RAW Files not usable on the SJ8 Pro

Discussion in 'SJ8 Series' started by Michael Dittrich, Jan 10, 2019.

  1. Michael Dittrich

    Michael Dittrich Member

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    After a firmware update I extensively used the RAW photo option on the SJ7 Star. The workflow was a mess but it worked an I got very pleasing results. Two seperate tools were required to be able to import the resulting DNGs in Lightroom. Here is a sample: https://plus.google.com/u/0/+MichaelDittrichMemories/posts/CnqJ3At6atu

    Now with the SJ8 Pro there is only a single tool for converting the RAW files to DNG. But after importing the files in Lightroom it is virtually impossible to get the colors right. In this form it is unusable. Advertisung with RAW support and delivering this is a shame!

    Here how the result looks like: https://plus.google.com/u/0/+MichaelDittrichMemories/posts/SPwqzat9Vbe
    Here the link to the DNG file: https://drive.google.com/open?id=1nonPhUexnarSoyOIYyO9pJ7S5S7v5gFN (the NEF file looks even worse)

    The camera was delivered with the firmware version 1.2.5.
    After updating to 1.2.9 the situation is the same.
     
    Last edited: Jan 10, 2019
  2. urix

    urix New Member

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    For those on macOS: try to search for RAW2DNG in Mac App Store - it is my new app to solve this problem.
     
  3. Sulev Svilponis

    Sulev Svilponis Elite

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    SJ8 Pro obviously supports RAW files. Unfortunately there are no known raw converters, that support this type of raw. If not to consider the one, mentioned in previous post.
     
  4. Michael Dittrich

    Michael Dittrich Member

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    Would you accept this as real RAW support for any other product? RAW support means the whole chain and not storing the file in an uncomressed format that nobody else can handle. I am not a MAC user (and will never be), so I can not use them. For me this is a key feature as I want to use the SJ8 Pro as a B camera for still images when I don't want to carry an extra ultra wide angle lens for my main camera.
     
  5. Sulev Svilponis

    Sulev Svilponis Elite

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    I don't have a SJ8 Pro. I hacked a file sent by another SJ8 Pro user. Found out, that SJ8 Pro uses 16 bits per pixel (2 bytes per pixel) in 4000x3008 size raw files, SJ8 Plus (which I have) uses 12 bits per pixel (2 pixels in 3 bytes) in 4000x3000 size raw files. It seems, that the converter knows, that the Pro-s files are slightly larger, but does not take into account, that the Pro has greater bit depth. Therefore those colors deteriorate in conversion process.

    You may find this information to be useless for you, but maybe it has some use for other people.
     
  6. Michael Dittrich

    Michael Dittrich Member

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    When I use the setting in Irfan View that are attached I get a correct greyscale image.
    The result is way to dark but the content is OK.
    With the 16Bit settings the result is lets say funny.
    From the file size 4000 x 3008 x 2 = 24.064.000 16Bit per pixel makes perfect sense.
    But I have no experience in RAW image development the hard way;-)

    This is the RAW file:
    https://drive.google.com/open?id=1tV8WH6tEUX9pJUixtQW5DDoqx45uIZ-S
     

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    Last edited: Jan 11, 2019
  7. Sulev Svilponis

    Sulev Svilponis Elite

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    I just try to figure out the bit order of the SJ8 Pro raw file. Could you, please, download this artificial SJ8Pro raw sample, open it in Irfanview with setting 16 BPP with 5:6:5 option and Big endian checkbox unchecked (should give red screen) and take a raw photo with SJ8 Pro So, that the FOV is full of the color? And then repeat this procedure with the Big endian checked (should give blue screen). And upload those raw files with names red and blue respectively.

    http://www.upload.ee/files/9409892/00F0-Red.raw.html
     
  8. Michael Dittrich

    Michael Dittrich Member

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  9. Sulev Svilponis

    Sulev Svilponis Elite

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  10. Michael Dittrich

    Michael Dittrich Member

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  11. urix

    urix New Member

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  12. Michael Dittrich

    Michael Dittrich Member

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    They can for sure, but they are not willing as it seems
     
  13. Michael Dittrich

    Michael Dittrich Member

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    What drives me nuts is that they released a software that could have not been tested!
    How cracy ist that?
    It looks like a complete color channel is missing.
    The only thing that is OK is the embedded thumbnail.
     
    Last edited: Feb 12, 2019
  14. Michael Dittrich

    Michael Dittrich Member

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    Another user helped me to find a converter that works now.
    I found the link he gave me before, but I was not able to download it there as I got the message "Invalid File Specified" not knowing, that I had to register and login there for the download.
    Not it is proven that the bug is not in the firmware but in the converter.
    Here some samples of developed images:
    https://photos.app.goo.gl/RMyBw7Ws1d9ymrZ6
    (as Google Fotos does not sort by name on the Webinterface, the images from "out of camera" are first and the developed images are at the bottom)
    Look at the difference, it is really worth it!!!
     
  15. Sulev Svilponis

    Sulev Svilponis Elite

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    Could you provide a link to the converter?
     
  16. Michael Dittrich

    Michael Dittrich Member

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  17. Michael Dittrich

    Michael Dittrich Member

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    A parameter description for the variables in the INI file of the working converter (see link above) can be found here:
    https://github.com/wildstray/raw2dng


    ; file_size, data_offset, raw_width, raw_height, cfa_colors, line_length, bits, flags, camera ID1, camera ID2 etc
    ; file_size is used for autodetect camera type if paired jpeg file is not available
    ; data_offset - offset to begin of raw data (16-bits only)
    ; raw_width - width of output raw picture. Without rubbish pixels in the end of line.
    ; raw_height - height of output raw picture. Without rubbish pixels below the last line.
    ; cfa_colors - one of 0 - GMYC, 1 - MGCY, 2 - YCGM, 3 - CYMG, 4 - BGGR, 5 - GBRG, 6 - GRBG, 7 - RGGB;
    ; line_length - Exactly input line length in bytes.
    ; bits - supports 10, 12, 16 bits per pixel. Output data has 12 bits.
    ; flags is OR of : 1 - interlaced, 2 - ARM CPU (mixed data bits), 4 - intel byte order in 16-bits data
    ; Camera IDs is the list of cameras with same parameters.
    ; This ID have to be matched to the first camera name in EXIF Model field.
    ; For example, if EXIF camera model is "C40Z,D40Z" - ID is C40Z.
     
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  18. Sulev Svilponis

    Sulev Svilponis Elite

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    It seems to be ordinary raw2dng app, that was used already in the early SJCAM converter solution by Yan Burman. What was the specific parameters row for SJ8Pro from the ini file?
     
  19. Michael Dittrich

    Michael Dittrich Member

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    24064000, 0, 4000, 3008, 7, 8000, 16, 4, SJCAM_SJ8_Pro
     
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