vett93
Veteran Member
My Sony A7II's kit lens has a blue-ish color cast and the Tamron 28-75 F2.8 has a yellow color cast. What is a good way to get rid of such color cast?
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How to get rid of lens color cast in LR5/6?
- Thread starter vett93
- Start date
You could try using the radial filter or brush and correct the lens colour cast with the WB setting. Or, you could use the free RawTherapee or Capture One, which offer a lens colour cast correction facility (flat field correction). The Pro version for Sony of CO comes at a price point that's difficult to disregard if you're a Sony user. That said, you won't get the calibrated distortion correction for that Tamron lens and you'll have to rely on a manual correction.
[edited to add] If you're talking about a general lens colour rendition your best bet within LR is to do a camera calibration with those lenses on and something like the Xrite ColorChecker Passport. But that won't correct those lens inconsistencies that vary the colour cast with aperture values.
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Marcin
http://www.flickr.com/photos/sankos/
[edited to add] If you're talking about a general lens colour rendition your best bet within LR is to do a camera calibration with those lenses on and something like the Xrite ColorChecker Passport. But that won't correct those lens inconsistencies that vary the colour cast with aperture values.
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Marcin
http://www.flickr.com/photos/sankos/
Last edited:
Michael Edward Rudge
Veteran Member
But sorry I am not that good, so I just did my best ,, this lens now has a purple cast LOL
Sailor Blue
Forum Pro
Do you have a White Balance card? If not, why not? A WB card is a basic piece of equipment you should have, just like a lens shade.
Take a picture of the WB card with each lens in daylight and use the LR Develop Module Basic Panel WB Eyedropper to find out how much the WB and Tint shift. From now on you can set the WB to the light conditions, i.e. daylight, shade, cloudy, incandescent, etc., then make the same shift to WB and Tint to color correct for the lens.
Better is to set a Custom WB when you are taking photos. That will automatically correct the colors for your lens as well as the WB of the lighting.
Even Better is to buy a X-Rite ColorChecker Passport. Create Dual Iluminant profiles for each lens using images taken with incandescent lighting and in daylight shade. Apply these when importing then set the WB for the actual lighting conditions. Note that for this to work you should set the WB of the camera to the correct value for the light when you take the photos.
Best is if you shoot the Passport in each lighting condition, then you can create a color profile for your image sensor and lens for the lighting conditions and set the WB using the gray patches on the Passport.
X-Rite ColorChecker Passport – X-Rite Photo – X-Rite Passport
Take a picture of the WB card with each lens in daylight and use the LR Develop Module Basic Panel WB Eyedropper to find out how much the WB and Tint shift. From now on you can set the WB to the light conditions, i.e. daylight, shade, cloudy, incandescent, etc., then make the same shift to WB and Tint to color correct for the lens.
Better is to set a Custom WB when you are taking photos. That will automatically correct the colors for your lens as well as the WB of the lighting.
Even Better is to buy a X-Rite ColorChecker Passport. Create Dual Iluminant profiles for each lens using images taken with incandescent lighting and in daylight shade. Apply these when importing then set the WB for the actual lighting conditions. Note that for this to work you should set the WB of the camera to the correct value for the light when you take the photos.
Best is if you shoot the Passport in each lighting condition, then you can create a color profile for your image sensor and lens for the lighting conditions and set the WB using the gray patches on the Passport.
X-Rite ColorChecker Passport – X-Rite Photo – X-Rite Passport
vett93
Veteran Member
Thanks. I do have something for white balance. But is color cast a WB issue? My Tamron lens some yellow and green color cast. I try to adjust WB but it still looks a bit off.
That is good advice, however if the lens has a colour cast problem, which varies according to the aperture used, then he'd have to profile that lens for each aperture he's likely to use. A much more practical and better solution is to apply a flat field correction. Unfortunately LR doesn't have that feature.
StrokerAce23
Forum Enthusiast
Just learning the term flat field correction, these are two of the top Google results.
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tobinators.com
Thomas Niemann
Senior Member
Thanks for the post. Not an issue for the lenses I have but good to know!
Thanks for the links. I use the DNG editor but somehow didn't come across this plug-in. I wonder if it's going to work with cameras like my RX100, which in LR has baked-in lens correction. Normally I don't convert the .arw files into .dng's but if the plug-in can give me a better conversion I might have to add this extra step to my workflow (I wonder if Adobe is going to incorporate this into the official release of LR).
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Marcin
http://www.flickr.com/photos/sankos/
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Marcin
http://www.flickr.com/photos/sankos/
Last edited:
This probably something that you don't want to hear but there is a facility on Color Effex Pro, which is a CS6 plugin , which does the trick - white Neutraliser. It very effectively removes colour casts & is very adjustable - I use it frequently.
vett93
Veteran Member
Yes, but it does not get rid of color cast.
Create custom profiles for both lenses. Use X-rite ColorChecker Passport or similar.
According to the colornumbers it seems that your kit-lens has some coating going on that gives the image a cyan tint. The reds are almost the same in both images, but the greens and blues are more present there. The Sigma does do a better job here, also in image quality.
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