Dual ISO - massive dynamic range improvement (dual_iso.mo)

[a1ex]

Try this one: www.magiclantern.fm/forum/index.php?topic=8850

[riclim]

Hello everyone, i want to ask, why my Canon 1100D using Magic Lantern latest nightly build Dual ISO shoot will like this? It look many line

[ted ramasola]

Hello everyone, i want to ask, why my Canon 1100D using Magic Lantern latest nightly build Dual ISO shoot will like this? It look many line

Read the white paper first on dual iso before you use this and ask questions. It on the first post.

heres the white paper on it. https://bitbucket.org/hudson/magic-lantern/downloads/dual_iso.pdf

[riclim]

Read the white paper first on dual iso before you use this and ask questions. It on the first post.

heres the white paper on it. https://bitbucket.org/hudson/magic-lantern/downloads/dual_iso.pdf

Ok, thanks, i will read soon.

[riclim]

Read the white paper first on dual iso before you use this and ask questions. It on the first post.

heres the white paper on it. https://bitbucket.org/hudson/magic-lantern/downloads/dual_iso.pdf

Hi friend, i read it  already, i saw that "3 ADTG/CMOS register tweaking", but it showing explain some code, i can't understand, i'm still confuse of it.

And i read many page of this topic too, i found some people is after shooting Dual ISO as CR2 photo, then drag the file to "cr2hdr.exe" then will be convert to DNG file with dual ISO combie.

Dual ISO is only success with this cr2hdr.exe software or got any solution can direct perfect shoot in the camera?

Hope someone can let me know the clearly answer, thanks 

[Audionut]

Postprocessing

- For CR2 files: cr2hdr.c (Windows:cr2hdr.exe). It requires dcraw and (optional) exiftool in your executable path (they are in the zip). Drag and drop the CR2 files over cr2hdr.exe.

Update by RenatoPhoto:
For Mac download:
Mac GUI for cr2hdr: https://bitbucket.org/a_d_/magic-lantern/downloads/OSX_cr2hdr_app.zip
dcraw and exif tool: https://bitbucket.org/a_d_/magic-lantern/downloads/OSX_cr2hdr.zip
Rename cr2 to capitals CR2 using: http://namechanger.en.softonic.com/mac
Also, once you've renamed them to .CR2, the newest CR2HDR allows you to drag and drop the entire folder to the icon.
---------------------
For automatic script using Multiple Instances of cr2hdr see the excellent:
http://www.magiclantern.fm/forum/index.php?topic=8520.0

- For RAW video files: latest raw2dng.exe. extract the DNGs with any method you like (e.g. raw2dng), then drag the DNG files over cr2hdr.exe

- To get a natural HDR look: try my automatic color grading script.

Also, please don't create duplicate posts in the forum.

[riclim]

Also, please don't create duplicate posts in the forum.

ok, thanks and sorry for the duplicate posts.

For this DualISO shooting, it is only the way using the CR2 file convert to DNG file using "cr2hdr.exe"? No other way, right?

[Audionut]

What's the matter with cr2hdr?

[riclim]

What's the matter with cr2hdr?

Maybe i misunderstanding of the Dual ISO function, i think it is direct adjust and shoot will get effect view in camera.
But i shoot every Dual ISO photo will get whole line texture picture like the photo i share.

Now i understand the Dual ISO function photo after shoot the CR2 file then need using computer cr2hdr.exe convert to DNG file only get the perfect Dual ISO image.

[Audionut]

Every Dual ISO photo will have line texture.  Yes.

Because it captures extra dynamic range in this way.

Process with cr2hdr.  Gives DNG.  This DNG looks like Normal Shot.  But this DNG has much less noise.

Raise exposure/shadows in post process.

[riclim]

Friend, thank you so much, now i 100% understand of the function already. 

After shoot the CR2 with dual ISO, then use cr2hdr.exe make the DNG file, it can open in photoshop like RAW file, it will less noise and it can adjust recovery/shadow until a perfect HDR photo, awesome !!!
 

Nice works, thanks again 

[albert-e]

I'm using Nightly Build Feb-2014-02-18. Question: Does Dual ISO works on 60D?

Thanks.

[Audionut]

http://nanomad.magiclantern.fm/jenkins/features.html

Why such an old build?

[arturochu]

Try this one: www.magiclantern.fm/forum/index.php?topic=8850

I don't have bridge  bummer, i'll have to wait for a cr2hdr fix

[albert-e]

http://nanomad.magiclantern.fm/jenkins/features.html

Why such an old build?

Thanks Audionut, that matrix helps me to understand the features on Nightly Build. Are they updated in cases where new features for a camera?
I'll try and download/test the latest build.

Thanks again>

[a1ex]

Does anyone think we are so crazy to check all that stuff manually?

[albert-e]

I meant to say "Are they updated in cases where there is new or added ML feature or functionality?". I'm just saying....

[a1ex]

They are generated by the build script (it greps the source code and checks what it finds enabled where).

[l_d_allan]

http://nanomad.magiclantern.fm/jenkins/features.html

This features. html was built on Jan 21, 2014. Has there been an update since then that would indicate what works or not with the 6d?

[a1ex]

Hit F5, it was a broken redirect. You should get redirected here: http://builds.magiclantern.fm/#/features

[Marsu42]

Friend, thank you so much, now i 100% understand of the function already. 

Not quite - dual_iso has some drawbacks, you're not getting something for nothing: There is reduced resolution on both sides of the histogram, so if one side matters more to you you'd probably better off with a normal cr2 and accept noisier shadows . Plus dual_iso has the whole cr2hdr postprocessing overhead and wb in acr is currently broken.

[Oswald]

I have eos m. Dual iso work properly on video but how I take picture with dual iso? I'm noob.

Edit: now i got it.

[l_d_allan]

Hit F5, it was a broken redirect. You should get redirected here: http://builds.magiclantern.fm/#/features

Thanks.

I did notice there were two columns for 700d. I infer one of those should be 70d? (the blank column?)

[a1ex]

Ah, the script got confused by upgrading 700D 111->113.

[Toffifee]

cr2hdr is a single core program right?
On my macbook it stays around 97-99% consistently.

How hard would it be to make it multi-threaded so that it could utilise all cores? maybe the windows version is multi-threaded?