1. An image pickup apparatus comprising a scene-photographing mode selection switch configured for switchingly enable photographing suitable for a scene to be photographed, and an exposure adjuster configured for adjusting an exposure amount, wherein a scale graduation of an exposure-adjusting amounts to be adjusted by said exposure adjuster is adjustable independently for each of scene-photographing modes.
2. The image pickup apparatus set forth in claim 1, wherein said scale graduation of the exposure-adjusting amount is preliminarily set to an optimum scale graduation for each of the scene-photographing modes.
3. The image pickup apparatus set forth in claim 1, wherein said scale graduations of the exposure-adjusting amounts for the respective scene-photographing modes are set to be independently optimized.
4. The image pickup apparatus set forth in claim 1, wherein a parameter for varying the exposure amount is set to an optimum parameter for each of the scene-photographing modes.
5. The image pickup apparatus set forth in claim 2, wherein a parameter for varying the exposure amount is set to an optimum parameter for each of the scene-photographing modes.
6. The image pickup apparatus set forth in claim 3, wherein a parameter for varying the exposure amount is set to an optimum parameter for each of the scene-photographing modes.
7. The image pickup apparatus set forth in claim 4, wherein said parameter for varying the exposure amount is selected from a shutter speed, an aperture and a photographing sensitivity, and the setting of the parameter to the optimum one for each of the scene-photographing modes means that exposure is adjusted such that while at least one of the exposure amount-varying parameters is fixed, the other is adjusted.
8. The image pickup apparatus set forth in claim 5, wherein said parameter for varying the exposure amount is selected from a shutter speed, an aperture and a photographing sensitivity, and the setting of the parameter to the optimum one for each of the scene-photographing modes means that while exposure is adjusted such that at least one of the exposure amount-varying parameters is fixed, the other is adjusted.
9. The image pickup apparatus set forth in claim 6, wherein said parameter for varying the exposure amount is selected from a shutter speed, an aperture and a photographing sensitivity, and the setting of the parameter to the optimum one for each of the scene-photographing modes means that exposure is adjusted such that while at least one of the exposure amount-varying parameters is fixed, the other is adjusted.
10. An image pickup apparatus comprising a scene-photographing mode selection switch configured for switchingly enable photographing suitable for a scene to be photographed, and an exposure automatic exposure bracketing function effector configured for photographing a plurality of images while an exposure amount is being changed, wherein permissioninhibition of execution of the automatic exposure bracketing function effector is settable independently for scene-photographing modes.
11. The image pickup apparatus set forth in claim 10, wherein a set parameter of a automatic exposure bracketing function is preliminarily set to a premium parameter for each of the scene-photographing modes.
12. The image pickup apparatus set forth in claim 10, wherein the set parameter of a automatic exposure bracketing function can be optimized independently for each of the scene-photographing modes.
13. The image pickup apparatus set forth in claim 11, wherein the set parameter of the automatic exposure bracketing function is a scale graduation of the exposure-adjusting amount.
14. The image pickup apparatus set forth in claim 12, wherein the set parameter of the automatic exposure bracketing function is a scale graduation of the exposure-adjusting amount.
15. The image pickup apparatus set forth in claim 11, wherein said set parameter of the automatic exposure bracketing function is a number of frames to be photographed while the exposure amount is being changed.
16. The image pickup apparatus set forth in claim 12, wherein said set parameter of the automatic exposure bracketing function is a number of frames to be photographed while the exposure amount is being changed.
17. The image pickup apparatus set forth in claim 11, wherein said set parameter of the automatic exposure bracketing function is a standard exposure-adjusting amount.
18. The image pickup apparatus set forth in claim 12, wherein said set parameter of the automatic exposure bracketing function is a standard exposure-adjusting amount.
19. The image pickup apparatus set forth in claim 11, wherein said set parameter of the automatic exposure bracketing function is an order of exposure adjustments.
20. The image pickup apparatus set forth in claim 12, wherein said set parameter of the automatic exposure bracketing function is an order of exposure adjustments.
21. The image pickup apparatus set forth in 11, wherein said parameter for setting the automatic exposure bracketing function is the exposure amount-adjusting parameter, the exposure amount-adjusting parameter is selected from a shutter speed, an aperture and a photographing sensitivity, and exposure is adjusted such that while at least one of the exposure amount-changing parameters is fixed, the other is adjusted.
22. The image pickup apparatus set forth in 12, wherein said parameter for setting the automatic exposure bracketing function is the exposure amount-adjusting parameter, the exposure amount-adjusting parameter is selected from a shutter speed, an aperture and a photographing sensitivity, and exposure is adjusted such that while at least one of the exposure amount-changing parameters is fixed, the other is adjusted.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-27. (canceled)
28. A braking device for a passenger conveyor having at least one moveable part with at least one projection on a side of the moveable part, the projection projecting away from a surface of the moveable part at least partially in a direction that is generally parallel to an axis of rotation about which the moveable part rotates, the braking device comprising:
a braking element having a braking portion that is selectively engageable with the moving part,
the braking element being moveable in a first direction into an engagement position where the braking element engages the projection on the moveable part,
the braking element being moveable in a second, different direction from the engagement position to a braking position, the braking element moving into the braking position responsive to movement of the moveable part urging the braking element toward the braking position,
the braking element blocking movement of the moveable part beyond the braking position once the braking element reaches the braking position, and
a stop member that an abutment surface of the braking element is received against in the braking position, engagement between the stop member and the abutment surface preventing movement of the braking element and the moveable part beyond the braking position.
29. The device of claim 28, wherein the braking element engages the projection in the braking position.
30. The device of claim 28, wherein the passenger conveyor comprises an escalator or a moving walkway.
31. The device of claim 28, wherein the moveable part comprises a sprocket and the projection moves along an arcuate path as the moveable part moves, the braking element engaging a surface of the projection such that the braking element provides a braking force in a direction that is generally tangential to the arcuate path.
32. The device of claim 28, wherein the braking element comprises a shaft having one end configured to engage the moveable part.
33. The device of claim 32, wherein the first direction is aligned with a longitudinal axis of the shaft and the second direction is transverse to the first direction.
34. The device of claim 33, wherein the braking element moves linearly in the first direction and the braking element pivotally moves in the second direction.
35. The device of claim 34, wherein the braking element pivotally moves in the second direction about a pivot axis that is parallel with an axis of rotation of the moveable element.
36. The device of claim 33, wherein an angle between a first orientation of a longitudinal axis of the shaft in the engagement position and a second orientation of the longitudinal axis of the shaft in the braking position is between 10 degrees and 45 degrees.
37. The device of claim 36, wherein the angle is approximately 25 degrees.
38. The device of claim 28, comprising a support member supporting the braking element to allow movement in the second direction, the support member being moveable in the first direction between an inactivated position in which the braking element is out of engagement with the moveable part and an activated position in which the braking element engages the moveable part.
39. The device of claim 28, comprising a biasing member that biases the braking element toward an inactivated position in which the braking element is out of engagement with the moveable part.
40. The device of claim 28, wherein the stop member comprises a wedge shaped portion defining an abutment surface against which the abutment surface of the braking element abuts in the braking position.
41. The device of claim 40, wherein the abutment surface is defined on a surface of the wedge shaped portion tapering toward the moveable part with respect to the second direction.
42. The device of claim 41, wherein the abutment surface is inclined with respect to the second direction at an angle between 1 degree and 20 degrees.
43. The device of claim 28, wherein the stop member is moveable with the braking element in a direction toward or away from the moveable part.
44. The device of claim 28, comprising an electrically powered actuator that selectively moves the braking element in the first direction into engagement with the moveable part.