crw2dpx - Frequently Asked Questions

If your questions don't get answered here, please get in touch with me.

 

 

 

Q: How can I purchase a license?

A: A license for crw2dpx can be purchased from inside the software. Just download the demo and each time you start the software it will greet you with a pop-up asking whether you want to purchase a license. Clicking the "buy now" button will open a browser window allowing online purchase using PayPal. Once your payment has been received you'll automatically be sent an email with your license code. Just copy that code into the license code field in the software (under "Preferences").
In order to purchase a license for the command-line based version, please get in touch with me using the contact form or via email.

 

Q: Can my license code be used on another computer?

A: A license is locked to your computer's hardware ID. Thus, you can't use it on another machine. However, if you send an email explaining that you need a new license code for your new computer, chances are you'll get one for free (unless you "get a new computer" every week).

 

Q: What camera models are supported?

A: Currently crw2dpx supports the camera models listed below. If your camera is not listed but shoots CR2 files, please send me a sample file (dropbox link or similar preferred)!

  • Canon EOS 100D / Kiss X7 / Rebel SL1
  • Canon EOS 20D
  • Canon EOS 30D
  • Canon EOS 350D / Kiss / Rebel XT
  • Canon EOS 40D
  • Canon EOS 400D / Rebel XTi
  • Canon EOS 450D / Kiss X2 / Rebel XSi
  • Canon EOS 50D
  • Canon EOS 60D
  • Canon EOS 70D
  • Canon EOS 80D
  • Canon EOS 500D / Kiss X3 / Rebel T1i
  • Canon EOS 550D / Kiss X4 / Rebel T2i
  • Canon EOS 600D / Kiss X5 / Rebel T3i
  • Canon EOS 650D / Kiss X6 / Rebel T4i
  • Canon EOS 700D / Rebel T5i
  • Canon EOS 5D
  • Canon EOS 5D Mark II
  • Canon EOS 5D Mark III
  • Canon EOS 5D Mark IV
  • Canon EOS 5DS
  • Canon EOS 6D
  • Canon EOS 7D
  • Canon EOS 7D Mark II
  • Canon EOS 1000D / Rebel XS
  • Canon EOS 1100D / Kiss X50 / Rebel T3
  • Canon EOS 1200D / Kiss X70 / Rebel T5
  • Canon EOS 1300D / Kiss X80 / Rebel T6
  • Canon EOS-1D Mark II
  • Canon EOS-1D Mark III
  • Canon EOS-1D Mark IV
  • Canon EOS-1Ds Mark II
  • Canon EOS-1Ds Mark III
  • Canon EOS-1D X
  • Canon EOS M
  • Canon PowerShot G11
  • Canon PowerShot G12
  • Canon PowerShot G1 X

 

Q: Does crw2dpx work with sRAW files?

A: Very early versions did support sRAW files. Because sRAW files store already debayered image data in a chroma-subsampled format (YCbCr 4:2:2) the available image quality is limited compared to regular RAW files. Maintaining the extra code needed for the sRAW format didn't seem to be justified given the limited use these files seem to seeing.

 

Q: Does crw2dpx support Nikon (.NEF) RAW files?

A: Currently the only file format supported is CR2. If enough people ask for Nikon NEF support it might get added in a future version. So just ask.
The command-line version of crw2dpx that is available on request does support NEF files from a selection of Nikon cameras.

 

Q: Compared to the in-camera JPEGs the files written by crw2dpx seem too dark! Why is that?

A: The JPEG files written by the camera have the selected "Picture Style" applied to them, whereas the files written by crw2dpx have not.
Even with "Picture Style" set to "Flat" or "Neutral" there seems to be some processing happening inside the camera.

 

Q: I want to try the new GPU rendering introduced in v1.5, what GPU does it need?

A: On paper the requirements are OpenGL 2.0 or later and support for the GL_EXT_gpu_shader4 extension. And it needs lots of VRAM!
Image data is stored in 32bit floating point RGBA textures on the GPU. And there are several of them. Minimum is roughly 2GB of VRAM for CR2 files up to 18 megapixels and more for larger files.
So apart from the VRAM requirements, any more or less modern GPU - even in a laptop computer - should do. It doesn't matter whether its Nvidia, AMD or Intel. Please note that for Nvidia GPUs on Linux you should install the Nvidia driver since Nouveau doesn't support all of the required features.

 

Q: Since your software uses dcRAW under the hood anyway, why don’t you support the other RAW formats that dcRAW is supporting?

A: There is no dcRAW under the hood. In case you got confused by the term "GUI" in the name, this just means that this is the version actually having a graphical user interface, compared to the command-line based "CLI" version.

 

Q: Since your software uses FFmpeg under the hood anyway, why don’t you support the other export file format that FFmpeg is supporting?

A: There is no FFmpeg under the hood. In case you got confused by the term "GUI" in the name, this just means that this is the version actually having a graphical user interface, compared to the command-line based "CLI" version.

 

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