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Sony A7R

Sony 11+7 bit Lossy Compression: Gapping

See Sony A7R File Sizes, Lossy Compression for background info on the Sony ARW 11+7 bit format.

This page shows how the Sony format “gaps” the data.

Sony 11+7 bit vs Nikon 14-bit lossless

The pair of histograms below were generated via RawDigger. The first ~4K of values are shown (pure black to mid tones).

Even at greatly reduced size, it is obvious that the Sony file format has far more gapping between values (lossy compression due to the 11+7 bit format).

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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

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Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Sony.

Variants Sony 11+7 Bit ARW, Nikon 14-bit Lossless NEF available in full article

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