Using RT for Sony CyberShot F828?

Software RawTherapee
1

Hello,
making my first attempts to use RT for the raw images from my Sony F828 I got this result, when the image is loaded (profile neutral):

819Ɨ614 316 KB

The camera JPG looks like this, when opened in RT (again profile = neutral):
817Ɨ609 320 KB

Is this the normal behaviour or does this come from the fact that the CCD has 4 colour filters?

Hermann-Josef

2

@Jossie please upload the raw file.

3

The raw file is to be found here: https://filebin.net/w6mo6royghm9eb8m

Hermann-Josef

4

I had no luck.

-TIFF-IFD0:ColorMatrix1=0.8771 -0.3148 -0.0126 -0.5926 1.2567 0.3815 -0.0871 0.1575 0.6632 -0.4678 0.8485 0.4548                                                                                                                                                               
-TIFF-IFD0:ColorMatrix2=0.7924 -0.191 -0.0777 -0.8226 1.5459 0.2998 -0.1517 0.2199 0.6818 -0.7242 1.1401 0.3481                                                                                                                                                                
-TIFF-IFD0:ForwardMatrix1=0.7458 0.0978 0.0841 0.0366 0.3681 0.6541 -0.1708 0.1486 0.0904 -0.6931 1.1056 0.3222                                                                                                                                                                
-TIFF-IFD0:ForwardMatrix2=0.728 0.2722 0.0204 -0.0563 0.396 0.6731 -0.2624 0.1933 0.0327 -0.2171 0.9509 0.0586                                                                                                                                                                 
-TIFF-IFD0-SubIFD:CFARepeatPatternDim=2 2
-TIFF-IFD0-SubIFD:CFAPattern2=0 3 1 2
-TIFF-IFD0-SubIFD:CFAPlaneColor=Red,Green,Blue,Cyan
-TIFF-IFD0-SubIFD:BlackLevel=491.8242188
-TIFF-IFD0-SubIFD:WhiteLevel=16383
-TIFF-IFD0-SubIFD:DefaultCropOrigin=11 6
-TIFF-IFD0-SubIFD:DefaultCropSize=3264 2448
-TIFF-IFD0-SubIFD:ActiveArea=0 5 2460 3293
-TIFF-IFD0-SubIFD:MaskedAreas=0 3293 2460 3341

    { // Quality X
        "make_model": [ "SONY DSC-F828" ],
        "dcraw_matrix": [ 7924,-1910,-777,-8226,15459,2998,-1517,2199,6818,-7242,11401,3481 ]
    },
5

@Morgan_Hardwood : Thank you for trying. So my suspicion is correct that the problem is due to the filter combination. A workaround is to use the RAW-converter in PhotoShopElements and convert it to a 16bit-TIF.

Hermann-Josef

6

Can you also please upload a sample to https://raw.pixls.us?
This will help it get picked up in regression testing for rawspeed, and make @LebedevRI happy.

1 Like
7

done!

1 Like
8

By the way, I tried using a DCP from Adobe DNG Converter and it the colors a cyan shade of green. Perhaps it inverted some channels. It looked bad, but maybe thatā€™s a clue. Though I donā€™t expect anyone to spend time investigating an arcane, old and dead format.

9

darktable opens it as linear Rec709 RGB and displays it properly, although the thumbnail is a bit odd. darktable also does distortion correction for the lens.

In RawTherapee 5.0 it looks OK with Color Management ā€˜Input profileā€™ set to ā€˜no profileā€™.

10

@Morgan_Hardwood

By the way, I tried using a DCP from Adobe DNG Converter and it the colors a cyan shade of green.

That camera is a very rare oddball - it has RED-GREEN-BLUE-YELLOW(!) CFA pattern.
darktable does have rudimentary support for such 4-color bayer cameras.

11

as @lee said, using no profile seems to work. But also using any DCP or ICC profile other than the ā€œproperā€ one (as found in the Adobe DNG converter) seems to give reasonable colorsā€¦ weird

I can only speak for myself of course, but indeed this is as far as Iā€™m going :slight_smile:

12

Sony F828 is not supported correctly in RT. This is also the case for some other old Cameras (like Nikon D1x for example). As I have thousands of D1x raw files on my storage, I would like to solve the D1x issues before the F828 issues.
But of course if someone is willing to solve the F828 issues, I wonā€™t have objections :slight_smile:

13

Good morning,

thanks for all the feedback. With a workaround available there is, to my opinion, no high priority. I was just curious, if I made a mistake. The use of raw format with this camera is also hampered by the fact that storage time is very long.

Hermann-Josef