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Topics - discocalculi

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1
General Chat / Possible Syncproblems when shooting infrared
« on: May 07, 2013, 07:43:49 PM »
Long time no C.

I was out enjoying the sun today and came back with some pretty weird exposures using custom white balance and a Hoya r72 filter. It looks almost as if there's some sort of sync problem. Not sure how to reproduce or what to make of it, but perhaps something to dig deeper into.

5D Mark II, 24-70 f/2.8 I, Hoya r72. Images straight from camera via Pixelmator....




2
General Development / Customizable live view
« on: October 30, 2012, 09:22:17 AM »
I've found some DIGIC values that control tint of the live view screen, controls the text colors and also the box messages.

C0F14800 [ ] [N] Tints live view in nice colors.
C0F14804 [ ] [N] Changes screen text color (but not shutter/aperture colors if in 5x zoom)
C0F14808 [ ] [N] Changes colors of the text screen bar (ie where digic poke values are shown)
C0F1480C [ ] [N] Changes colors of the little x5 zoom icon and the bottom shutter/aperture exposure field
C0F14810 [ ] [N] Changes colors of shutter/aperture when in for example 5x zoom mode

Would be nice to add this also in the Color schemes and even tinting the live view screen could come to use. ie. tinting the screen is a darker blue, if the theme was blue or whatever...

It seems most color-combinations are selectable...

3
General Development / DIGIC Color control
« on: October 29, 2012, 07:32:08 PM »
I've just scratched the surface but found that 0xC0F1A000 - 0XC0F1AFFF possibly holds all the colorchannels including white. I was too lazy to make any looping code, but unrolled it instead:

http://pastebin.com/PfF5DYua

Put the code for example into lv-img-engio.c  in function digic_poke_step() after digic_show();
Dont forget to mask out //_EngDrvOut(digic_register, digic_value);

[Edit]
Running it will resemble Movie ML digital ISO gain. But there's possibility of changing each color channel, ie. like the filters in Sin city, or others. The only problem is that not all the values have been mapped. This requires some further DIGIC Poking, or code testing and mapping...

[Edit2]
Possible banding and noise is introduced in the shadow areas. Some of the registers will not react until for example underexposed by -2 EV or overexposed +2 EV of a certain color. 

http://magiclantern.wikia.com/wiki/Register_Map/Brute_Force/C0F1xxxx#C0F1A0xx

4
General Help Q&A / White Balance and Raw conversion
« on: June 29, 2012, 11:02:44 AM »
With ML I can set the white balance to some pretty extreme numbers and also control the individual RGB values. But when  importing these files into the various raw converters I sometimes run into problems:

Adobe Camera Raw 7.1 (PS, Lightroom) 2000-50000 K  -150,+150 tint
Dx0 Optics 2000-20000 K -100,+100 tint.
Aperture 2000-10000 K -50,+50 tint.

There are of course a few that goes under 2000K:

Capture One 800-14000 K -50,+50 tint.
LightZone 1000-40000 K -20,+20 tint.
Corel Aftershot Pro 1500-10000 K -150,+150 tint.
Bibble 1500-10000 K -150,+150 tint.


Anyone know of any other programs?

I know Picasa seems to solve stuff quite ok, Pixelmator similarly and the preview of mac as well.



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