That doesn't seem right? I'll go investigate this for you in the morning.
Maybe I'm mistaken as to what you mean.. But I'll check it out.
I'd be delighted if more people recognize this problem. My settings:
- manual exposure. Spot meter pattern exacerbates the problem. 46 years' experience has taught me that manual exposure is most reliable for me
- adapted lens i.e., Leica R or Canon FD, anything that the camera doesn't control the aperture
- auto review off
- exposure preview on
Pick a subject with a bright background like this one:
The bird is in constant motion, shifting its weight from one foot to the other, turning to face a Red-tailed Hawk that's trying to drive the eagle away, preening, pooping, stretching. The DOF is an inch or two at most so I re-focus every time the bird moves. I want to be sure there's tonal separation between the bird's head and the sky; the light can change subtly from one moment to the next depending the thickness of the cloud(s) in front of the sun so I monitor the exposure constantly.
If the metering spot is on the bird's dark plumage the automatic viewfinder brightness function will make the bird too bright and I can't tell if there's separation between the bird's crown and the sky. If the metering spot is on the sky the the automatic viewfinder brightness function makes the bird black and I can't tell if I have sufficient exposure in the dark plumage. Remember, the bird is constantly moving, it may shift to the left or right at any moment so the metering spot may be on the bird or on the sky, the clouds are moving so the correct exposure can change from one second to the next. The effect is lessened by averaging or matrix metering but it's still there to an annoying degree. I do not want to be reviewing the previous exposure or holding the shutter release just so or pushing the Fn button when the eagle does this:
This is an extreme scenario but it's not far from the ones I encounter almost every day. Most birds move more frequently than an eagle, and when they do it's not always in front of a uniformly bright or dark background, so the background is changing too.
This is really simple with the a7II: Setting effect ON. I would like this option in the SL's next firmware revision.