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This features is available with A7R III and requires Sony software Image Edge. SR2DataIFD12 directory with 124 entriesĪRQ likely means Alpha Raw Quad shots, which uses pixel shifting to capture high resolution pictures by combining 4 ARW pictures.SR2DataIFD11 directory with 124 entries.SR2DataIFD10 directory with 124 entries.See (Exiftool: RAW_SONY_A100.txt) version 4.0 See (Exiftool : RAW_SONY_R1.txt) ARW version 1.0 SRF (jan 2004)įrom (Exiftool output: RAW_SONY_) SR2 (dec 2005) 'Uncompressed' is used when it is 'lossless'.īut there is lossless compression ! They waited 2021 to adopt lossless jpeg when Canon use it since 2004 ! TIFF Structureīelow are examples of TIFF structure for SRF, SR2 and some ARW versions. 'Compressed' is used by Sony, where this is 'lossy'. LossLess Jpeg92 (starting with Alpha 1), in 2021 This is lossy : '11 bit 'base' values, 7-bit 'deltas', 11 to 14 bit tone curve' say Rawdigger See sony_arw_load_raw()Įither uncompressed 12bits. See sony_load_raw() in librawĪRW1 : 12 bits (starting with A100). SRF : 16bits aligned, 12 bits data, big endian.

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> exiftool -FileFormat -SonyModelID -RAWFileType A1_DSC02244.ARWīased on dcraw and dnglab code source, there are 4 different kind of compression: > exiftool -FileFormat -SonyModelID -RAWFileType RAW_SONY_A100.ARW You can extract format information with Exiftool with -FileFormat : Here is a more detailed view of evolution, and links to implementations: Model SRF, SR2 and ARW 1.0 : 12 bits uncompressedĪRW 2.1 : 12 bits cRAW (11 bits + 7 bits). RAW versions and formats had additional features over time:

SRF likely stands for Sony Raw File, SR2 is version 2 of SRF, and ARW means Alpha RAW. SRF appeared in January 2004 (DSC-F828), SR2 in December 2005 (DSC-R1) and ARW in July 2006 with Alpha DSLR-A100.ĪRQ, pixel shifting, appeared in November 2017 (A7R III). This document describes RAW file formats used by Sony cameras, with extensions SRF, SR2, ARW and ARQ, from 2004 to today.Īll formats are based on TIFF format, with Intel (little) endianess ('II' marker). This is not a problem for evaluating RAW data but is probably not ideal.Description of Sony RAW file formats (SRF, SR2, ARW and ARQ)

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Of course, it is also possible to convert the compressed RAW image files to DNGs using Adobe's DNG Converter but the latter does not read the files quite correctly leaving a 16 pixel black line on the right side - apparently according to Alex the ActiveArea tag is incorrectly set by Adobe converter to full image instead of actual image area.

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completely white frame at same iso (30sec exposure, or several second exposure without lens)Īlex may be contacted at Alex Tutubalin ] completely black frame (lowest ISO, cap on lens, shortest shutter speed, aperture max closed) 'If you have access to Fuji X-Pro2 camera, could you please make two shots in compressed file mode: Unfortunately, Fujifilm seem a little coy about releasing documentation to support this compressed format and it seems mostly unsupported with the exceptions of Adobe and Silkypix.Īlex from LibRaw - developer of RawDigger and FastRAWViewer - is keen to offer support for this Fujifilm compressed RAF format in these excellent tools and so he needs one of you kind new X-Pro2 owners to provide him with a couple of 'baseline' compressed RAW file images as follows: These are almost invariably uncompressed (~49MB) RAFs but kindly provided access to some compressed RAFs (this being a new option on the X-Pro2) on this thread:Īnd these are the first and only lossless compressed RAW image files I have seen from an X-Pro2 to date. There are a few RAW image files made available on the net and on this forum taken under ideal and not so ideal conditions/exposures at a range of ISOs. I am no expert on RAW data analysis but am keen to understand for myself if there is any substance in any of the comments and opinions expressed to date. SNR levels) in the X-Pro2 RAW files which seems to be dividing opinion about the performance of the new X-Trans III sensor. There is some informed (and not so well-informed) critical discussion around the traps about perceived 'higher than expected' noise levels (i.e.