I bought this on a whim and glad I did. Made the mistake of buying a couple of dash cams last year and should have purchased one of these. Mine replaced one of the dash cams that I could not repair.Image QualityI played some footage last night on my 4k TV to see how it performs. The camera worked well even in low light. 4k at 60 frames per second is smooth and resolves thing to a point but don't expect miracles. 4k really isn't much better than HD in any of these cameras. While native 4k is a plus and better than upscaling, the lens isn't from Leica, Nikon, or Olympus and can only resolve so much. Don't expect to see every detail as you would with a SLR or pro video camera. It is more than most would need but the sensor is always limited by the lens.SetupSetup was easy and had no issues figuring it out on my own.MemoryThe only issue I have so far is that it is not deleting videos once card is full. I may be off a setting but it stops recording when full in drive mode.Overall I highly recommend this camera, works good, is super tiny, and a great buy.

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.

I think other than the fact that the lens is small and the video appears closer than I'd like, this is a pretty solid webcam.

My 10 year old grandson really enjoys using this telescope. Easy to put together and handle. The smaller lens is .a little small for him.

Love the clarity and the antifocus lens. Very good value for the buck!! Highley reccomend. Logitech has gotten so much over the years.

These look great and are really comfortable over my glasses and fit great with my helmet. The lens is secure but easy to take off to change.

Use this deer hunting and love it. Only improvement I would like is if the eye piece cover was also attached to the monocular as the lens cover is

I like how the magnetic lens works. The strap on the goggles is high quality and has great grip. I'm enjoying these goggles.