As a photographer I can always recommend Canon. This is a great product and it really has only few downfalls to it.1. AF is very slow, so busy scenes are not for this product2. With adapter to use normal EF-S lenses the AF slows down even further3. EF-M lens availability is very limited, which brings you back to the point 2 above.But you get bang for your buck if you can live with the above. Digic 5 processor, touchscreen and the great Canon quality if you shoot more portraits, night scenes and landscapes in general. If you have few canon ef-s lenses you like and need cheap but great EOS experience on the road while not wanting to carry e.g. heavier 6D, 5D bodies... then this is great way to go!

This is nearly a flawless lens. AF performance is excellent: fast and very accurate. Low light AF performance is exceptional. Color is slightly dry, but good saturation - similar to Portra film.. Sharpness is world class - better than any lens I've ever used and I've shot most of the medium prime lenses in both Canon and Nikon systems. The wide open performance is unreal - it is sharper at 1.4 than most other lenses stopped down. Bokeh is excellent with rounded highlights and creamy backgrounds. Flaws are primarily due to weight, length and cost -- all of which are roughly equal to the 24-70L II. Doesn't matter - The image quality is just so incredibly impressive. The combination of critical sharpness at f/1.4 with smoothly blurred backgrounds gives images a 3D quality. This is the best lens I've ever owned.

I use this extender with my 70-200/2.8, 300, 400, and 500mm tele lenses for wildlife shooting (hobby). My cameras: 7D, now upgraded to a 7D II, and a 5D III. Important in particular for 2x TC users: both latter cameras still provide an active center field autofocus with lens+TC combos that have an F/8 initial aperture. In particular every birder knows: you can't get enough focal length. And if you don't want to invest in - and carry - a super huge & heavy 800mm lens, you have to have TC's in your backpack. I use Canon's very good 1.4x MK III TC frequently, and less frequently this 2x TC. Many reviewer's here explained already the 2x TC's technical pros and cons in detail. In real life, according to my experience, you can break it down to those three items that really count:(1) images lose visibly sharpness and get softer, in particular in the edges (full frame) but with re-sharpening during post-processing (or sharper pre-settings in your camera) you can get acceptably good results (= you still can see feather/fur textures) IF...(2)... there is enough light available (!!) for a - with many lenses - quite slow combo AND...(3)... the object does not move too fast and unpredictable, because AF will work as sluggish as an old digital compact camera (but accurate with a carefully micro adjusted camera).This may also be important for you:- Oh no, you can't combine Canon's Mark III 1.4x with 2x TC's to shoot man's first footsteps on Moon from Earth. Canon prevented this mechanically, not only by some sort of pins (you could easily remove): the whole TC's do fit because their lens systems extend from their bodies and would collide before their bayonets snap together. Don't complain, be sure that the image quality of such combos would be too lousy anyway for modern high res sensors. If you need extreme focal lengths check if digiscoping (mostly without AF) would be the better solution for you.- Some lenses do not fit with Canon's Mark III TC's because, again, their extended lens systems would literally collide with the back lenses too close to the bayonet. The example in Canon's lens line that I presume is most prone to such a disappointment is the macro lens EF 100mm/2.8 L IS USM. So check the TC's compatibility with the lenses you want to use it with before you hit the order button. Btw you can pimp your macro's magnification by using extension tubes, plenty of good ones with full electronic supply of AF and aperture are available.Final word(s):Given the fact that a 2x TC is always a quite extreme optical compromise, the Canon engineers did a decent job with the Mk III version. But do not expect any wonders. An EF 400/5.6 lens will always be much sharper at 400mm - and focus much quicker - than a 70-200/2.8 II + 2x TC III combo, I can tell from my own experience.Those who just start with the TC business, I'd highly recommend to go first for Canon's 1.4x TC Mk III. It provides less reach but much better optical and AF performance. In practice you can use it much more frequently and get good results.

Works exactly like it should. I bought this adapter instead of the second generation that K&F offers because of all the negative reviews that the newer one has. This one works and looks great, attaches to the body of the camera really well but the lens side it pretty tight, not too tight just tighter than I am used to. LOVE being able to use all my Minolta lenses on my A7R, (35mm f2.8, 50mm f1.2, 85mm f1.7 and a few others). Brings new life to old vintage lenses that would otherwise be sitting on the shelf with occasional use with my film cameras. If you're on the hunt for a MD-E-mount adapter for your old Minolta lenses, BUY THIS ONE. I got exactly what I needed and all my lenses focus to infinity as well. (actually slightly past infinity but thats better than not being able to at all).

Inherited a 60s Minolta camera and several lenses. Bought a Sony a6000 a few weeks ago and this has allowed me to use the better zoom lenses from my film camera. I get the best results in shutter priority mode and adjust aperture and iso as needed. Everything is manual, but it’s a good refresher for photography skill.

I own an EOS R but have mostly been using EF lenses. I decided to spurge on a Canon RF 85mm F2 Macro IS STM and a week later it was on my doorstep. My first impressions is it’s build very well: excellent fit and finish, sturdy plastics, metal mount and quality switches and rings. The manual focus ring is silky smooth and ideal for focusing macro subjects.On camera, my optical impressions were equality good: sharp edge to edge from macro to infinity and well corrected for distortion. Use of the lens profile isn’t needed in LR as the distortion and light fall-off are almost invisible. And no flare problems with blazing Hawaiian sunsets! The 0.5x macro is great for flowers and small products, delivering crisp details consistently, albeit bokeh was on the busy side. Hybrid IS provides amazingly smooth stabilization compared to the EF lenses of yesteryear.Focus is accurate and surefooted, rarely missing on my EOS R. When I carefully place individually selected AF points where I desire focus the result is consistently sharp images. I don't trust auto AF selection or zone focus for macro since the camera doesn't have a clue if you prefer the flower center or petal in focus. Single-point AF is especially effective for macro because it allows a precise lock on a small detail whereas a full-sized AF point may overlap multiple details.The only small negative is the auto focus motor is on the noisy side for a modern design—something I was aware of before purchase. Normal focus adjustments and movie servo emit wee creaking sounds. Granted the camera is against your head so it seems louder than it is, but the motor and sliding lens elements actually emit a robotic whirl if cycling from macro to infinity. Not unpleasant but loud enough to be picked up by the built-in mics during video. Use an external mic if you plan video. I normally do anyway (Sennheiser Shotgun mic), but something to consider. With that said, the sound is usually inaudible for your subjects.Some have stated that AF is slow, but that hasn't been my experience. In normal use, the STM drive is nimble, surefooted and locks on almost immediately: plenty fast enough for landscapes, macro and portraits. For movie servo focusing during my video blogs, it was fast on my EOS R. Obviously this optic is not intended to be a sports lens. Like most macro designs, it uses front element extension to focus and is by nature slower to focus than a rear element or internal focus design typical of USM lenses. However, the only time it seems slow is when refocusing from macro range to infinity. If you’re not using the macro range, keep the distance limiter set to the normal range (.5m to infinity) and you’ll avoid that little toil.No hood is included so I bought the JJC ET-77 clone: 90% of OEM quality at 20% of the cost of OEM.All in all a lovely lens: sharp, well corrected for distortion, little or no flare, solidly built, surefooted auto focus and reasonably priced.

Works great with old manual focus Minolta lenses on a Sony A3000 camera. Fit of adapter to camera and fit of lens to adapter are both precise.

I was looking for a hi-res webcam to use with OBS. I do Youtubes on electronics and need the ability to zoom into fine pitch circuit boards using an overhead boom. Image quality is great. The 5-50 mm zoom lens is decent, it does the job. A little fiddly, but for the price....I am trying to up the lens quality. I bought an adapter that allows me to use my lovely old Minolta MD manual (film) lenses with it. It needs a Cmount to Minolta MD adapter (~$20) plus about 6-8mm of Cmount extender tubes. If you do this, keep in mind that because of the smaller sensor, low mm (25-35mm) lenses are needed. I haven't yet found the perfect low mm zoom lens for it. Maybe a 28-70mm Minolta MD lens. There are many on Ebay. Have fun!Update. Using 35mm camera lenses works, but they are too close for this small sensor camera. Even my 28mm lens has a very small field of view unless you put the camera several feet away. So unless you want real close ups....