The obvious question is: can you think how to show how much Ev you are over or under, especially over, ie for ETTR adjustments.
If that is possible, could you imagine providing this feedback via the Lua API?
At the moment I am not sure how this would work.
I don’t know how a1ex over in magic lantern world did it, but I know he did, ie the RAW LV histogram gives over and under Ev hints: https://www.magiclantern.fm/forum/index.php?topic=12096.0
The sampling area is centered in the sensor active area. Some camera have severe barrel distortion at the wide end so setting the sample area to 100 may throw off the under exposure calculation because of the corner vignetting.
At the moment I am not sure how this would work. Once a pixel saturates on the sensor it will be read out at the white level of the sensor regardless of how much more light hit it. So there is no way to know how over exposed any part of the image is.
My understanding is that the ML hint is for an image that is not over exposed, and gives an indication how much more you can increase the exposure by before it starts to clip. This is probably doable.
Started by pigeonhill General Discussion and Assistance
Started by pigeonhill General Help and Assistance on using CHDK stable releases