Why do you recommend RAW images?
When using RAW images we are able to extract a lot more information from the file resulting in much more detailed, accurate, and desirable corrections. In addition, our famous PRIME denoising only works on RAW images.
Why do I need to use unedited images?
To apply automatic corrections for your specific camera body / lens pair, we need to be able to identify the equipment and shooting conditions with 100% certainty.
To be able to correctly identify the camera body / lens pair, our software needs access to original, unedited exif information (this info tends to get edited / lost 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.
Can I use JPEG? TIFF?
You can use jpeg and tiff images, though you will get much higher quality corrections if you start with RAW!