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garry23, thanks for your tips, I will try to improve my results with these suggestions. My 'normal' RAW pictures are pretty good with AETTR, but I have already experienced some limits of dual iso, e.g. chroma noise on pictures with water etc., and the pictures I take in dark areas are still really bad with lots of noise, and sometimes blurred. It will take me some more experiments to figure out how to get this right.

Long time ago, but... thanks for the suggestions.

I didn't have a problem with not using the correct RAW software nor understanding RAW. It was simply that the settings I chose for taking pictures were too demanding for my equipment, producing the noisy results. No software can help with that though GIMP with the GMIC plugins did a hell of a job at that when I think about it. BTW: The software that came with my camera and runs in Windows sucks, compared to the alternatives.

For linux, I have started working with RAW using these two applications:

1) RawTherapee: I found this to be a bit more intuitive to use first. Although it claims to have good support especially for ML, the default settings it chooses seem to be a contradiction to these claims. But I do like the workflow and user interface a bit more than that of Darktable.

2) Darktable: This opens the DNG files with proper parameters. If I only want to open the files and export them to JPG, without applying many other tweaks, then this is what I use now.

So far, both apps do not have native support for Dual-ISO yet. Maybe someone writes a plugin etc. in the future.

Hi,

I'm completely new to RAW photo shooting. The RAW pictures I took with my EOS 550D are rather noisy. I realized that I have to post-process RAW images on my own, using RAW editing software. Have I understood it right that noise reduction is usually done by the camera, but for RAW images I have to do it manually? If so, how are other people doing this?

Here is what I want to achieve:
* Take photos in RAW mode (mainly to be able to use advanced features like aettr and dual_iso)
* Post-process (preferably automatically) via script or using graphical tools like RawTherapee (or any other Linux software if someone can recommend one)
* Save the results as regular JPEG (I don't want or need to keep the RAW images around, except perhaps for some particular photos). Image dimensions can be appropriately the same as regular JPEGs written by the camera, or any other of those standard sizes.

My primary concern is the noise, though; I wonder, did I do something wrong regarding the way I shot these pictures?

It's a locale problem (for sure you're not in English in your linux box). It's explained in another thread (I suffered this also first time) easy to solve. I'm not at home, and searching by Tapatalk is mad... But try to search, and if not, I'll do when arriving home

Thank you for that hint! I did not find anything using search, but simply tried

Code Select Expand

LC_ALL=C cr2hdr <image.cr2>

and now it worked! Rather easy if you know what's the problem...

Now I'll have to find out how to best handle the resulting files; RawTherapee seems to open it nicely.

Not sure if this is the right place to ask, but since cr2hdr belongs to the dual_iso module and I found this thread later, maybe I try and ask if someone can help me with my problem describe here?

http://www.magiclantern.fm/forum/index.php?topic=13548.0

Hi,

I utterly fail to compile the magic lantern tools cr2hdr on linux. Well, actually compiling works but the resulting executable seems unable to detect the raw image files correctly.

Thinks I've done so far (this is a gentoo linux system):

1) hg clone -r unified https://bitbucket.org/hudson/magic-lantern
2) Downloaded gcc-arm-none-eabi-4_7-2013q3-20130916-linux.tar.bz2, unpacked and configured Makefile.user.default to use the gcc path.
3) Compiled magic lantern nightly build. make reports everything's ok.
4) Compiled modules/dual_iso/cr2hdr by running make in that directory, moved executable to /usr/local/bin
5) Compiled modules/raw_rec/raw2dng by running make in that directory, moved executable to /usr/local/bin (not sure if this executable is actually needed)

But now when I try to run cr2hdr on a cr2 file, I get this:

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cr2hdr IMG_4985.CR2
cr2hdr: a post processing tool for Dual ISO images

Last update: f381b87 on 2014-07-06 09:46:41 UTC by phil:
Fix output (-o) filename value passed to Adobe DNG Converter wh...

Active options:
--amaze-edge    : use a temporary demosaic step (AMaZE) followed by edge-directed interpolation (default)
--cs2x2         : apply 2x2 chroma smoothing in noisy and aliased areas (default)

Input file      : IMG_4985.CR2
Camera          : Canon EOS 550D
Full size       : 0 x 0
Active area     : 0 x 0
Error: pgm width


I've also tried - as an ugly workaround - to run the windows version in wine (downloaded elsewhere), but even that did not work; It detected the image size correctly, started working but later bailed out on some perl module error.

Please help!