Sigma 20mm f/2 DG DN 'C' lens review with samples (Full-frame & APS-C) 

Pricey

too expensive for an f2, must be max 549.

@@TechAddict8642 agreed. it should 500 euros in europe and we got a deal. otherwise the sony g is not that more expensive. while tamron is the super cheap option with a non moustache distortion.

I was waiting around 550.......😅

Love Sigma lenses but that's far too expensive for the specs.

Why is it underrated? Plenty of use cases out there

I used to love my 20mm 1.4, until I got a 35mm 1.4 and I never used the 20mm again. Sold it and never missed it.

@@jeroenvdw Same for me, I don't like 20 and 24 but it's really subjective.

I've got myself the 24mm, such a beautiful lens with fantastic IQ. Too bad this line does not have the 28mm!🍻

@@jeroenvdw is 20mm good for real estate photography?

Sony's AF-C is generally more reliable than AF-S.

@@shang-hsienyang1284 not in low light situations. Or, when you have to focus on a single-color/flat surface, you can't focus properly.

@@hoatd1993 Plus it gives you a good idea of its Eye AF speed since Eye AF is practically useless in AF-S.

Do you think it's better? I mean, all the other specs are more important than a third of a stop.

@@k1k13004 The Sony 20mm f/1.8 G is definitely a better lens.

A little 200$, just a few pennies........ for some minor differences

I would be interesting to cross compare those, since thats basically APS-C equivalent of 20mm F2. According to rumors prices are going to be not too much different,but Viltrox looks like a significantly bigger lens.

@@tomapaunovic Indeed. Viltrox 13mm is a bit bigger, as well as little heavier. If weight is a factor, then there's Samyang AF 12mm f2, but it's not as good as Viltrox, IQ wise. According to few articles and some pictures I saw from other RU-vid creators, Viltrox 13mm is quite sharp, even wide open. I would really like to get my hands on it soon. It should retail for under 500 bucks, but I am not sure how that's going to translate to serbian market ;)

@@durzog3668 Usually it translates 1-1 in EUR with VAT included :) I'm always a bit disappointed when the APS-C lens is bigger than the FF equivalent, but maybe Viltrox will provide some outstanding image quality to cover for a bigger size. At least the price will be cheaper than FF equivalents.

@@tomapaunovic True, it is a bit hefty. There's a french fellow here on RU-vid, he made a comparison video between the Viltrox 13mm f1.4 and Samyang AF 12mm f2. Just turn on translation and watch the video, you should get the idea :) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-HOGvee1GaGo.html

@@durzog3668 good job Viltrox, looks a bit better in almost every area, according to that review

To add to your comment, for those who are on the new A7IV, the Sony G lens is also on the list for working with the new focus breathing correction feature. Another reason to buy the Sony over the Sigma. (Shame, because I love the look of these little sigma lenses!)

@@danfarmer_photo also, for those who are on older Sony like a7M2, the Sony-branded lens works much better than third party ones

Current price in Europe for Sony is 1020 EUR and for Sigma 670. It’s not really marginal everywhere.

I prefer the sigma rendering

Sigma over Sony any day. Ive bought both recently thanks to positive opinions about F1.8. Sigma costs me half of what I payed for Sony and I didnt see any differences without 150% zoom. Definitely not worth the price.

As soon as they get the RF mount sorted in sure all their mirrorless lenses will be ported

That's a shame for Canon for not letting third parties to make lenses. Not Sigma's fault.

@@networm64 they making bank. Why would you wanna give that away

I don't think that Canon will ever allow third party, at least not in near future. They've effectively banned Samyang lenses with some of the latest updates.

looks like third party RF mount lenses are starting to appear. The Viltrox AF 85mm f/1.8 with RF mount has already been reviewed by Christopher. It's not a case of Canon not letting other companies make them.

1099 vs 699 where I live.

nah give me the metal build

And plastic doesn't make your fingers freeze in winter :) My Fuji X-H1 got sooo cold.

they usually do.

The art lens is huge! I bought it, but sent it back when I saw its size. It really is too large and heavy for me as a walk-about lens, though if that is not a concern, or one needs the extra stop of light, I imagine it is a good lens. I am seriously considering getting this f2 version. I have the DG DN 65mm and Christopher is not exaggerating about the build quality and sharpness of these Sigma lenses.

@@Gynra wow thank you man i really appreciate it honestly i only care about bright f-stops at portrait focal lengths so i definitely don’t need it that bright it was $700 on sigma’s official website & i didn’t know exactly how big it was tbh on photos or videos i can hardly tell that’s the only reason why i was considering it but i’ll definitely jump for the f2 after it releases for sure now 😅

Hi. I was also interested in this lens for video, but two things are putting me off. Firstly the lens suffers from a lot of focus breathing. The image size changes as you change focus, which can be really disturbing. Secondly, the image corners are really dark right down to f5.6. On many video cameras, eg my Sony Fs7, and I'm sure many dslr's or mirrorless cameras, this will not be compensated for.

IMHO, apart from vignetting and distortion issues, it looks better than Nikon 20mm 1.8

Check out his review of the Z 20mm and you know it :)

The Sony is $900 RRP

yup especially when they go on sale

Clearly? OK so I need to change my glasses!

@@networm64 he even says it in his reviews. Sony corners are a little soft at 1.8. Sigma is sharp at f2.

@@sulev111 OK I think you need to watch in depth reviews like Dustin Abbott or even a comperehensive comparison between these 2 lens done by Tony Northrup recently.

​@@networm64I think the best test is to try it out, not watching how Tony Nortrup taking pictures of a brick wall. 40% more expensive lens is slighly better, who would have thought...

Blame Nikon and Canon for it...

@@ΜανωληςΣτρατακης yup, too greedy

Definitely not “purely down to the puny Sony mount.” The Sony 20 1.8 G doesn’t have nearly that awful of vignetting. This is absolutely on Sigma’s design approach on E mount. They don’t try particularly hard to control for vignetting and distortion within the optical design anymore. They’re designing their lenses with the assumption that the end user will just correct with in-camera correction profiles or through post processing. I have moved away from Sigma lenses specifically because of this. If I remember correctly, even the beloved 24-70 had bad distortion and vignetting on the wide end. This is just not great lens design.

Not this mount size propaganda again ;) It's been debunked many times, look at other lenses and options, compare 50/1.2GM to other bigger ones from Nikon/Canon etc. While larger mount might give you SOME head start when designing wide lenses, it doesn't mean it supersedes the quality and other parameters of the design itself. Here it's quite obvious Sigma chose to keep the lens compact on comparable level as other ones in their "i" line and looking at other reviews then maybe shouldn't have. Personally I don't mind a bit of vignetting, but the Sony 20/1.8G is available at this FL, same size, probably better in every regard (basically GM quality in G body for G price) - that doesn't happen often, Sony probably stumbled upon really good and not that expensive design, and I'd take that more in the account than Sigma did, that's all. I understand people will like it even for the form, but it'll always be with asterisk compared to 20G for 3/4 of the price. And personally I don't care, I just sold my 20G, have no need for 20mm after all with 14GM+24/1.8 Samyang.

@@devondesroches this