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RF 24-105 F4L horrible purple fringing

Started Apr 28, 2021 | Discussions thread
thunder storm Forum Pro • Posts: 10,139
Re: RF 24-105 F4L horrible purple fringing
2

phatgreatwall wrote:

the fact that an L lens exhibits such bad purple fringing is a shocker, i would've thought L for the price would be at least better than my iphone.

No, it's not shocking at all.

1. You just should have stopped down. I really don't see a reason to use anything wider than f/8.0 for this shot.

2. If you didn't want to stop down you should have used a prime.  A prime also allows you to shoot at a bit wider aperture than f/4.0 giving you more separation still being stopped down enough to keep the fringing very low.

3. You should have exposed for the highlights

4. A polarizer filter would have helped a little too in this case

Look, I can imagine 2, 4 and even 3 are too much hassle, no problem. But 1 is just user error. Yes, it's an L lens, but it's only 1200 euro, and most important: it's just a zoom, and therefor it should be treated just like that.

There are some primes with (close to) zero fringing wide open, but at the 24mm focal length even expensive primes need to be stopped down a little to avoid fringing.

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I love 50mm (equivalence)

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