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M8.2 / 50mm Summarit 1.5

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Edited by Henry Fool
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Leica M8 with a Y48 (medium yellow) filter, M8RAW2DNG, then custom FORTRAN routine for demosaic and conversion.

 

16245090154_2f64fa0b4c_o.jpgMONO_Y48_SMALL by fiftyonepointsix, on Flickr

 

100% crop.

 

16245090234_bfdf9aa91b_o.jpgMONO_Y48_CROP by fiftyonepointsix, on Flickr

 

The Blue channel still has a lot of sensitivity past a tradition color-separation filter "BLUE".

 

I will compare the M8 with the Monochrom, both with Yellow filters. What strikes me about the M8 image: the image is very uniform as the channels are more balanced for the conversion.

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I can only be happy with the M8

 

My good friend let me fotograf him at his place (i will offer the pictures printed)

 

Jpg out of cam (very little contrast ad in LR5)

 

the color one is from a RAW with M8Raw2DNG conversation from DNG in LR5

 

the last one is a ISO 5000 equivalent (- 5stop EV M8Raw2DNG LR5 some PP used the VL 15mm at f/4.5)

 

i think AMAZING :roll eyes:

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^^^^

||||

 

That ISO5000 shot is really clean!

 

I love this camera, having a blast with the RAW files thanks to Arvid.

 

I revised the Demosaic routine for the Green channel.

 

16893447772_ab0dac82f0_o.jpg5677_newdemosaic by fiftyonepointsix, on Flickr

 

100% crop, Y48 filter used, then image converted to Monochrome using Fortran, written as Raw. I am learning DNG.

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VL 40 f1.4

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Edited by prud
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I've been using the M8 with a Y48 Medium Yellow filter. The idea, as other M8 users on this forum have stated, it gives better conversions to monochrome if you know in advance that you will be simulating a yellow filter. Why? the Blue channel in the M8 (and M9) is sensitive to light well past the cutoff of the yellow filter. It's like getting a free channel. Most software is not set up to handle this, and seems to try to balance the channels before allowing a conversion. Maybe a way around that? I was not sure, so wanting to understand exactly what the software was doing: did my own. The algorithm is very simple: reads in Arvid's DNG from M8RAW2DNG, does it's own demosaic of the Red, Green, and Blue channels: then adds them. Results written to disk as raw data, then brought into Photoshop using "OPEN AS RAW". I've been using a "curves" calibration for all the files, Photoshop RAW expects 'FFFF'x to be white. I export to TIFF, but will add that to my code.

 

16691969547_562b7512bc_o.jpgM1015730 by fiftyonepointsix, on Flickr

 

16691969637_1fee804dbb_o.jpgM1015728 by fiftyonepointsix, on Flickr

 

16279310333_baa3193070_o.jpgM1015732 by fiftyonepointsix, on Flickr

Edited by Lenshacker
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M8 VL40 DNGMonochrome

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Just received my Printed Photographies back from the Labor 15x20 and bigger prints

 

Colored

 

B+W

 

ALL fine

 

Great looking, superb resolution, nice DOF sharp and and ………

 

The Leica M8 was and still is a great camera. As a Digital Leica a Bargain worth every penny

 

:D

 

chears Nic

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(M8/28)

 

lambda.

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M8 and Summicron 50mm collapsible (1952)

 

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Honey Bee in White Sage

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This is another experiment with monochrome conversion. It started with an uncompressed DNG from Arvid's M8RAW2DNG. The lens has an Orange filter over it, and the post-processor converts it to two colors- then adds the two channels. Blue/Green are "equalized" and used uninterpolated for 3 of the 4 pixels in the Bayer cells, 4th is interpolated from green. The Red channel is interpolated, two channels added.

 

16747498677_4065be5aa3_b.jpgM1015790 by fiftyonepointsix, on Flickr

 

Still an experiment.

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Another of the "two-Channel" conversions, this time the blue/green are automatically matched based on histogram.

 

16770781820_9e8a43ec2a_b.jpgM1015792 by fiftyonepointsix, on Flickr

 

Full-sized Jpegs of the image uploaded, some slight adjustment for the black-level in Photoshop "Levels", but that is all. The rest is the raw convertor.

 

GEEK ALERT!

 

http://www.leicaplace.com/threads/1145/#post-8538

 

Source code for the conversion posted...

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