out by said correcting means and a second operating mode in which the correction is carried out by said correcting means, in accordance with a camera user's intentions;

exposure controlling means for carrying out exposure in a first exposure mode or a second exposure mode; and

selecting means for selecting the first exposure mode in the first operating mode and for selecting the second exposure mode in the second operating mode.

30. The camera according to claim 29, wherein the exposure controlling means includes

setting means for setting exposure time, and

limiting means for limiting the exposure time to be shorter than a first predetermined time period in the first operating mode and for limiting the exposure time to be shorter than a second predetermined time period which is longer than the first predetermined time period in the second operating mode.

31. A camera mountable with an interchangeable lens having correcting means responsive to a signal from said camera for moving the position of an image of an object to be photographed, comprising

a photographic lens for forming the image of the object;

detecting means for detecting the degree of movement of the formed image of the object;

signal outputting means responsive to a detection output of said detecting means for outputting a signal to said correcting means in an interchangeable lens;

determining means for determining whether an interchangeable lens mounted on the camera has said correcting means;

exposure controlling means for carrying out exposure in a first exposure mode or a second exposure mode; and

selecting means for selecting the first exposure mode when said determining means determines that the mounted interchangeable lens does not have said correcting mans and for selecting the second mode when said determining means determines that the mounted interchangeable lens has said correcting means.

32. The camera according to claim 31, wherein the exposure controlling means includes

setting means for setting exposure time, and

limiting means for limiting the exposure time to be shorter than a first predetermined time period in the first exposure mode and for limiting the exposure time to be shorter than a second predetermined time period which is longer than the first predetermined time period in the second exposure mode.

33. A camera having a blurring correction apparatus comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting the degree of shaking of the camera;

correcting mans operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate for movement of the image of the object caused by shaking of the camera;

setting means for setting said exposure time;

calculating means for calculating the amount of movement of the image of the object produced during said exposure time based on the output of said detecting means and said set exposure time; and

prohibiting means for prohibiting operation of said correcting means when the amount of movement of the image of the object produced during said exposure time is smaller than a predetermined value.

34. The camera of claim 33 wherein said detecting means detects the degree of shaking of the camera by detecting the degree of movement of the formed image of the object.

35. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting the degree of shaking of the camera;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate for movement of the image of the object caused by camera shaking;

determining means for determining, based on the output of said detecting mans, whether the correction by said correcting means is possible; and

warning means responsive to an output of said determining means for warning only that the correction is not possible.

36. The camera of claim 35 wherein said detecting means detects the degree of shaking of the camera by detecting the degree of movement of the formed image of the object.

37. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting shaking of the camera;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate for movement of the image of the object caused by camera shaking;

switching means for switching between a first mode in which the correction is not carried out by said correcting means and a second mode in which the correction is carried out by said correction means;

setting means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

first limiting means for limiting said exposure time to be shorter than a first predetermined time period which is longer than a flash synchronized limit exposure time in said first mode; and

second limiting means for limiting said exposure time to be shorter than a second predetermined time period which is longer than said first predetermined time period in said second mode.

38. The camera of claim 37 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

39. A camera mountable with an interchangeable lens having correcting means responsive to a signal from said camera for moving the position of an image of an object to be photographed, comprising:

a photographic lens for forming the image of the object;

detecting means for detecting shaking of the camera;

signal outputting means responsive to a detection output of said detecting means for outputting a signal to said correcting means in an interchangeable lens;

determining means for determining whether an interchangeable lens mounted on the camera has said correcting means;

setting means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

flash means for emitting flash light upon exposure;

first limiting means for limiting said exposure time to be shorter than a first predetermined time period which is longer than a flash synchronized limit exposure time in response to an output of said determining means determining that the mounted interchangeable lens does not have said correcting means; and

second limiting means for limiting said exposure time to be shorter than a second predetermined time period which is longer than said first predetermined time period in response to the output of said determining means determining that the mounted interchangeable lens does not have said correcting means.

40. The camera of claim 39 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

41. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting shaking of the camera;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate for movement of the image of the object caused by shaking of the camera;

setting means for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

limiting means for limiting said exposure time to be shorter than a predetermined time period which is longer than a flash synchronized limit exposure time.

42. The camera of claim 42 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

43. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting shaking of the camera;

correcting means operative at least during exposure time for correcting the position of the image of the object based on an output of said detecting means so as to compensate for movement of the image of the object caused by shaking of the camera;

switching means for switching between a first mode in which the correction is not carried out by said correcting means and a second mode in which the correction is carried out by said correcting means;

flash means for emitting flash light toward the object upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flash light upon exposure and a non-emission mode for prohibiting the emission of flash light;

setting means for setting exposure time; and

emission changing means for, in said first mode, changing to said emission mode when said set exposure time is longer than or equal to a first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said first predetermined time period, and

in said second mode, changing to said emission mode when said set exposure time is longer than or equal to a second predetermined time period which is longer than said first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said second predetermined time period.

44. The camera of claim 43 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

45. A camera mountable with an interchangeable lens having correcting means responsive to a signal from said camera for moving the position of an image of an object to be photographed, comprising:

a photographic lens for forming the image of the object;

detecting means for detecting shaking of the camera;

signal outputting means responsive to an output of said detecting means for outputting a signal to said correcting means in an interchangeable lens;

determining means for determining whether an interchangeable lens mounted on the camera has said correcting means;

setting mans for setting exposure time;

exposure control means for carrying out exposure in said set exposure time;

flash means for emitting flash light upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flash light upon exposure and a non-emission mode for prohibiting the emission of flash light; and

emission changing means responsive to an output of said determining means determining that the mounted interchangeable lens does not have said correcting means for changing to said emission mode when said set exposure time is longer tan or equal to a first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said first predetermined time period, and

responsive to an output of said determining means determining that the mounted interchangeable lens has said correction means for changing to said emission mode when said set exposure time is longer than or equal to a second predetermined time period which is longer than said first predetermined time period and changing to said non-emission mode when said set exposure time is shorter than said second predetermined time period.

46. The camera of claim 45 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

47. A camera system including a camera body and an interchangeable lens mounted on said camera body, wherein said camera body includes

detecting means for detecting shaking of the camera, and

outputting means for outputting data as to the shaking of the camera detected by said detecting means; and

said lens includes

inputting means for inputting the data output from said outputting means, and

correcting means for varying the position of the image of the object on the basis of said input data.

48. The camera of claim 47 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

49. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting shaking of the camera;

a correction lens for shifting the position of the formed image of the object;

driving means for driving said correction lens in accordance with an output of said detecting means;

exposure control means for controlling exposure; and

initializing means for setting said correction lens in an initial position in response to termination of operation of said exposure control means.

50. The camera of claim 49 wherein said detecting means detects shaking of the camera by detecting movement of the formed image of the object.

51. A camera having a blurring correction apparatus, comprising:

a photographic lens for forming an image of an object to be photographed;

detecting means for detecting shaking of the camera;

correcting means operative at least during exposure time for correcting the position of the image of the object on the basis of an output of said detecting means so as to compensate for movement of the image of the object cased by shaking of the camera;

switching means for switching between a first mode in which the correction is not carried out by said correcting means and a second mode in which the correction is carried out by said correcting means;

flash means for emitting flash light toward the object upon exposure;

flash controlling means for controlling said flash means by selecting an emission mode for emitting flash light upon exposure and a non-emission mode for prohibiting the emission of flash light;

brightness measuring means for measuring brightness of the object; and

emission mode selecting means for selecting said non-emission mode if the measured brightness of the object is higher than a firs predetermined value and selecting said emission mode if the measured brightness of the object is lower than said first predetermined value in said first mode, and for selecting said non-emission mode if the measured brightness of the object is higher than a second predetermined value lower than said first predetermined value and selecting said emission mode if the meas