Color Shift Problem

Canon 20D, Tamron 28-75, f8, 250sec - two AB800's with brollybox.
These images were taken using the same camera and light settings. Can someone tell me why I'm getting the color shift when I zoom out for a full figure shot. This doesn't seem to happen with every shot.

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Are you using auto white balance?

My guess is AWB as well...

Glenn, I discovered early on that AWB is wrong more than it is right with my 20D. Thus, I never under any circumstances use AWB. I always pick the most appropriate white balance setting in the camera.

I also shoot in RAW mode (actually RAW plus Large JPB) always so that if corrections are found to be needed, it is easy to make them during the RAW conversion process.

I find that with my 20D and a scene lit with my AlienBees lights, the "daylight" white balance setting in the camera gives me the closest to true white balance with no post-processing.

Thanks Guys - I bet that AWB is the problem. I am always careful to set custom white balance when shooting inside available light - but never thought about the AB's being equivalent to daylight. I does look like a tungsten setting taken outdoors. I should have been using custom white balance for portraits all along. I will also experiment with the daylight setting.

Thanks,

G

When it comes to RAW even setting the wrong white balance is much better than AWB, at least with the wrong white balance you know what it'll take to correct it and you can run that fix on all the files as a batch.. AWB is a one by one process.

When you shot RAW you can batch the WB no problem.
It's a 'one by one process' with jpgs though...

milleker wrote in post #2901730
When it comes to RAW even setting the wrong white balance is much better than AWB, at least with the wrong white balance you know what it'll take to correct it and you can run that fix on all the files as a batch.. AWB is a one by one process.

Yeah, this doesn't make any sense. Once you figure out the correct color temp and tint, you can easily paste the same settings to a batch of RAW files, regardless if they started out the same or not.

SkipD wrote in post #2900253
Glenn, I discovered early on that AWB is wrong more than it is right with my 20D. Thus, I never under any circumstances use AWB. I always pick the most appropriate white balance setting in the camera.

I also shoot in RAW mode (actually RAW plus Large JPB) always so that if corrections are found to be needed, it is easy to make them during the RAW conversion process.

I find that with my 20D and a scene lit with my AlienBees lights, the "daylight" white balance setting in the camera gives me the closest to true white balance with no post-processing.

Hi Skip,

Do you find that the daylight setting gives you better results with the Bees than using a 5600 degree K setting? I have gotten excellent results by using the color temperature of the Bees but have never compared it to daylight. I might have to try this and see.

A custom white balance is the best way to go.

But, just picking the "daylight" or "electronic flash" setting would also be a fast and reasonable approach.

Just avoid automatic white balance that will give you inconsistent results.

Enjoy!

TMR Design wrote in post #2902087
Hi Skip,

Do you find that the daylight setting gives you better results with the Bees than using a 5600 degree K setting? I have gotten excellent results by using the color temperature of the Bees but have never compared it to daylight. I might have to try this and see.

Every time I set up the lights I have different surroundings. I just use the "daylight" setting to be close. Then, if colors are critical, I usually shoot a reference card or two in a test shot and do the correction in RAW conversion. On occasion I will do a Custom White Balance when shooting tabletop stuff.