This information applies to version 6 and newer
Why do you recommend RAW images?
DxO's software can extract a lot more information from the RAW files than from RGB images, resulting in much more detailed, accurate, and desirable corrections. In addition, our famous DeePRIME denoising technologies only works on RAW images.
Why do I need to use unedited images?
To apply automatic corrections for your specific combination of camera body and lens, we need to be able to identify the equipment and shooting conditions with 100% certainty.
In order to correctly identify the camera body/lens pair, our software needs access to original, unedited EXIF information, which can often be altered or lost inadvertently when images are processed. To apply the corrections and achieve desirable results, the image needs to be unaltered prior to being processed through DxO PhotoLab.
What will happen if I try a processed image?
The camera body/lens pair with which you shot the image may not be correctly identified by DxO PhotoLab (if at all) resulting in no automatic optical corrections. However, you can always use the manual tools available in DxO PhotoLab.
Can I use JPEG or TIFF files?
You can use jpeg and tiff images, but you will get much higher quality corrections if you start with RAW!