SRF is Sony's in-camera RAW
SRF is the raw sensor data a Sony camera writes at the moment of capture. It's produced by the camera's own hardware and firmware — software can read it, but nothing can manufacture a genuine SRF from a finished BMP.
Looking to convert BMP to SRF? Here's the honest answer — and what works instead.
Turn your file into a share-worthy AI Effect — one tap, no prompts.
BMP is an uncompressed raster format that stores pixel data with no quality loss, producing large files. It is common on Windows.
BMP opens in most image viewers and editors on Windows and Mac.
SRF is Sony's earliest raw format from Cyber-shot cameras like the DSC-F828, predating the later ARW standard.
SRF opens in Lightroom, RawTherapee and Sony's original software; convert to DNG/JPG for modern use.
No. SRF stores the raw signal a Sony sensor recorded at capture. A BMP is a finished image with that data already baked in and discarded — there's nothing for a converter to reconstruct.
RAW formats like SRF give maximum editing latitude — but only when they come straight from the camera. Converting a BMP to SRF would just wrap a finished image in a RAW container, with none of the benefits.
DNG is an open RAW container. You can convert a camera's own RAW (including SRF) into DNG, but you still can't turn a regular BMP into SRF or any real RAW.
BMP converts cleanly to PNG, JPG, TIFF and WEBP — free, no sign-up, no watermark.