Two of the same cameras produce different image when set to the same settings?

[alexdrake]

Hi!

I have a Sony A7III and recently rented another one for a project. However, when testing the cameras side by side I noticed that one had a more red tint than the other. I put the two cameras in front of a white paper, same distance, lens and white balance and still one seemed to have a more red tint. I tested this several times and still the same result.

How can this be?

 

[justinwonnacott]

an inconsistency in the test setup? Were the cameras mounted side by side? Or replaced onto the same tripod? Reflected colour on one side from your shirt or something else? Were both cameras set identically? Did you quantify the colour shift to see how much it is with the eyedropppers in PS?

 

[Mark S Abeln]

Can you upload some sample images here?

 

[Tuloom]

do a factory reset on both.

 

[Tim Reidy Productions]

If both cameras are not on default specs, they could have different specs one could be more vibrant, one could be set up in monochrome. for example.

try to get both bodies there first or just post process afterwards.

 

[ttran88]

Do they have matching lenses? Lenses play a role in color and exposure (transmission).

 

[alexdrake]

yep they had the same lens

 

[alexdrake]

I marked out a spot where the camera stood so when I changed camera they were in the same spot. Yes I did back away so my shirt would not reflect any color and resetted both cameras and had the same settings.

 

[creepy.sol]

[No message]

 

[BBbuilder467]

Hi!

I have a Sony A7III and recently rented another one for a project. However, when testing the cameras side by side I noticed that one had a more red tint than the other. I put the two cameras in front of a white paper, same distance, lens and white balance and still one seemed to have a more red tint. I tested this several times and still the same result.

How can this be?

I use 2 identical bodies and will fine tune the white balance depending on the season. If someone borrowed them, the one with the adjustment would look more red. I might even forget I changed it.

I did that to my daughter's camera and she had to do a factory reset. I couldn't explain what I had changed over the phone.

 

[alexdrake]

Raw.

 

[alexdrake]

more red




more green

 

[alexdrake]

red tint




green tint

 

[Mark S Abeln]

Thanks for uploading the photos, but unfortunately, the first one lacks Exif data, which is needed to troubleshoot your problem. Some image editing software strips it from the photos.

Did you happen to photograph these under fluorescent or LED lighting? These kinds of lights—unlike daylight or incandescent lighting—will shift hue because of alternating current. You'd likely get different colors on subsequent images even with the *same* camera.

 

[alexdrake]

Dpreview wouldn’t let me upload the raw-files

And yes they were shot under LED-lightning, but in all the images I’ve taken, one camera is always more red and the other one more green. If it was because of the LED, shouldn’t they both shift color and not always have a red/green hue?

 

[onlyfreeman]

Could you use one lens on both, after a factory reset and upload the raws somewhere?

 

[Mark S Abeln]

Dpreview wouldn’t let me upload the raw-files

JPEGs are fine, it is just that one of them has metadata embedded in it, and the other does not. "Metadata" is camera and image data embedded by the camera in the image and is important for troubleshooting. Metadata has to be explicitly stripped out of an image by editing software.

And yes they were shot under LED-lightning, but in all the images I’ve taken, one camera is always more red and the other one more green. If it was because of the LED, shouldn’t they both shift color and not always have a red/green hue?

You are right. if it were the lighting, the coloration would vary with every image.

 

[Marek M]

Hi!

I have a Sony A7III and recently rented another one for a project. However, when testing the cameras side by side I noticed that one had a more red tint than the other. I put the two cameras in front of a white paper, same distance, lens and white balance and still one seemed to have a more red tint. I tested this several times and still the same result.

How can this be?

Not sure what Sony call it. It is Canon's way of calling it. The most likely reason when shooting RAW

 

[zackiedawg]

You should check the settings deeper in the rental camera as someone may have adjusted the white balance offset. Each of the WB settings has the ability to adjust the default settings of the white balance - right-clicking when in a particular WB setting will bring up a color chart box with a cursor dot that can be moved to adjust the camera's default to skew in a certain direction...when renting a camera, it's possible someone made a deeper settings change that others are unaware of.

 

[justinwonnacott]

Do you have multiple exposures showing identical problems.? The lighting is discontinuous and the shutter speed of 1/50 makes be showing flicker banding. Does this still happen in daylight?