[5 x 5 x 4.8"] I was skeptical at first. I had never used an MFT lens before and seeing how cheap this thing was scared me a bit. After placing it on my Cine Camera I was surprised at how sharp everything was and how close I could get to my subject. The built in aperture ring is incredible too.

[FUJIFILM X] This is an all manual m mount lens for a Canon eos m camera. i use it on my Canon M50. i find it a fun and very clean imaging lens.

[72 mm (Front)] Great low priced lens, well made - good weight and feel to it.
I love manual lenses, so for me this one is great. Used with the GH5s, (so as a 24mm). Focus and aperture rings are very smooth.


Defiantly would recommend!

[f/2.8] I am very much pleased with how quickly I received this lens! It was exactly the piece of equipment I needed to finish my setup for this upcoming wedding season and fit on my Canon M50 body with ease. The lens also came in such good quality, despite it being used! I would recommend B&H Photo for all of your camera part needs.

[Manual Focus] I really like the lens. Good resolution, good color reproduction. A small flaw is very easy to move the diaphragm ring, be careful not to accidentally change the diaphragm.

[72 mm (Front)] Really nice lens. Great build quality. Camera will not take a photo nor record video unless you set your camera to "shutter release without lens" so be sure to do that first.

[Manual Focus] I've owned numerous Zeiss lenses over the years and they have always been stellar. I might have given this 4.5 because the aperture ring isn't stiff enough and will sometimes move but it's optically fabulous. At normal working distances it's very good/excellent right to the corners from f4.0-11.0. Center is razor sharp throughout. Unless you're doing big enlargements (which I do) it's good wide open too. I shoot full time for my living so my gear is important. Not sure how it would be wide open in the corners for something like astrophotography. I don't use it for that.
It's beautiful aesthetically, especially with the matched hood. Additionally I had to give it back a half star for it's performance shooting infrared. That's a niche thing but I shoot a lot of infrared. I use it on Fuji bodies (X-T5) and Fuji doesn't have much in ultra wide that is both good with standard photography AND infrared.

[72 mm (Front)] I bought this mostly for my infra red camera, intending to leave it in place as much as possible. Now, after experiencing the terrific sharpness and contrast, I'll probably use it on my other cameras for my wide angle shooting.

[5 x 5 x 4.8"] The opteka 12mm f/2.8 Lens for Fujifilm is a stunningly sharp lens for your money. Built like a tank. The image quality is far better than one would expect for a lens of at this price point. In a word excellent!

[f/2.8] I really like this lens!
I had a 7artisans 50mm F1.8, but this Opteka 50mm F2 lens is better.
I got it in Fuji X-mount. It fits a little bit tightly on my X-T3. but almost loosely on my X-E1 (still a good fit). I have another Opteka lens and also a Meike lens, and they both fit this same way, so it's normal.
Focus ring and aperture ring turn smoothly through their ranges. Aperture ring has no click-stops but I can live with this. Infinity focus is before the infinity marking on the focus ring, but that's OK with me.
Center sharpness is very good F2-F5.6, but diffraction softens this beginning at F8.
For good sharpness across the APS-C frame you really need to stop it down to F5.6 - F8, but for most of what I do, I don't really need sharpness across the frame.
It delivers very good contrast and presence (hard to define this but it's a good thing).
Highly recommended!