Why are RAF files bigger?

Discussion in 'Fuji X-Mount Cameras' started by WT21, Jun 25, 2013.

  1. WT21

    WT21 FujiXspot Regular

    Feb 1, 2013
    Looking through some test shots, I see the Fuji RAF files tend to be around 25MB for ISO 200 and OMD ORF files tend to be around 15MB.

    This doesn't make any sense, because they are both about 16MP. Also, the Fuji generally is a little less noisy.

    Are ORF files compressed RAW (hopefully loss-less??) and Fuji un- or less-compressed? Is Fuji more bits?

    Anyone know the answer?
  2. jloden

    jloden FujiXspot Top Veteran

    Mar 9, 2013
    Hunterdon County, NJ
    Fuji files aren't compressed, and I believe the OM-D RAWs are using lossless compression.
  3. WT21

    WT21 FujiXspot Regular

    Feb 1, 2013
    Someone on DPR just answered, too. Said the tell-tale sign is the file size. RAF files are ALWAYS 26.1MB. I see my Canon 6D files and OMD files change each time, because they are compressed, so the size of the file is determined by how much can be compressed.
  4. flysurfer

    flysurfer X-Pert

    Feb 1, 2013
    Rico Pfirstinger
    EXR Processor II RAFs have variable size, too, but I have a feeling it may be due to different sizes of the embedded JPEG preview.
  5. Tdp

    Tdp Guest

    Why are RAF files bigger?

    ........ Genetics

  6. RT_Panther

    RT_Panther FujiXspot Veteran

    Feb 2, 2013
    I've been in the Air Force too long - when I saw the title, I instinctively thought "Royal Air Force"....:cool: