Konica UC Fish-eye Hexanon AR 15mm f/2.8

Canon 15mm EF Fisheye for my 5D Mark IV Bought this fisheye lens for taking extreme wide angle images of interior spaces. It works perfectly, especially when I combine it with DXO PhotoLab for auto correction of perspective (when required). This works much better that Photoshop. I also have a 14mm and 17-40mm zoom, but none of these are as good as the 15mm fisheye. Rented the completely useless 8-15mm fisheye zoom, but this is one of the worst ideas Canon has had for a lens -you go from a small circular image to a full frame fisheye (like the 15mm), so of no use between the 8mm and 15mm settings, as you get cut edges. Canon designers had no clue about proper use on the 8-15mm zoom. Canon should bring back the prime fisheye 15mm, it is much better than the the rectilinear 14mm. It is WAYYYYYYY sharper than my daughter's Nikon 16mm on her D850 body. Get one of these lenses used and enjoy the giant increase in perspective for your images. Remember that it is easy to get gimmicky pictures with any fisheye lens, so watch out for your subject matter, compose properly (a lost art with DSLRs), place straight lines in a way to enhance them and watch out for your feet or tripod at the bottom of the pictures.Read full review

One of the sharpest corner to corner fisheyes ever This is a specialty lens that may not be for everyone as the images it produces are distorted but it is sharp, is very well built and is no longer in production and so finding a used version in good condition is getting more rare. I am fortunate to have found a mint version and have been using it in a variety of circumstances with super results. I don’t regret the purchase but if you are on a budget you may find better uses for the money

Exceptional Fish Eye, Solid Build, Sharp! Solid, sharp diagonal fisheye lens that has been discontinued and is hard to find used. Couldn't be more pleased with my new glass!