Sigma Art 20mm f/1.4 DG HSM Wide-Angle Lens for Sony E-Mount 412965

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Very Nice.

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This lens is great – love the focal length and the sharpness of the image even when at f1.4 — however the Sony mount version is EXTRA long and large – which is rather annoying since it is a prime lens. They should have reworked the system instead of building a mount into the lens.Another con is that the lens hood is not removable, making it hard to add a ND filter onto this lens.

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Great lens. Very sharp and clear at 1.4. Fast af. Better than all the Canon L glass ultra wide I’ve used. 17-40 f4 and 16-35 2.8. At 1.4 the Sigma is producing clearer pictures than at f4 and f2.8 from the Canon glass.This lens isn’t for you if you on of the people that believe sharp glass is bad because it’s produces too much detail.Image quality is at same level of the Sigma 35 f/1.4, 135 f/1.8 and 105 f/1.4I am use to holding big and heavy glass so the weight and size doesn’t bother me. It feels very light.My biggest complaint is the lens cap. Sigma should’ve added a locking mechanism to the cap, similar to what Canon has on their 8-15 f4 lens. I find when its in my bag the cap from it will fall off. I might consider putting some velcro on it.I tested this on Sony a7r iii and Sony a6000.

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Super heavy

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I purchased this lens in another store and returned it because the AF was too slow.I imagine it’s great for photography but I shoot videos. I did several test and it was slow to capture the subject coming into frame. I did the walk back and forth towards and away from the lens, it would lose focus every time. Walk across at a normal pace, it wouldnt even pick me up. Pop into frame, and just wait a while until it finally got me in focus. If I’m using it on a gimbal, the slow AF will be a problem. Why? Well…The crane 2 handled its weight well with the a7riii and the a7iii. No problems balancing it without the follow focus. With the follow focus it became too front heavy and even though I could still balance it, the motor couldnt handle the weight to make all the movements. I could no longer do the vortex shot and several other panning shots. So I would have to use the lens without the follow focus.I’ve been using the Crane 2 for a while and can balance any lens and camera fast. If you’re new to gimbals, I see how you may have trouble getting this lens right. But again, if I have to rely on the lens itself to get the subjects in focus while I use the gimbal, I would have alot of out of focus shots.Another problem I found, the round glass wont allow to add filters to it.On the plus side, it’s a beautiful lens.Let’s in alot of light.Bokeh is great.Theres barely any warp. Horizontal lines are almost completely straight. You would have to be really looking for warped lines to notice. But it does a great job with that.

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I have been using this for past few weeks and have noticed that even at f1.4 the images are very sharp, produces rich color and no color cast. Wide enough to cover a nice view that you see in the images i shared. No distortion and build quality is amazing, though a bit heavy but hey nothing comes cheap specially when you talk about quality 🙂 I can recommend this lens for all landscape photographers or astro photographers!!

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A nice lens for star photography (better if I remembered to adjust the white balance…).

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Build quality feels solid and the focus motor is super quiet. An uncommon combination of an angle this wide and low aperture makes so much possibilities like close perspectives with shallow depth With plenty of background. It’s big and heavy though. You won’t be able to screw on filters with this lens as the hood is built in to it. Fun lens overall!

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Pros: Very fast focus, sharp imageCons: heavy