Tamron20mm f/2.8 Di III OSD M1:2 Lens for Sony Full Frame/APS-C E-Mount

This lens is great especially for the $249 that I paid. What I love most is the sharpness, the lightness of the weight and the close focus ability. I knew about the downsides having watched and read numerous reviews: slow focus, loud AF and distortion. The distortion is auto corrected in my Sony A7iii and also correctable in editing software so it isn't an issue. The AF is the price you pay and is not a deal breaker for me. The focal length of 20mm is plenty wide enough for someone like me that doesn't shoot a lot of super wide shots. The bokeh is pretty good and the f/2.8 is just good enough for some low light situations esp. with an A73 or better.I think this lens is great for someone who wants a decent ultra wide for under $300 and maybe doesn't use wide angles too much and doesn't want to spend money on the Tamron 17-28 or Sony 20mm 1.8 or maybe someone who wants a super light ultra wide with good quality. This Tamron 20mm f/2.8 is smaller, lighter, cheaper and has a much closer focus distance than both of those popular lenses. The macro like capabilities allow for some unique shots not possible with other lenses. You can completely blur out the backgrounds even with an ultra wide focal length! If you're going to be doing a lot more VIDEO than maybe one of the other two lenses are better for you. For occasional video this Tammy is fine.

I bought this lens as a budget astrophotography and landscape lens for my Sony A7iii. Firstly, I had read a few reviews on various sites that the threading would give me trouble attaching it to the Sony A7iii specifically, but I had zero issues with that at all.Secondly, the lens does come with both a rear and front lens cap as well as a lens hood, however the lens hood is fairly cheap. Despite this, the lens hood still helps with reducing flaring and glare in images.There are so many pros to this lens that will outweigh the cons, especially for the cost.Pros - Small/compact, sharp at f/2.8, very affordable, decent build quality, distortion is very mild, close focus distance.Cons - Autofocus is a tad slow and fairly noisy, build quality is decent but at the end of the day it's still plastic, some vignetting at f/2.8.For me, I do primarily photography on it, so autofocus noise is fairly unimportant as I'm not doing film work. A lot of my photos are also on tripods and manually focused anyways, so autofocus speed is less important to me as well.I'd say the image quality I've gotten from this lens is easily comparable with lenses that are twice the cost or more! If you're on a tight budget but still want a full frame lens, go for it!Given the price, this is easily 5 stars!

This lens is what I feel is 4 stars. It does the trick and is a great price for a lens, which was all I was looking for when I purchased it. However, when compared to other lenses I own (my Sigma) this one has some downsides. The outer distortion is pretty noticeable so it’s not the best lens for those who need their lines to stay very straight. If you aren’t too worried about that, then this lens will do just fine. Note the 20mm is 30mm with ASPC crop. It’s still a wide enough lens for some good outdoor shots, but if you want something very wide and have a full frame camera, definitely look for something else. The other downsides: It’s not as sharp as it could be and isn’t the greatest in low light. I think if you’re looking for a budget lens to get some experience with that this is great, but wouldn’t expect perfection from it. I like that it’s economical and does take pretty good photos in outdoor lighting. The autofocus is loud and on the slower side, but I personally like hearing the little clicks it makes.

The lens has awful barrel distortion although my understanding is this is common for wide angle lenses. It’s easily correctable in images with photo editing software.Otherwise, decent lens. Right focal length at the right price. It’s the lens in my collection that I use the most TBH.

i needed a wider angle lens than 35mm for my Sony A7riii. After seeing samples of the Sony G master 16-35 2.8 I decided to check out the price. When I was finished laughing at the $2200 price tag I was left choosing between this $300 Tamron and the $900 Sigma Art 20mm 1.4. I decided to take a chance on this lens since I've had such an awesome experience with my workhorse lens 70-200 2.8 g2.For $300 I expected a mediocre lens that I would regret buying. After returning from a trip to the Smoky Mountains I was blown away by the photos I took with lens. The COLOR POP and contrast really makes the photos look alive. (The 2 samples I uploaded are raw converted straight to jpg)This lens is "soft and creamy" instead of "razor sharp" like the sigma arts and Sony g master lens Which is both good and bad. You can sharpen to your satisfaction in post and still get an excellent image. My 35mm sigma art is sometimes too sharp for landscapes and can make blades of grass and tree leafs very noisy and nasty so It's not an issue for me. At 2.8 it's a little too soft. f4 to f13 is perfect. f16 is a little soft and requires a little clarity and sharpening in post.No the autofocus is not lighning fast like other reviews say but its not sluggish either. I love that it's weather proof but wish It had a af to mf switch on it that is needed for astrophotograhy and very low light shots. You will have to use back button auto focus to eliminate this issue.It's a nifty little lens that can capture some excellent quality images. For the price I can not complain about this lens besides the lack of a af to mf switch on it. Grab it and use the $ you saved to put towards another lens you need!

Hago fotografía de naturaleza y es un lente estupendo, tiene una calidad óptica fantástica, no le pide nada a uno de gama más alta

The wide angle and the macro make for an interesting image. It added versatility to my kit.

May be it's a cheaper in price. But very disappointed with the picture quality. First of all, there is a huge distortion in the image which you need to manually correct each time. 2nd the sharpness is very poor. I felt like wasting my money here and never recommend anyone to go for this lense. Instead save some money and buy a G Master Lens from Sony.

Low light condition makes using this lens very difficult to produce an acceptable work. Like mentioned, it is a good value for your hobby, but not enough to take paid job.

High quality materials, good sharpness, good macro shots, good super wide focal length