Author Topic: Auto ETTR based on RAW histogram (  (Read 83233 times)


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Re: Auto ETTR based on RAW histogram (
« Reply #175 on: August 01, 2017, 12:40:54 AM »
I have some problem, when I using ETTR with 1/2 stop for shooting timelapse and postprocess it with LRTimelapse. LRTimelapse can work only with step 1/3 stop. Can I change some settings ETTR for change step from 1/2 to 1/3?

You'll have to change the code, and it's not trivial. You'll need to disallow 1/2-stop exposures and account for the rounding used in 1/3-stop mode (actually 3/8 and 5/8).

To my knowledge, LRTimelapse is a commercial program, so you might have better luck with feature requests there.

That said, we have our own deflickering tools that do not use the EXIF info at all. Some examples:
- Deflicker module (original version, not very practical, as deflickering is best done in post)
- Bridge script (similar algorithm, but requires proprietary software)
- mlvfs --deflicker and mlv_dump --deflicker (for MLV timelapse, e.g. silent pics or raw video)

The same deflickering algorithm is available in Darktable.