[Full Frame] I purchased this lens for my sony FX9 and I shoot with the raw extension. I mostly use the 28/135 F4 sony cine zoom lens. I needed something a bit more wide with a fastest aperture. My dream came true. this lens is excellent, extremely sharp and delivered stunning results. I have tried also the sony 16/35 GM master f2.8.. . but sometimes a real cine lens is better when autofocus(es) has their limitations and when manual focus is required for creativity. highly recommended

[Full Frame] Great lens I have reviewed the first one I purchased. Bought another one for my second camera.

[43.3 mm] I was a little bit skeptical about buying this lens at first considering that I've never heard of Irix before. However, don't let that stop you. This lens is extremely sharp, even at wide-open!!! The footage you can get with this lens at T1.5 is crazy! Not to mention that this lens doesn't have any noticeable color fringing, and is constructed out of a solid metal exterior, and doesn't flare at all when in direct sunlight. If you're looking for a budget cinema lens that punches a lot higher than its price, I can't recommend this lens enough.

[Canon RF] But unfortunately I've heard of some of them coming apart internally. So... hopefully mine lasts, because it certainly makes gorgeous images and is a pleasure to rig and use on set. I'd compare it and cut it with my Zeiss Milvus lenses, no joke.

[21mm] I've been renting cine lenses for years for some of our bigger projects but never pulled the trigger on getting one. I mean, I have the Sigma 18-35 Art (photo) lens and I just can't justify spending 4K on the cine version. But this lens comes at a great price (paid $1,200) which in early 2020, happens to be cheaper than the Xeen primes. Not to mention Canon, Sigma, Zeiss CPs and the rest. -- I've shot a few test shots and the 45 looks very sharp and smooth with no noticeable CA. Focus throw is 180° and the overall feel is solid! - Can't wait for Irix to come out with a couple of more primes.

[11, Rounded] In over 40 years of industrial and feature film making, the Irix primes are my favorite series of prime lenses, favored over the big name lenses that cost 4-5x. They are fast, sharp, have very natural-looking out-of-focus highlights, and the sealing is a bonus for those like us, who shoot a lot of exteriors. Hopefully Irix will soon offer something in the 65mm-85mm range so we can relegate our current short telephoto to the B camera lens set.

[Imperial] It never stoped to amaze me the kind of build this lens has. Nice big and a little on the heavy size. I will compromise well build for fragility, I may also add this has a very nice glass. Overall very satisfied with the lens.

[Imperial] I did a comparison between the Canon CNE 35mm and the IRIX 45mm and if you were not told you could not tell the difference. The sharpness, chromatic aberration, Lens flares, and bokeh looked really similar.

[T16] 8K sharpness, weatherproof, low focus breathing, solid metal build quality, 180 degree focus throw. The list of features go on and on. For the price I have never found a lens like this. I compared for months Sigma Art series, SLR Magic’s, Zeiss Milvus. Personally this lens should sit next to higher price brackets like Sigma Cine, New XEENs, Zeiss CP2’s. Having this lens for a week I can say this lens lives up to every feature. Shooting on my Pocket 6K this thing makes it feel like I have a whole new camera or at least like I’m finally taking full advantage of my sensor. Can’t recommend this lens enough. I plan on buying the brand new 15mm Cine and the 150mm Cine macro all 3 will be the price of a single average priced Cine lens!

[Canon RF] This lens is truly a gem. Superb craftsmanship, sharpness and color rendition., it's a wide angle lens with very little distortion. Pulling focus is a breeze with this lens. With added accessories it has turned my BGH1 into a full-fledged cinema rig.