What does this format store?+
RW2 is a raw image format used by compatible Panasonic LUMIX cameras. It keeps capture data for a raw processor instead of only a camera-rendered JPEG. Panasonic’s RAW Codec documentation explicitly identifies .RW2 files and limits support to named models, illustrating that the extension alone is not a decoder compatibility guarantee.
How does compression affect quality?+
Sample precision and raw storage details vary with the camera. Use the exact model’s documentation and decoder support list rather than assigning a fixed bit depth or compression method. Panasonic’s historical Windows codec is evidence of the format, not a recommendation for current software installation.
Does recognising RW2 guarantee support for every LUMIX?+
No. Panasonic’s codec history adds camera models individually. Your raw processor must support the model and recording mode that created the file.
What should I check before opening the file?+
Check the exact camera model and recording mode in the processor’s support list. Raw support is model-specific, even when the extension is recognised. Viewing an embedded JPEG preview does not prove the sensor data has been decoded.
What changes when I export to another format?+
Raw-to-image export develops the data: white balance, colour mapping and tone become part of the pixels. Grayscale, palette and SDR targets can discard additional information. Keep the original; converting a rendered image back into a raw container cannot reconstruct the capture.
When is this format useful?+
Use the raw original for repeated photographic development when exposure interpretation and colour decisions need to remain flexible. Export JPEG for an opaque delivery image or a suitable high-precision raster for further editing. Those exports bake in processing choices and cannot recreate the original sensor data, calibration or all vendor metadata.