I am having trouble with purple showing as blue. I have change WB to 10000K which seems to work on the selected focus point, but the rest of the shot is a bit dull. i am using D300s AF-S 35mm 1:1.8G in Aperture Priority, Would appreciate any suggestions. Many thanks.
#1. "RE: Purple coming out as Blue" | In response to Reply # 0SheriB Nikonian since 11th Sep 2010Sun 01-Jul-12 09:21 PM
Have you tried using live view AS you change your WB to really see what you are getting? You can see how the color changes as you go through the Kelvin scale using the sub command dial ( front wheel) I find I have trouble getting a purple that looks like I think it should too, but I can get closer with this .
As far as the rest of the shot being dull..what other settings are you using?The focus point shouldn't be affecting the WB but it could be affecting exposure in the areas you think are dull (using spot?Matrix?)..And dull can mean a lot of things, such as lack of depth of field/focus, or low contrast (which can be fixed in post)..what Picture control are you shooting in? ..maybe you could post or link to an example of one of the shots where you feel this is happening,preferably with exif data included, or at least include shooting info in the body of your post .
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#2. "RE: Purple coming out as Blue" | In response to Reply # 0elec164 Nikonian since 15th Jan 2009Mon 02-Jul-12 09:10 AM | edited Mon 02-Jul-12 09:11 AM by elec164
As Sheri suggested, a sample image with EXIF data intact would be helpful.
It could be a WB issue, then again it might be that nothing is wrong at all. It has to do with the way our human visual system works as opposed to the camera's sensor. The sensor is more responsive to a larger range of light spectrum than our eyes are, especially in the infrared and ultraviolet. That could create color issues especially in the reds, purples and sometimes blues.
It's not an uncommon issue and a quick Google or Nikonscope search will bring up many discussions about this issue.
If that is the case, then there is no setting in the camera that will correct for the issue and the only solution is corrective processing in an editor.
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#3. "RE: Purple coming out as Blue" | In response to Reply # 2osprey1947 Registered since 05th Jun 2012Mon 02-Jul-12 04:41 PM
Thank you both for your comments. I must admit that in this particular shot i was concentrating on the purple dress to get the correct WB. I will take a few more test shots with more background also will use LV as suggested.
Will post results whatever the outcome.
Once again many thanks.
#4. "RE: Purple coming out as Blue" | In response to Reply # 3mklass Nikonian since 08th Dec 2006Tue 03-Jul-12 12:18 AM
Have you adjusted the Picture control or saturation? If you shot in vivid or landscape, changing to standard or neutral may help. Or just try reducing the saturation. You may still need to tweak the WB, but perhaps not as much.
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#5. "RE: Purple coming out as Blue" | In response to Reply # 0
Welcome to Nikonians. If you will fill in your profile, it will help us provide more accurate answers to your questions. Thanks in advance.
Sheri, Pete, and Mick have given you excellent advice. Without seeing an image or knowing more about the camera specs, I can only add the following.
You said you changed the white balance to 10,000 K, which is a very blue color temperature. Did you make this change in the camera, or in post processing?
In either case, the camera or post processing software will add red to the image to bring the color temperature down to somewhere around 5,200 K, or one of the "standard" daylight values. Adding red to an image will change blues to purple or magenta. Green/Magenta corrections may also occur.
The color temperature of the light falling on the dress will also have an effect. Shooting in shade at 8,000 K or more will result in a blue cast if the appropriate white balance is not used in the camera. What was the light source, and what white balance did you select in the camera for this image?
Tell us a bit more and we can continue.
HBB in Phoenix, Arizona
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