Camera Labs

I know how cromatic aberations are formed & what kind of light boosts the chance of getting them. Is underexposing a photo stoping a certain amount of CA to appear? Of course,in a RAW software you can increase the exposure to normal,but it could affect the general quality of the photo. How much underexposing I could apply without harming the image quality?

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Gear: Nikon D80, 18-105mm, 35mm F/1.8, 85mm F/1.8, SB-600
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Razvan,

I do not believe that underexposing will eliminate CA. CA happens before the light even strikes the camera sensor, so exposure value should not have an effect on it. If you underexpose and image and then brighten it in post-processing, you'll probably see the same CA, but with overall lower image quiality due to the brightening. How much you can brighten before having a noticeable loss of quality will vary from image to image.

Your camera manufacturer may provide software for removing CA. In the case of Canon, Digital Photo Pro can apply CA removal that is tailored to the particular lens used ot take a given photo, and it does a pretty good job. Not sure if Panasonic offers something similar, but it might be worth checking.

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Canon 40D
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...and too much other stuff to mention...

I wasn't thinking of a brand in particular,just as a theory...
Then, I guess it's up to the polarizing filter & additional CA remover tools to get things done.
Thank you for the reply!

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Gear: Nikon D80, 18-105mm, 35mm F/1.8, 85mm F/1.8, SB-600
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I have one more question...then why some lenses are more sensitive then others to CA ?

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Gear: Nikon D80, 18-105mm, 35mm F/1.8, 85mm F/1.8, SB-600
Visit my work here

I sincerely doubt that a polarising filter will make any difference to C.A.

It's down to design and cost. The perfect lens doesn't exist so all camera lens designs are a compromise. The number of lens elements, which types of glass to use and manufacturing tolerances are all relevant. The videos available via Canon's Virtual Lens Plant might be of interest if you have a little time to spare.

Bob.

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OM-D E-M5 + ED 12-50mm, H-PS14042E, H-F007014E, L-RS014150E, M.ZUIKO DIGITAL 45mm 1:1.8.
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