Author Topic: mlv_dump on steroids  (Read 8213 times)

Danne

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Re: mlv_dump on steroids
« Reply #100 on: July 05, 2017, 10:09:05 AM »
That's a nice idea but it would prolong every clip with around two seconds. Also note that recording a darkframe for every clip isn't needed so then maybe it would be useful as a menu option.

Another idea I have is to build a lua script which would record a short darkframe sample of each iso on any specific cam and then the user could use these files in a dark frame storage. Let's say one loads the script and then it ends when all files are recorded instead of manually having to do this.

Ilia3101

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Re: mlv_dump on steroids
« Reply #101 on: July 05, 2017, 10:18:03 AM »
Yeah, it would be nice as a menu option. A script is a good idea, but I think noise pattern might be different at different shutter speeds, probably a good approximation though. Does anyone else think it's worth adding this as an option?
5D2

bouncyball

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Re: mlv_dump on steroids
« Reply #102 on: July 05, 2017, 10:44:10 AM »
I don't think that electronic rolling shutter can be turned off and sensor still be scanned and data read out still be functional. Otherwise we'd be able to use whole sensor as optical black area. Am I wrong?

If mechanical shutter could be closed in live view that would be another story.

g3gg0

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Re: mlv_dump on steroids
« Reply #103 on: July 05, 2017, 01:47:31 PM »
alex and i already discussed that stuff while ago.
main problem is, we maybe could make a 0-exposue readout. this is a BIAS frame iirc.
a DARK frame involves the correct exposure time and ISO (or at least correct exposure and a fitting BIAS frame for the ISO etc)

we could somewhen also move the mirror/shutter down and then expose for a DARK frame,
but currently we do not know how to achieve this.
this is most likely controlled in the MPU which we didnt reverse engineer yet.

bouncyball

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Re: mlv_dump on steroids
« Reply #104 on: Yesterday at 07:27:18 PM »
Hi guys!

Some more updates on the 1st post, download link is the same.

regards
bb

Danne

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Re: mlv_dump on steroids
« Reply #105 on: Yesterday at 10:46:25 PM »
The power of "c". Great work B.

Running time command comparing creation time building the first croprec focus pixel file for eosm:
fmputil
real   0m0.021s
user   0m0.012s
sys   0m0.005s

fpm.sh
real   0m4.717s
user   0m10.848s
sys   0m2.304s