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I have the same problem here. It happened twice since I started using ML this week. I have a really big concern about this issue, no battery = no camera

I'll try the "wait to remove card" thing, to check if it happens again.

I've got this problem again, even waiting to remove card (after red light blinks, after sensor cleaning). Battery was full, but at the morning, battery was empty.

Is there any I can help to investigate this issue?

Sairon, seems like your battery drain is similar to what is happening here
In case you missed it (I missed it too the first time reading), read this:
http://www.magiclantern.fm/forum/index.php?topic=1455

I've noticed this problem too. My question is: is it bad to leave your camera "on" and let it time out (i have mine set to time out after 30 seconds or a minute or something short) or is it better to turn off, then wait a couple seconds, open the door, wait some more, THEN remove the card?

I have the same problem here. It happened twice since I started using ML this week. I have a really big concern about this issue, no battery = no camera

I'll try the "wait to remove card" thing, to check if it happens again.

Hm, the banding from ISO 100 looks familiar. Can you check whether it repeats every 8 pixels? If yes, I may have a fix.

For sharpness, it matters a lot whether the tested area was covered by both ISOs (where you get full resolution) or only one (where you get half resolution and possible aliasing and moire).

Can you upload the CR2 files?

Here are the CR2 files:
https://www.dropbox.com/sh/66pp28wpxtsrdv0/uQbrLi7cVE

You may check IMG_0021.CR2 for Vertical Banding.

And yes, the vertical banding repeats every 8 bits.

[The shots:]

New tests, these are to compare quality.

Canon 7D
Canon 10-22 @10mm
f/8
30"
Highlights/shadows and some stuff processed in LR 5

The shots:
ISO 100


ISO 160


ISO 100/1600


ISO 160/1600


Vertical Banding
ISO 100


ISO 160


ISO 100/1600


ISO 160/1600


For the next comparisons I picked the best quality to compare
Sharpness
ISO 160


ISO 100/1600


Color Noise
ISO 160


ISO 100/1600


My thoughts about it:
1 - Without Dual ISO, ISO 160 has less vertical banding than ISO 100. But with Dual ISO I get no vertical banding at all, on both ISOs, that's good.
2 - Sharpness and color noise was way better without Dual ISO.

If you have some tip to improve my shots, I'd be glad if you share it : )

You get banding with dual ISO? Can you upload a sample?

I'll test it tonight and upload the tests. I'll test ISO 160, ISO 100, Non-Dual ISO and Dual ISO.

Some tips:
- 160 is just 200 darkened
- on 7D you don't gain anything above 1600 => try 100/800 or 100/1600, but not more
- UniWB no longer makes sense, because you have raw zebras and histogram

Good tips.

I know ISO 160 is just 200 darkened, I used 160 because of the known vertical banding issue on 7D, while extreme recovering the shadows. It's weird, but you get less vertical banding on 160 rather than on 100 or 200, I don't know why, it just works for me.

I'll still try raw zebras and histogram, Dual ISO was my first ML test EVER : )

My first test:

ISO 160/3200
Canon 7D
Canon 10-22 @10mm
f/8
1/320
ETTR + UniWB
Processed in LR 5



100% Crop


I'm going to make more shots in the next days.

Works nice, with Dual ISO module. Thanks!!

Nice samples. Did you use 5dmIII or 7D?

Audionut uploaded a build with Dual Iso module here: http://www.magiclantern.fm/forum/index.php?topic=7139.msg61623#msg61623

You can try if you're brave (he didn't test).

You know, if you compile ML for 7D and post it here, I bet some lunatic here has the balls to run it in their camera. Then we can take it from there...

Ok, I'll do it ASAP and see what happens.

But any one have compile this Dual iso for the 7D ?

I want to trie but dont know how to compile.

I know how to compile, but I'm not brave enough to try my own build 

Any build with the Dual ISO module coming soon?