Holding red

[cvfoto]

I am having a difficult time with the 1Ds in the red dept. I am shooting in the studio with Speedotron,(people). I have a color temp reading of 4700 kelvin, (Minolta color meter) through an Octalight with a color temp of 4700 in camera as well. I am shooting in color matrix 2 & color matrix 4 as well, and am getting areas of grey pixels in ruby red lips. I am also having this problem with images using tungsten lights with the camera at 3200 & and get the red break up mostly in the highlights.

I have been a studio photographer for 20+ years and this red issue is baffeling to say the least. Canon does not have an explanation. I hope someone out there does.

Christopher Voelker
www.voelkerstudio.com

[DonCoon]

Does the 1Ds have a Custom WB setting? I've found that's the only way to get a perfect WB. Setting Kelvin temps seems to be one dimensional (or is that 2 but not 3?) .

[cvfoto]

Yes it does have a custom WB setting. With Kelvin temp you find out what your lights are emitting exactly. I'm not sure I'm following your reply...

[leony]

If you're viewing the image in PhotoShop with soft proofing turned on and "show out of gamut" on as well, the pixels that have the color that the device profiled for soft proofing can't produce will appear in grey by default. That's the only explanation I can think of. Check your color meter vs. the camera by shooting a grey card with the metered color temperature - open in Photoshop and see if the colors are actually grey. If not, either your color meter or the camera are off. Keep in mind that canon only lets you set color temp in increments of 100K.

Hope this helps any.

I have a 10D and was getting those "grey pixels" when soft proofing to digital lab i'm using - until they updated their color management profile.

[cvfoto]

Leon, you are a rock star! I followed your suggestion & it is not my meter for sure, I already eliminated that as a possibility. "Out of gamut", ok how do I keep the reds "in gamut"? Is there a way to eliminate this from happening. Is there a way to set the "tone curve" for raw images that will keep the reds from losing detail & or going gray? Your response brings some light to the end of the tunnel.