Exposure cause lens length dependent brightness

[Micha]

Hi,

today I'm working on some product shots and some times I need wide angle and some time tele lenses. I wonder, that my rendering was to bright or to dark and I found, that the exposure option enable this ugly side effect of jumping brightness. Please allow to avoid this side effect, it's quite difficult to get the right exposure over different views.

-Micha

[Peter.Chaushev]

This is expected behavior. Please see https://docs.chaosgroup.com/display/...dFocusDistance for further info.

Kind regards,
Peter

[Micha]

Hi Peter,

I understand, it's an interesting side effect of real world cameras, not really missed for the daily work.

I run in the situation because I need to enable exposure to use the white balance. At VfR2 I was able to disable Exposure and all other parameters was working like before. So, I never used the Exposure option. I did some tests at VfR Next and found, the auto white balance works also if exposure is disabled. So, I suppose so it's a little UI bug only and the manual set white balance could work too. If this is be fixed, than I could work without an enabled exposure like in the years before. I hope it's no problem to enable the manual white balance independent from the exposure option.

Best-
Micha

[Jonish]

This is expected behavior. Please see https://docs.chaosgroup.com/display/...dFocusDistance for further info.

Kind regards,
Peter

Hi Peter, this one I still don't understand. I find the photo example completely misleading - if you're trying to explain behavior of automatic exposure, you're showing two shots with completely different content, mainly if the DSLR is set to prioritize content in the center, ie. one photo has a drawing in the center and compensates to brighter colours and the other photo has only the whiteboard in the center and chooses shorter exposure and darker colours (e.g. problem with taking photos of a snowy landscape). You mention changing the focus distance but in reality focal length is changed and with it also the focus distance.

I would really love some more accurate explanation in the documentation because I feel like we fail in reaching a mutual undestanding.

Thank you

Jonas