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Anonymous11/01/25, 17:04No.4479555
Can UV filters help to reduce purple fringing?
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Anon11/01/25, 17:14No.4479559
UV is already well filtered by the lens and sensor but a UV 2A filter worked for this guy https://www.dpreview.com/forums/post/51786560
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Anon11/01/25, 17:20No.4479561
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Anon11/01/25, 18:12No.4479572
Why would adding some optically passive glass help the lens to focus colours on the sensor better than without it? If the CA issue was about coatings wouldn't they just coat the front element? And as far as I know, they use aspherical elements and special glass elements with high refractive index to correct for CA.
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Anon11/02/25, 05:55No.4479736
Different wavelengths are refracted at different rates. Manufacturers sometimes use different materials to even it out. But more glass makes a lens slower. And with the magic of digital editing, the problem is solved by
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Anon11/02/25, 14:50No.4479843
but this looks pretty
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Anon11/02/25, 16:44No.4479875
Just paste the green channel's edges into the blue and red channels.
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Anon11/30/25, 03:47No.4485444
What even causes that?