What Is a RAW+JPEG Pair?

Why cameras produce two files per shot

Many cameras can be set to capture RAW plus JPEG simultaneously, so a single press of the shutter writes two separate files for the same exposure: an unprocessed RAW, like a .CR3 or .NEF, and a processed JPEG the camera generates in-camera. Both files share the same frame, timestamp, and file name aside from the extension, for example IMG_4021.CR3 alongside IMG_4021.JPG. Photographers use this mode to get an immediately usable JPEG for quick previews or sharing, while keeping the RAW for full editing latitude later.

Why pairing matters during a cull

A RAW+JPEG pair represents one photographic decision, not two. If a culling pass treats the RAW and the JPEG as unrelated files, a keep-or-reject call made on one can drift out of sync with the other: you reject the JPEG but the matching RAW stays behind, or you keep the RAW but its JPEG counterpart never gets sorted the same way. Either mismatch leaves orphaned files scattered across your folders, RAWs with no preview, or previews with no editable original behind them, which turns a simple cull into a cleanup project later.

A concrete example

Say a camera set to RAW+JPEG produces 4,000 frames for a wedding, meaning 8,000 files on the card once you count both extensions. If a culling pass only recognizes JPEGs and moves them to a reject folder, the 4,000 RAW counterparts stay put, unsorted and disconnected from the decision that was just made about their matching image. Recognizing the pair as one unit keeps the RAW and JPEG moving together, so the cull result is 4,000 sorted decisions, not 8,000 individually tracked files.

Limitations

Pairing generally relies on matching file names and capture data, so anything that breaks that link, renaming one file but not the other, or importing the RAW and JPEG from separate exports, can leave a pair unmatched. It is worth spot-checking that both files of an important pair move together, especially after any manual file management outside the culling tool itself.

How Cull AI Studio handles this

Cull AI Studio detects RAW+JPEG pairs, and they always travel together through the sort: whatever decision applies to the pair, KEEP, REJECT, or REVIEW, applies to both files, so you never end up with an orphaned RAW or a stray JPEG. For the fuller workflow on shooting and culling in this format, see the RAW+JPEG culling workflow guide.