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Since my last post, I have had to put ML research on hold due to RL priorities and lack of C knowledge.
Is anyone here still working on the 5Dc port?

Exposure Adjust is just a "quick preview" of how the image could be after being edited in post, it does nothing to the file on the card, just change exposure on the image on screen.

It seems there is a display bug associated with this function. I'll look in the forum if it has already been reported.

I think there are 2 reasons :
1) to check if the new Iso value gives the expected shutter speed.
2) because except if you lock exposure, the ISO will have to adapt each time you change the exposure.

I'm happy to see someone else struggling with the ML_AUTO_ISO code. 

Regarding the the calculation of aperture and shutter values, you might take a look at lens.c and lens.h files. There are tables and formulas to convert between real world values and raw values.

You're analysis is correct, ML doesn't force speed or shutter, it just compares the values calculated by the camera and compares it to the values you have set in your ML menu. If it doesn't fit, it applies a correction to the Iso, and does the test again until the speed or aperture is OK.

and work seems to have stopped on this project for a while.

Works is still in progress. http://www.magiclantern.fm/forum/index.php?topic=4415.0
I only have a hard time learning C language... 

Regarding Chewe's issue, I have no idea. Does your camera work OK when ML is not installed ?

tried it right now but don't works, nothing is shown since screen is off

Yes, that's a big issue on the 5Dc.
I have tried to enable the console log to compensate but without any success.

the values are necessarily calculated and stored somewhere in the memory. Aren't they ?
If not, how would the camera work in Av and Tv modes ?
I don't have the coding knowledge to go further now. If I'm alone on this one, it might take very long.
I'm surprised there is no other 5Dc owner interested.

HELP!

I can't do it alone.
I need to know where the values lens_info.raw_aperture and lens_info.raw_shutter are defined.

Well, I have gone further in my investigation.

Here is the issue that I have isolated :
the variants lens_info.raw_aperture and lens_info.raw_shutter are not updated correctly.

   
• lens_info.raw_aperture : this one is updated only in Av mode. It doesn't seem to get the aperture value that is computed by the camera in Tv mode.
• lens_info.raw_shutter : this one is updated only in Tv mode. It doesn't seem to get the shutter value that is computed by the camera in Av mode.

I will dig further, but I'm not sure I can do much with my poor C knowledge.
If someone can help me...

No one can help me ?

a1ex, I need your help.
http://www.magiclantern.fm/forum/index.php?topic=4051.msg24677#new

auto_iso_tweak_step() is getting called for sure. When I put a Led test, the LED blinks all the time, even when the shutter is not half-pressed. Is that normal ?

When I try to use the feature in Av mode, it raises the ISO to the upper limit (1600) whatever the shutter speed is. So i guess there is an issue somewhere in the tests. However, I can't find if it come from an error in the comparison between set shutter speed and camera's speed, or if it is the ramping values that are too steep.

In Tv mode, it doesn't seem to do anything, and moreover, when I go back from Tv mode to Av mode, Av mode seems dead too. I need to switch the camera off and then back on to have Av mode raise the iso to 1600 again.

I wonder, is there a way to display debug values from the variants used during the tests ?

I activated all the features from the Expo menu. Some works, others don't :
Works : EXPO_APERTURE / EXPO_SHUTTER / EXPO_ISO
Don't : WHITE_BALANCE / EXPO_ISO_HTP / EXPO_ISO_DIGIC / INTERMEDIATE_ISO_PHOTO_DISPLAY / ML_AUTO_ISO
For EXPO_LOCK and EXPO_PRESET, I'm not sure. I need to test deeper.

OK, I have activated the Auto ISO feature for the 5Dc. The menu works, but the feature doesn't work properly. I have some ideas. I will experiment and let you know the result.

I think the advanced settings are in the same page as the saturation setting. I don't have the camera in front of me.

Have you tried to change the UniWB value in the advanced settings ?

I have installed your fork on my 5Dc today. I have noticed some issues. I'll post them later today.

The issues I have seen are not critical but annoying.
First one is the following :
When I review my pictures, if I press on "Set" to modify the exposure, the blue led turns on.
If I press "Set" again, it turns off. Till now, everything is normal.
But if I try to do anything else (quitting the review mode by pressing the play button, half pressing the shutter button, hitting the menu button...), the camera quits the review mode, but the LED keeps shinning. To turn it off, the only way is to go back in review mode and to press the "Set" button 2 times. I don't think this is normal.

I have installed your fork on my 5Dc today. I have noticed some issues. I'll post them later today.

Compiling is OK now, but hacking...

all except 5Dc maybe, or I have missed something ?

Did you try ML auto ISO?

On which camera?

In this case exposure compensation will not work because auto iso will compensate it

I don't follow you on this one.
in Av mode, with fixed ISO, shutter speed is set depending on the exposure correction. If speed is too low, Auto ISO would change the ISO 1 step up, check associated speed to have the selected exposure. If speed is still too low, ISO raises 1 more step,...etc

Why wouldn't exposure correction work ?

OK. I thought there would be an option to set the exposure correction, as on Av and Tv modes.
Maybe an additional functionnality to add with Auto ISO. Don't you think?

There were many backend changes (e.g. the separation of features with ifdef's) which were not tested at all on 5Dc afaik. So just try every single thingie and see what still works and what not.

OK. No risk to brick my camera?