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Debating between Sigma 20mm / 24mm / 35mm Art

Started Mar 14, 2019 | Discussions thread
ffabrici Senior Member • Posts: 1,353
Re: Debating between Sigma 20mm / 24mm / 35mm Art

I have used all 3 lenses discussed on 5DIV and 5DsR and I own the 20ART. The newer the ART lens construction is, the more consistent is the AF on Canon bodies.

35ART is a fantastic lens, optically almost on par with the Canon 35L II but it is the oldest ART lens and the AF is unfortunately inconsistent unless you are lucky to find a consistent copy.

24ART is also fantastic optically but is unfortunately suffering from coma like the Canon 24L II if you want to use it for astro. AF on the single lens I tested was very consistent and I haven't seen a huge debate about the AF problems like with the 35ART.

20ART is slightly sharper than the 35ART in the center, but it obviously has soft corners wide open due to the wider angle of view. The AF is very consistent and I use it along with my 35L II and 135ART as the preferred FL's that I need primes for. It suffers from extreme corner coma, which disappears at f/2.8 like the 24ART.

I would recommend both the 24ART and the 20ART, mainly because their AF is consistent in addition to the excellent optical performance that you get from all ART primes.

Good luck with your decision.

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