My eyes! The AE-Lock does nothing!
Does anyone know of a way to keep the shutter speed from creeping during a zoom?
With the EF 70-200 f/4 IS, in movie mode (not exp. sim.), I can mess with the brightness and hope the camera will hit upon the values I want by accident (1/60, f/4, ISO 1600, in one example), then I "lock" the exposure and begin recording. If I zoom during the shot, the shutter speed will get faster to match the focal length (1/60 at 70mm to 1/125 at 135mm, for example), and it increases the ISO to match. It changes those values despite (maybe out of spite?) the AE lock and running tally lamp. Does everyone (anyone?) else experience the same problem? Is there any workaround? Thanks in advance. |
I haven't tried what you're referring to (I no longer like zooming during a take), but what you say has been discussed here previously. It's a problem (or "feature" if you like) with this camera in it current incarnation. I don't think there is a solution, but hopefully I'm wrong.
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Unfortunately for Canon, the solution is to use an adapter and Nikon manual lenses - or to unlock your lens and rotate it two or three mm.
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Thanks, guys. |
I thought after locked (exposure), it stays locked in. Isn't that so?
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some zoom lenses will change the aperature if you zoom them while shooting video....
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My experience with the exposure lock option on a few other video cameras is that the exposure will remained locked, unless you fully zoom in while shooting and the camcorder can't maintain the locked combination of gain, aperture and shutter. Then it does the best that it can.
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Other than that, I'm not aware of anything else that changes during exposure lock. Quote:
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