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06-05-2012, 11:58 AM   #1
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reducing clipping in raw

How can I reduce clipping in raw? I have the xrite passport and most times get a "can't process profile likely due to a color clipping" or something in that order
The image of the color chart looks fine, but when I put it in photoshop it indicates a color, for example blue, is being clipped. this is not indicated (at least I don't think it is) in the K10 view finder..
Do I need to under expose or would this even help?
I desaturate the photo of the color chart in photoshop, but can't re save it as a dng as I get an "unable to read file" error

any help would be appreciated!

thanks

randy

06-05-2012, 12:39 PM   #2
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Check your histograms when shooting.
06-05-2012, 12:42 PM   #3
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Are you shooting jpeg or PEF?

To reduce clipping you reduce exposure, but I am sure you knew that. Does it ever work? Or just fail sometimes?

Do you normally save as DNG or it not working after you use the xrite software on the RAW?
06-05-2012, 01:03 PM   #4
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Sounds to me clipping isn't your only problem so the logical conclusion to make would probably be a something wrong with your program or file.

06-06-2012, 03:45 AM   #5
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Blue channel ...

Is it possible the program means "underexposed" or "out of scale"?
Somethimes I happen to find the blue channel clipped to "0" (zero...) on RAW files taken under artificial (yellow) light.
06-06-2012, 04:41 AM   #6
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QuoteOriginally posted by berand71 Quote
Is it possible the program means "underexposed" or "out of scale"?
Somethimes I happen to find the blue channel clipped to "0" (zero...) on RAW files taken under artificial (yellow) light.
the error I get is it can't make a profile because one or more channels are clipping.

QuoteQuote:
Are you shooting jpeg or PEF?

To reduce clipping you reduce exposure, but I am sure you knew that. Does it ever work? Or just fail sometimes?

Do you normally save as DNG or it not working after you use the xrite software on the RAW?
have been shooting raw (dng, not pef)
QuoteQuote:
Is it possible the program means "underexposed" or "out of scale"?
Somethimes I happen to find the blue channel clipped to "0" (zero...) on RAW files taken under artificial (yellow) light.
so you are saying that if I change the color temp it would do the trick?

QuoteQuote:
Check your histograms when shooting.
will it show which colors are clipping? The shots I took where under normal shooting conditions, like shade

thanks so far everyone!
06-06-2012, 07:39 AM   #7
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QuoteOriginally posted by slip Quote
the error I get is it can't make a profile because one or more channels are clipping.
Lik i said, i think more is going on because you also mention this.
I desaturate the photo of the color chart in photoshop, but can't re save it as a dng as I get an "unable to read file" error
it looks to me photoshop is unable to save the file for some reason, i think you need to focus on that and not the colorchecker because for color checker it also needs to save a file and if it can't do that then colcocheker can't read it.


QuoteQuote:
so you are saying that if I change the color temp it would do the trick?
Never had that problem with me (lightroom + colorchecker) but it's easy to correct the white balance with the card, simply take a reading of one of the grey squares.



QuoteQuote:
will it show which colors are clipping? The shots I took where under normal shooting conditions, like shade
You can split the histogram into red green and blue seperately but the problem is that it uses the JPEG preview and not the real RAW.
I often clip my photos according the camera but with lightroom everything is still within the limit.
06-06-2012, 10:41 AM   #8
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Agreed, mere clipping shouldn't generate error messages. Something else is wrong with your software, camera, or SD card.

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