[SOLVED!] Dead pixels - Hot pixels - Banding in RAW recording

Started by crazypig, May 23, 2013, 08:13:14 AM

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a1ex

Uh... for some reason, the windows version doesn't do the math right, but the linux one does... looking into it.

Edit: solved, download again, it was a windows-specific compiling flag.

https://bitbucket.org/hudson/magic-lantern/commits/b5e91e24995e

fascina

I can't believe it, but banding is really completely gone with newest RAW2DNG tool! What a historic moment, now we can shoot RAW FullHD even under the most demanding situations without color pixels or banding or whatsoever.

Alex, I think you (and the rest of the team) will really make filmmaking history with this. FullHD raw from a superb fullframe sensor, without any negative sideeffects whatsoever. You should get the Technical Oscar for this. And the resolution is the maximum one can get out of FullHD. What an amazing time to live in. Thank you so much!

swinxx

https://www.dropbox.com/sh/bua4hwbm8w1i47f/3ArdOXBS5p

i have installed the newest build on my 5d mk3, 29_May,
made a complete reset of canon settings,
recorded some raw,
converted on the mac with raw2dng 0.10
got the same vertical noise.. :(
check the dropbox link.
the blue one is a screenshot and unsqueezed cause of anamorphic lens.
the dng is untouched.
thx.


squig

The mac version isn't updated yet, try again tomorrow with version 0.11.


LucaBrasi

Thanks a1ex and dev team for continuing the BMCC ass kicking, respect!!!

New raw2dng worked a treat  ;D

RenatoPhoto

A1lex.  Put up donation link so you can get 5D3.  I cannot keep up with all the testing!   ;D ;D ;D ;D

Congratulations!
http://www.pululahuahostal.com  |  EF 300 f/4, EF 100-400 L, EF 180 L, EF-S 10-22, Samyang 14mm, Sigma 28mm EX DG, Sigma 8mm 1:3.5 EX DG, EF 50mm 1:1.8 II, EF 1.4X II, Kenko C-AF 2X

vroem

I only have a 60D so I can't test this debug build. I made a dng with a lot of hot pixels by overexposing and using high iso. This way I found out that Adobe's raw engine corrects dead or hot pixels, but only the once that are not next to each other. Maybe this is a reason why results are so inconsistent...

I would suggest to use a program like RawTherapee for pixel peeping, it's free and open source.


1%

600D benefited from af_raw being set, try it on 60D. Did not get any banding.

marekk

I've got also a problem with some bad/hot pixels on 60D (I've just build ML from latest source).

https://docs.google.com/file/d/0B-HdscXfsKpgdXZGUUc0VTRVMEE/edit?usp=sharing

Quote from: vroem on May 30, 2013, 02:32:17 PM
I only have a 60D so I can't test this debug build. I made a dng with a lot of hot pixels by overexposing and using high iso. This way I found out that Adobe's raw engine corrects dead or hot pixels, but only the once that are not next to each other. Maybe this is a reason why results are so inconsistent...
[/img]

marekk

thx, I will try it
Quote from: 1% on May 30, 2013, 02:43:42 PM
600D benefited from af_raw being set, try it on 60D. Did not get any banding.

marekk

ok, no dead/hot pixels after compiling with lv_af_raw

Quote from: 1% on May 30, 2013, 02:43:42 PM
600D benefited from af_raw being set, try it on 60D. Did not get any banding.

a1ex


marekk

ok
I've just checked RawTherapee Hot/Dead pixel filter and it works..


Quote from: a1ex on May 30, 2013, 03:07:22 PM
lv_af_raw enables edge detection. Don't use it.

marekk

hmm ... does edge detection work when AF is in manual mode ?

Quote from: a1ex on May 30, 2013, 03:07:22 PM
lv_af_raw enables edge detection. Don't use it.

fascina

There is a bug in the new RAW2DNG. When I convert RAWs with it, there are black vertical lines in those areas of the photo with are strongly overexposed.

This doesn't happen with the old RAW2DNG, however old RAW2DNG has vertical banding. Vertical banding is completely gone with new RAW2DNG. The footage looks soooo clean now without old vertical banding problem.

Please download and use Windows RAW2DNG to see the problem (vertical lines):

http://www.webpage-design.org/M30-1805.RAW

Problem occures both with Global Draw Off and On.


bumkicho

Just tried new raw2dng window version. I see black vertical lines too.

Shield

Quote from: a1ex on May 29, 2013, 07:21:27 PM
My lens (50/1.8) has no correction data on 5D3.

So do you have a 50/1 or a 50/1.8?

squig

Quote from: a1ex on May 30, 2013, 06:33:32 PM
Those are zebras :D

Now I'm seeing them too!



I have a feature request, I want wombats!

fascina

Zebras at overexposed areas are gone with the newest RAW2DNG, thanks A1ex!  :)

The footage is so amazingly clean now that the 8-Pixel-Vertical-Banding is gone. I can't believe it, it's so breathtaking. So sharp, such a unbelievable dynamic range, exceeding the best photochemical film in dynamic range.



swinxx

yes, great. thank you. but it is pc only.
mac version 0.10 has the vertical noise problem. so we have to wait for .011 on the mac.
greets.

fascina

There are some subjects where the RAW2DNG algorythm does not yet recognize the 8-pixel-vertical-banding and therefore does not substracts it out.

I was about to upload some samples, but have seen that there is a new RAW2DNG update (https://bitbucket.org/hudson/magic-lantern/commits/97d9ed828854ad0d9376dd8e0917db51f3ee6df9) which is not yet available to download for Windows.

So I'll wait to check my RAW footage with the new RAW2DNG (once it will become available for download) before I upload the RAW samples.