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When do you see the difference between RF lenses that are 2.8L vs 4.0L

Started 9 months ago | Discussions thread
paratom Veteran Member • Posts: 3,019
Re: When do you see the difference between RF lenses that are 2.8L vs 4.0L

Besides the obvious fact of f2.8 and the ability to more background blurr, there also are other differences.

You can google 2470 vs 24105 comparisons and you can see that the 24-105 has more distorsion (which needs to be corrected in software and which can influence IQ in the corners). Also there can be differences in sharpness.

I compared the 70200 rf 4.0 vs rf2.8 and you can search such threads.

In this case both are equally sharp, but you can see the difference in subject isolation f2.8 vs f4.0. Also the 7022/4.0 at 4.0 vignettes more at this f-stop than the 70200/2.8 at 4.0. For indoor sports the f2.8 helps me also to keep iso in an acceptable range even when shooting at 1/1000.

For portrait I feel f2.8 does make a difference.

Maybe its also a question, if a lens should replace primes or if it should be combined with faster primes.

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