Color fade in picture

Hello,

I own a EOS Rebel Xsi 450D. I’m getting a red tint on the right side of the picture. Its very slight. With a normal outdoor picture you can’t tell. I only noticed this using a light box I made. I took two pics. Both pics are taken from the top of the light box. One facing the front of the box, one facing the back. Same lighting, same settings. I changed nothing. If you look at the pics you can see the difference in the shots. The right side has a red tint to it. Is there something wrong with my camera, or is there an adjustment I could make in the settings?

Thank you,

Alec

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Just looks like bad/uneven lighting (light source) to me.

Sorry, I must have not been clear enough. The only difference in the two shots, is my cameras position. I simply turned the camera 180 degrees. The lighting stayed the same, and the shirt didn't move.

What kind of light? Some lights emit at certain frequencies and you get cycling colors.

Now I may be seeing things, BUT on the top image there is a slightly red hue on the right and slightly green on the left. This is opposite on the bottom image (which is how it should be if the second was shot 180 degrees different compared to number 1).

How many light sources do you have? What type of lights do you have? What was the white balance set to? Looks to me like uneven lighting, but I'm not positive. Can you try taking some more picture using the box without anything in it?

Ecosse wrote in post #9941771
Now I may be seeing things, BUT on the top image there is a slightly red hue on the right and slightly green on the left. This is opposite on the bottom image (which is how it should be if the second was shot 180 degrees different compared to number 1).

How many light sources do you have? What type of lights do you have? What was the white balance set to? Looks to me like uneven lighting, but I'm not positive. Can you try taking some more picture using the box without anything in it?

There is uneven lighting..... But that's only because it's more obvious in uneven lighting.

Let me try to explain it a different way.... Pretend you are taking a picture of a landscape. If you take a pic right side up, then turned the camera upside down and take another one, would those two pictures be different in color? If the sun where on the right side of the landscape, would the sun be more red or more green depending if the camera was right side up or down? That's what my experiment is proving to be whats doing. Same idea. Im not changing the lighting. Im only moving the camera 180 degrees. No angles. 180 degrees.

I TURNED THE 2ND PICTURE RIGHT SIDE UP TO SHOW THE DIFFERENCE. IT WAS ORIGINALLY UPSIDE DOWN.

You probably shot under fluorescent lights at a shutter speed faster than 1/120

themadman wrote in post #9941548
What kind of light? Some lights emit at certain frequencies and you get cycling colors.

Sdiver2489 wrote in post #9942068
You probably shot under fluorescent lights at a shutter speed faster than 1/120

I will re-ask the question from above. What TYPE of lighting were you using?

Alec,

What we're saying is that different light sources have different "cycling" frequencies. So while our eyes are too slow to discern the variations, making it appear as though it's "even or constant" lighting. In reality, it flickers (sometimes brighter, sometimes dimmer, sometimes different colors!). This is true of fluorescent lighting, especially since many light bulbs these days are CFLs.

Cameras are able to capture this effect. Depending on the bulb but if it's a CFL, then usually speeds of 1/100s and faster, the images will result with strange colors and very uneven lighting. It doesn't matter if you turn the camera left, right, 180, etc...

Hence, it's the reason why everyone is asking you what your light source is, and the reason why my original response was what it was.

Not using florescent lighting. Tungsten's. It is definitely my camera. I just borrowed my friends Canon Rebel XSi. Just like mine. Did the same shots. One right side up, one right side down. These two images are from my friends camera. There's not much difference in the pictures. Now look at my first post, and look at those pics from my camera. You can see one of them has a stronger red on the darker side of the pic. I also used his lens on my camera. Same problem. So I'm certain it's my camera. Is there any way to calibrate the camera itself, or is it just a lemon? You can also see how blotchy my pics are compared to these. There are drastic reds and greens in my pics.

Is direct light to the lens for long periods a problem? I sometimes leave my camera just sitting in my light box with the lights on and the lens cap off. Could that be a problem?

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Woah there slow down your rushing to conclusions.

Can you post these photos with EXIF data in tact?

If you flipped the camera 180 degrees, then we should see the red tinting switch to the other side. I am seeing the same results with both cameras, so it might be a caused by lighting/shadows. Are the lightbox materials identical on all sides, as in reflective qualities, matte, etc?

Just throwing something out here... Does the problem get worse with longer exposures? I had problems with long exposure astrophotos that was amplifier noise (but it scaled with exposure time).

Did you shoot in any auto or semi auto mode? Simply put could be metering issue (or expected metering issues) if you are shooting in Av, Tv or Auto modes.