Messages

Lock ISO & AV implemented, bugs fixed, look above.
Please test and port it!

Where is a1lex from?

i will not be notified if you send me a answer

here http://www.magiclantern.fm/forum/index.php?topic=7208.0

Next release.  This can be usable for shooting.

no its still buggy, I did only cosmetics changes

Delete your module conf and download it now.
I have already test it, and it overexposures on bright scenes.

Yes, this finding allows set all exposure setting dynamically.
I added minimum shutter option.
I don't know how to test it on other cameras without having it physically, send me you camera and I will implement it .
For first release look above.

It works even if you unplug you lens (on 5D2)! Look at screen shot.
For better finding, here is what values it can acquire. (int16_t)

Yes...

revert them please

Yes, luminance level of the scene. This is planned for shooting.

I already computed the bv val, and it works nicely with about +/- 0,5 EV tolerance, it depends of c. fn I exposure increment settings.

Code Select Expand

int bv = APEX_AV(lens_info.raw_aperture) + APEX_TV(lens_info.raw_shutter) - APEX_SV(lens_info.iso_equiv_raw) + (EXPO_COMP / 256);

Thanks for docs, but understanding apex is not too hard, I want to do some "blending" between shutter and iso. I need some hint. Maybe I can create some public excel doc, where will be the equation.

Btw: expo_comp int works in all modes not only M

[Instructions]

I discover how to get brightness value so I implement new automatic exposure algorithm based on predefined curves.
It's like a real 'P' where you actually program what you want the camera to do depending on the light.





Instructions
Autoexpo is based on APEX system
Tv minimum
sets the minimum shutter value
Av range
sets aperture range, if it not match with current lens, it doesn't matter, it will be compensated with shutter
Av curve
by main dial you set point where will start aperture decreasing (in BV value)
speed dial sets how much will be aperture decreased, it sets the slope (minus EV per one BV)
ISO range
100 - 25600 make sure that you set correct ISO range (you can set this values via Canon ISO menu), otherwise you can get incorrect exposure. It also solves the 5D2 auto ISO bug, where is ISO hardcored to 400.
ISO curve
by main dial you set point where will start ISO increasing (in BV value)
speed dial sets how much will be ISO increased, it sets the slope (plus EV per one BV)
Graph
on the X axis is light (Brightness Value)
on Y is shutter (Time Value), aperture (Aperture Value), ISO (Speed Value) and EC (Exposure Compensation)
on the left you have bright scenes on the right dark
here is a few BV values you can get:
16   light sand or snow
16 - 13   daylight
13 - 8   cloudy, shade
8 - 1   Indoor
> 1   low light
-12   complete darkness
full list
graph shows what combinations will be used depending on light conditions (on BV)
last BV value of current scene is marked with the cyan line
shutter value is computed dynamically as BV - AV + SV - EC


Download Source  Buy me a beer 


Porting to other cameras
http://www.magiclantern.fm/forum/index.php?topic=7208.msg62915#msg62915
http://www.magiclantern.fm/forum/index.php?topic=7208.msg66952#msg66952

I try get exposure compensation (lens_info.ae) in M mode, that show over/under exposure but lens_info.ae is always zero.
Some suggestons?

by dissasabling ROM1 by IDA i found some subroutine, that may be essential, or not?

Code Select Expand


ADR     R0, aOutputAeRawDat ; "Output AE RAW Data = %1d\n"
BL      sub_10C08


I want to implement auto iso feature for years, but there is no ae_value for 5D2 or 3.

There is small picture how auto iso should work
http://bitbucket.org/pravdomil/ml/downloads/autoiso.png

I hope that somebody will the right code for 5Ds.

yes playback is mostly corrupted, but using playback command in RAW menu immediately after rec works nice

fast preview is for playback

next release, works with latest a_d_ build, download here
https://bitbucket.org/pravdomil/magic-lantern-hack/downloads/raw_rec.mo

some new features, look here
https://bitbucket.org/pravdomil/magic-lantern-hack/commits/all

Source code please.

FYI: playback can be done realtime without skipping anything.

well I add fps measurement to playback and I got only 8fps with 5D2 1880x800 at 25p, no fast preview, no frame skip, Lexmark 64GB 1000x.

source
https://bitbucket.org/a_d_/magic-lantern-hack
works with latest a_d_ build, download from the begining of this forum
saving conf works too

Continue here
http://www.magiclantern.fm/forum/index.php?topic=5533.0

Next release!

Playback frame skiping! Fast preview. Dynamic interface coordinates. Mask box updated to recording frame, now with no flicker. Restored frame skipping. Some module credits.

https://bitbucket.org/pravdomil/raw_rec.mo/downloads/raw_rec.mo

yes, I will do it tomorrow evening.
Could you merge it to official trunk?

next update, look above

I got with Lexar 1000x 64GB ~64MB/s.
AF button works normally with AEWB disable.