Major release: RawTherapee 4.1 is out with HDR DNG support

[Tejpor]

To the current fans and potential future users: the open source RAW developer RawTherapee 4.1 is out. (There is a thread about it here, which focuses on support for medium format cameras in RT: http://www.luminous-landscape.com/forum/index.php?topic=90105.0)

One of the new exciting features include the support for high-dynamic-range DNG files. This means that RT can now read DNGs with 32 bit per channel data - essentially the format of HDR images. Then you can use the floating-point-precision tools in RT (curves, etc) to tone-map or otherwise treat the files. Another selling point is that the demosaicing algorithms still can be changed freely, flatfield correction still works, etc.

A caveat: you do not import 2 or more RAW files to create a HDR image or a DNG file in RawTherapee! You have to use a different tool for merging the RAWs into a single HDR DNG file. You can then use RT to open the DNG RAW file as if it has been made as a single exposure.

Detailed info on the HDR DNG support and what it means for e.g. "noiseless" images: http://rawtherapee.com/forum/viewtopic.php?f=1&t=5426

Overview of the 4.1 release: http://rawtherapee.com/blog/rawtherapee-4.1-is-out

Download: http://rawtherapee.com/downloads

[kirkt]

Trying to open a DNG Float on my machine (Mavericks - OS X 10.9) crashes the application.  The update thread to which you pointed notes that the 10.7 compilation (v4.1) should work in OS X 10.8 and 10.9 as well.

Oh well.  It would be nice to be able to open a DNG Float directly and tone it in a toolset like RT.

thanks for the heads up!

kirk

[EduPerez]

Both HDRMerge and HDR-DNG support in RawTherapee seem to be working flawlessly in my system (Fedora 19 - 64bit); I have just been experimenting a bit, with some long exposures I had lying around, and the results are very nice.

[Tejpor]

Trying to open a DNG Float on my machine (Mavericks - OS X 10.9) crashes the application.  The update thread to which you pointed notes that the 10.7 compilation (v4.1) should work in OS X 10.8 and 10.9 as well.

Oh well.  It would be nice to be able to open a DNG Float directly and tone it in a toolset like RT.

thanks for the heads up!

kirk

Hi kirkt,


unfortunately I cannot comment - I do not use Mac.

However, if you can take your time, can you please report the crash you experienced (by posting at the RT forums)?  I believe this would be appreciated by the developers and the RT community.

[kirkt]

Reported.

kirk

[Isaac]

RT 4.1 for Windows XP 32-bit

Seems to crash quite frequently, without data loss -- so that doesn't bother me much.

I'd be happy to use a debug version for a while, is a debug version available?