I am not sure how to control the shutter or why it switches when going from std to crop.
The fps i set with FPS Override to:
Desired FPS to 24
Optimize for Exact FPS
then go to the advanced tab
Timer A and/or B adjust to match FPS=29.976
Now when you switch between 5X and normal mode I dont have any changes if FPS.
also more info here:
How to record: -- RAW Digital Cropped Video on 5D3 --
http://www.magiclantern.fm/forum/index.php?topic=5441.0
Specially check the latest post on how to record on the center of the lens!
I've been following your posts there, thank you for doing that.
The new force left, close to center crop is great. That's what I'm doing now (5 to the right, 3 up) as it's the most practical use by far for crop mode imo. Regarding the FPS override settings, did you mean to say 24 fps instead of 29.976 fps?
When I set FPS override to exactly 24.000 when in crop mode, it switches to 24.006 when in normal mode. Alex has already written that 24.000 is currently not possible on the 5d3 in normal mode. Apparently 24.000 works on some other models but for some reason not the 5d3. I prefer 23.976 anyway to be able to stay consistent when mixing footage from other cameras which typically are shot using 23.976.
If you set fps override to 23.976 when in normal mode, switching to crop mode switches the fps to either 20.848 or 24.003 (depending on it's mood that moment). Now there may be a combination of fps override settings that I have not hit upon yet via my own testing which maintains 23.976, so if anyone can figure that out please let me know.
The following is the only way I have been able to maintain 23.976 when switching crop modes...
1. When in normal mode, do not use the override feature so it defaults to 23.976 (shutter at 1/47)
2. When switching to crop mode...
- turn on fps override
- set desired fps to 24
- set timer A to 500
- set timer B to 2002
- actual fps now shows 23.976
- change shutter to 1/49
3. When switching back to normal (non-crop) mode....
- turn OFF fps override (otherwise, fps will automatically change to 23.980)
- change shutter to 1/47 (since it has changed to 1/78 for some reason)
4. Now shoot.
5. Rinse and repeat every time you switch modes.
Another oddity is when you do have fps override set properly to 23.976 when in crop mode, if you toggle back to normal then crop mode, it sometime switches to 21.080. Toggling to normal then crop again, will switch it back to 23.976 however.
As you can see, punching in and out requires a constant awareness of the above steps and oddities to maintain consistent settings. I've shot for 2 complete days with approx 100 clips each day, and although I know how to do the above steps to maintain my fps and shutter, each day I always ended up with a number of clips where off, the worst being when I end up with 21.xxx fps. I do realize that Alex implemented fps override to solve different problems, so I'm not surprised about the behavior... thus my feature request.
