Canon Ef 28Mm F/2.8

[f/1.8] The lens provides picture quality that is definitely significantly better than Sony FE 28mm F2.0 and even better than the Canon EF 28mm IS USM. My copy is optically almost perfect lens. On the dark side we can find not so much - the weight and dimensions might be a little bit less, and there is some quite moderate field curvature that is leaving completely after aperture down to f4 and more. Generally, that is an amazing lens.

[Empty] A perfect fit for my new Canon EF-S 17-55mm f/2.8 IS USM Lens!

[Full-Frame] I have the Canon EF 16-35 f/2.8L ii lens and it is a fine lens but I have never been completely satisfied with the sharpness. After reading a lot of glowing reviews about the incredible sharpness of the EF 16-35 f/4L IS, I decided to buy one. Wow, this is a nice lens!!! Extremely sharp right out of the box (no micro adjustments needed), focus is lightning fast, colors and contrast are outstanding, and handling is excellent. The IS is the icing on the cake--it makes taking super sharp photos in any light a snap. Love this lens!!!

[0.09 lb] It's a great filter at a great price. I got mine during a sale so it was even cheaper. I have briefly used it with my Canon EF 100mm f/2.8 L Macro lens and I don't see any difference in image quality.

[+4] Use this close up lens on my Canon 60mm f/2.8 EF-S Macro. Works best with 50mm to 100mm lens range. You'll love the close up pictures you will get of flowers, bugs, small stationary items. Very fun close up lens to have.

[Aluminum] I've used it with the Canon EF 200mm f/2.8 and TS-E 135mm and it works like a charm. Beautiful construction. Solid. Would recommend it.

[112 mm] I am pairing this with the Canon EF 24mm f/2.8 IS USM with excellent results. The EF 24mm does not extend or rotate when focusing, making it an ideal choice for use with the 1.33x adapter. Used with my (yes, old school) BMCC I get a 40mm horizontal anamorphic field of view which is really very versatile. Also, the lens image stabilization is nice for handheld work. I did add a Smallrig lens support on rails, just for peace of mind, as the lens with adapter is fairly long and front heavy. It flares nicely if you want it to and sharpness and contrast, to me, seem more than adequate - even nice. When looking at options and seeing some of the wacky rigs folks work up to shoot anamorphic, this is really a much better solution.

[Zoom Gear] The lens has been bought to use with Canon EOS 40d.My choice was between: - Canon EF-S 17-55 f/2.8 IS USM - Canon EF 24-105mm f/4L IS USM - Canon EF 24-70 f/2.8L USMI choose Canon EF 24-70 f/2.8L USM, mostly because this lens has the best picture for me.If I am a reporter, I would choose EF 24-105 f/4L for the wider focus range and IS.If my god is sharpness and I really have a need of a wider angle everyday, I would take EF-S 17-55 f/2.8 (but no L construction and no possibility to use on the full frame), BTW many people stating that this is the best everyday choice for Canons with APS-C size image sensors, I see deep reasons for these statements.These too lenses are really nice and additionally both have IS, but the picture you receive from them is not so artistic comparing to EF 24-70 f/2.8L, this made my choice.Canon EF 24-70 f/2.8L USM strong sides: - nice picture; - high sharpness; - universal zoom range, including range for portraits; - really fast focus; - strong L construction; - the lens hood sold with this lens (it's huge, but really works, it's one of the best).Weaknesses: - no IS (if it matters for you in this focus range); - big and heavy.--....The lens is perfect, has no back or front focus and works with my Canon EOS 40d flawless.

[58 mm] Well machined adapter that fits perfect on the Zeiss eyepiece and has precise filter threads.   I experimented with several lens/camera combinations and the Canon “pancake” lenses seemed to provide the best field of view without vignetting.  The closer the diameter of the front element to the width of the eyepiece lens the better the result.  The EF 40mm/2.8 STM on the full frame, the EF-S 24mm/2.8 STM on the APS-C, and the EF-M 22mm/2 STM on the M series (but the Macro 28mm/3.5 IS STM also worked well).   I prefer the Canon M6 because of the focus peaking feature to optimize focus, and the lightest weight configuration.   The Zeiss adapters come in only three sizes so you will need a filter ring adapter to match your lens.

[Sony E] Picked this up as what I hoped to be the best of the budget EF to E mount lens adapters. So far I've tested it with a handful of lenses and have seen no issues with any of the native Canon lenses I've tried: 24-70mm f/2.8L works great for AF, aperture, and Sony IBIS, as does 16-35mm f/2.8L III. Adapted lenses are more of a lottery - Zeiss Planar 50mm f/1.4 T* on a C/Y mount is great with Focus peaking on the A7RIII, however a Pentax Super Takumar 135mm f/2.5 causes the Sony to frreak out and flash the screen at random when displaying live view (menus display fine. The same adapted lens works perfectly on a Canon 5DSR. So, for the money I'd say it's good. Native EF lenses seem fine. More than 50% of my adapted lenses seem fine, but there are a few hiccups which are probably par for the course at this price.