For those who aren't aware, this lens is the second of Canon's nano USM lens, following the EFS 18-135 USM that came in a kit with the 80D. It has a very similar construction, using Canon's new premium consumer modern look-and-feel, that's a huge step up in construction of the 55-250 STM, which is still a great lens and should be considered for its price if you're looking for a non-pro telephoto Canon.First, the bad. I really don't like the nano USM manual focus ring. It's electronic, meaning that when you turn the focus dial (which feels great, by the way), electronic signals are sent to focus the lens. It's not a constant change -- twist fast, and it changes in a big jump, and turn slow, and the stepping is tiny. It also doesn't work while it's off or in sleep mode, so you have to press the shutter halfway to wake it. I strongly prefer ring USM (which is on practically every Canon pro lens), which has a straight-forward, turn the focus ring and focus changes, regardless of whether you're in AF or MF. This is my only real criticism of the 70-300 USM.Now, the good. The lowdown is that it's a midrange priced lens that gives you pictures nearly as good as much more expensive options in most situations. A lot of non-professionals just can't afford to spend thousands of dollars on a 300mm zoom that has IS. It's also much lighter than Canon L zoom lenses, and it's usable without a tripod (though obviously, tripod is preferred for many situations).The autofocus on this lens is very fast and silent, though I think slightly slower than the 18-135 USM. If you like that lens, you'll love this one: it has very similar construction, with Canon's new, premium consumer-modern look-and-feel. It's definitely a step up in quality and sturdiness (and has a lot more glass and weight) than the 55-250, and AF is vastly improved over the old 70-300. The layout situates IS and AF switches aligned on the left, and the zoom lock on the opposite side. It is very slightly larger than its predecessor.Taking just a few quick shots outside with an 80D to test the lens, the pictures appear sharp in all the corners in that sweet spot between f5.6 - f11. In good lighting, both viewfinder and Live View AF on 80D is amazingly instant and totally quiet, for those who want to use this to shoot video. In poor lighting, AF is still fast. I think that regardless of your use case, if you have DPAF, and want to shoot in AF, this lens is a beast. So, with videos and fast-moving wildlife or sports the nano USM will let you capture a sharply focused target and snap the picture to capture that that magic moment.On a T6s, which does not have Dual Pixel autofofocus, AF through the viewfinder is instant and fluid; AF through liveview may have a little hunting if the focal distance changes a lot. I suspect that if live view shooting is your thing, you'll probably find slow-moving subjects just fine, performance most videos acceptable, fast-moving subjects acceptable but a little less than ideal (eg some wildlife shots where instant focus is appreciated).So, for instance, using this lens, tap-and-snap of a hummingbird on an 80D is nearly instant, whereas on a t6s, there's the tiniest pause while it acquires focus. Through the viewfinder, there's effectively no difference.This lens has a variable aperture at 4.5-5.6; of course, I'd prefer f4 at all focal lengths or better. But realistically, at the price point of this lens, that's just not going to happen, or many other sacrifices have to be made (like prime lens instead of zoom, no IS, etc.).Other things: Like all non L lens, it doesn't come with a lens hood, which is a pity. Also, this takes 67mm, so there is a slight premium when buying a B+W or Hoya filter. Since that's an unusual size, that most people don't have a spare filter for, expect to add another $50 or so.In short, a great, new mid-range addition to Canon's lens collection for those of us who don't want to go crazy on pro lens.

Got this to have a nice wide zoom for my 5D mkII, and I love the lens. I do find that it actually gets a little soft near 40mm, which I don't mind so much as I won't be using it much past 24 anyway, but just something to note. Colors look great. Some barrel distortion at 17mm, but that's to be expected. All in all not a bad little lens for the price!

It is my first ultra wide angle zoom lens. I took some photos for test. It worked really great beyond my expectation.

EF - Lens adapter perfect for wide angle and other type of lenses cheaper than the viltrox, and better to use since it is from Taiwan and made in japan i rather buy japanese and taiwanese products and support them since their quality is greater than Chinese, i support it since they actually are more detailed on the manufacturer and the way they actually do the diagrams and cuts are precise but i know the quality is even stronger and more durable than chinese cheap brands. Love japanese quality and brands.

The Xenvo Pro wide angle lens is a must when trying to get everyone together in class for a Zoom meeting during COVID-19. It's a snap, just clip it to your laptop camera and everyone can still maintain the correct social distance.The image attached was shot using Zoom on a MacBook Air.

Most photographers who consider themselves serious amateurs and probably almost all professionals will have at least occasional need for an ultrawide lens. Interiors, architectural exteriors, and some travel scenes are best recorded by a lens whose angle of acceptance approaches or exceeds 100 degrees. If you like and want to produce images in which large foreground objects play against smaller objects in the background while all remain in sharp focus, an ultrawide lens is a necessity. Some may also be surprised to hear that the ultrawide lens can produce interesting portraits when the goal is not just to show the individual, but rather to set a person in a context and let the environment become part of the portrait. For decades the usual focal length for such a lens has been 17mm, though of course even wider lenses, including those which do not attempt rectilinear correction, are available for special purpose image capture. This lens is an ultrawide zoom that pretty much covers the entire wide-angle range that most photographers will need -- extremely wide at the low end and just below normal at the upper.Its advantages include its utility as an all-purpose wide angle lens (capture range from slightly wide to ultrawide) and its relatively low price for a complicated semi-specialty lens. At f/4 it is not a fast lens, and as has been pointed out in other reviews it suffers from slight softness at some apertures. It is one of Canon's L (red ring) lenses, which are higher-end products, and one can trust the company to have minimized the negative issues that can emerge in complex lens designs. If you feel the need for a perfectly satisfactory wide-angle zoom or primary lens, but don't want to break the bank to get the best one, this is a good lens to consider.On the other hand, if you want a faster lens with a bit more lateral grasp, Canon also offers the 16-35mm f/2.8 zoom lens (also in the red ring/L class) at about twice the price of this one. The more expensive lens offers not only what the 17-40mm zoom does (though it does not go quite as close to a normal focal length on the high end), but provides in addition extra light capture for lower-light environments and the slightly wider angle of acceptance. If I had thought a little longer about the differences between the two lenses, I would have ordered the more expensive one. I may upgrade at some point in the future if I ever feel constrained in the use of the one I did buy. But I am not dissatisfied with this lens and have no qualms giving it the five-star rating it deserves in its own right. It is a solid and reliable tool, well made, and provides excellent images.

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....

After I purchased a wide angle lens for my Canon M50 I realized that I would need an adapter. Everything came down to making a decision between the budget adapter and forking over more money for the canon brand because reviews were constantly complaining about the budget adapter not fitting and potentially screwing up your camera. Luckily I realized that there were lightly used Canon adapters for more than half off so it was a no brainer and I’m glad to report that it has exceeded my expectations in quality and I’m glad I spent the few extra bucks for the Canon adapter. Definitely would recommend.