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Merge pull request #7254 from Lawrence37/ilce-7m3-black-level

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Sony ILCE-7M3 (and other Sony cameras) black level
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Lawrence37 2024-12-14 12:46:01 -08:00 committed by GitHub
commit 31e90afe22
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GPG Key ID: B5690EEEBB952194
3 changed files with 13 additions and 3 deletions
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1
rtengine/camconst.json
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@ -3092,7 +3092,6 @@ Camera constants:
// "raw_crop": [ 8, 8, 6008, 4008 ], // full raw frame 6048x4024 Dcraw auto identify 6024x4024, jpeg 12,12,6000x4000
// "ranges": { "black": 512, "white": 16300 }
"ranges": {
"black": 512,
"white": [
{ "iso": [ 50, 64 ], "levels": 16100 }, // typical compressed 16372, non compressed 16383, LongEx iso50,16150 , 16275
{ "iso": [ 80, 100, 125, 160 ], "levels": 16200 }, // typical compressed 16372, non compressed 16383, LongEx iso50,16150 , 16275

8
rtengine/dcraw.cc
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@ -6741,6 +6741,7 @@ int CLASS parse_tiff_ifd (int base)
FORC3 if (i > (int)cblack[c]) i = cblack[c];
FORC4 cblack[c] -= i;
black = i;
sony_meta.sr2subifd_black2 = true;
break;
case 29459:
FORC4 cam_mul[c] = get2();
@ -9733,7 +9734,9 @@ void CLASS adobe_coeff (const char *make, const char *model)
break;
}
if (load_raw == &CLASS sony_arw2_load_raw) { // RT: arw2 scale fix
black <<= 2;
if (!sony_meta.sr2subifd_black2) {
black <<= 2;
}
tiff_bps += 2;
} else if (load_raw == &CLASS panasonic_load_raw) {
tiff_bps = RT_pana_info.bpp;
@ -10468,7 +10471,8 @@ void CLASS identify()
top_margin = filters = 0;
strcpy (model,"C603");
}
if (!strcmp(make,"Sony") && raw_width > 3888)
// From LibRaw: Do not set black if black or cblack is already set.
if (!strcmp(make,"Sony") && raw_width > 3888 && !black && !cblack[0])
black = 128 << (tiff_bps - 12);
if (is_foveon) {
if (height*2 < width) pixel_aspect = 0.5;

7
rtengine/dcraw.h
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@ -174,6 +174,12 @@ protected:
unsigned sub_frame_shot_select;
};
struct SonyMeta
{
/// SR2SubIFD black levels tag 0x7310 exists.
bool sr2subifd_black2 = false;
};
int fuji_total_lines, fuji_total_blocks, fuji_block_width, fuji_bits, fuji_raw_type, fuji_lossless;
ushort raw_height, raw_width, height, width, top_margin, left_margin;
@ -201,6 +207,7 @@ protected:
std::string RT_software;
double RT_baseline_exposure;
struct MergedPixelshift merged_pixelshift;
struct SonyMeta sony_meta;
public:
struct CanonCR3Data {