JINTU 420-800mm f/ 8.3 Manual Telephoto Zoom Lens + T-Mount for Canon EOS Rebel SL2 SL1 T3 T3i T4i T5 T5i T6 T6i T6s T7 T7i 4000D 6D 7D 60D 70D 77D 80D 5D II/III/IV 550D 650D SLR Camera Lenses

I paid $65 for this lens with a coupon from the product page, and I must say, it surpassed my expectations. I shoot occasional backyard birds for fun and used it on a Canon T4i body to take the attached shots. Shot in RAW format at 800mm, f/16, /1250 sec, ISO 1250, and cleaned up minimally in Lightroom Classic afterwards. Also attached is the same scene taken at 300mm with another camera. All three pics have not been cropped, they are dimension-wise as they came out of the camera.One thing that surprised me is how granular the focusing is. It shifts focus VERY gradually, which I guess is required for proper focusing at the 800mm end. The lens mates with the camera solidly and there's no wriggle.For me it's a keeper, it's a fun little lens to have in my bag to whip out for those occasions when the reach comes in handy (backyard bird watching, full moon, etc.). Don't pixel-peep and zoom in at 100% or greater to see all the flaws--they are there! Just enjoy it for what it provides at such low cost.

Performs exactly how it was described. Fits my Canon Rebel T 7 perfectly!

Great beginner product. Quality excellent

Like most have said it is difficult to have it fully extended without using a tripod or monopod, but I have been using this lens for about a month now and for the price you really can’t beat it. Like others have said it sucks in lowlight but is ideal for full daylight or for partial cloud covered days. I have been using this lens primarily for all my birding photos lately and tried it out at the San Diego Safari Park as well. The sweet spot for not using a tri or monopod is the 420-600 mm range, but if you use it often enough you can get great shots without a tri or monipod. All these photos are without using either. The focus takes a second to get used to as it has a fixed arpeture and smaller section to view through but once you use it enough it is a really great cheap lens. Its also much lighter than most lenses that reach 800mm. The Red-tailed hawk photo was taken at full extension of 800mm.

Ive used this lens to take pictures of birds and pictures of the moon. The quality is better than my phone for sure. The only problem I've come across is that the ring to tighten the lens at whatever mm you want does not work if I point the camera straight up and it's fully extended. It will slide back to 420mm instead of staying at 800mm.

I wasn't too sure what to expect from this, but I'm frankly amazed with it. While the full manual takes a fast hand and keen eye, after some practice it doesn't take long to get it going well. This can't be beat for the quality and price. This is always in my backpack and sometimes the only lens I'll use for that day's photoshoot. Definitely worth the buy!

This is a manual lens, which you should think of more as a telescope that happens to attach to your camera:-It does not have a shutter.-It does not have an automatic aperature.The aperature is a function of its shape and size, which is 8 at 420mm and 16 at 800mm, and varies in between.You need to set your camera to manual mode, then control the shutter speed (which is a digital shutter) and the ISO number (the sensitivity of the "film"). You can use the metering of the camera to find the correct exposure setting, which usually shows numbers going from -3 to +3, with zero being the nominal setting.If you are looking for a fully automatic lens, please go elsewhere and bring a lot of cash.I will be using it to capture the upcoming eclipse, so for those unfamiliar with FoV, cropped-sensor, etc. look at the photos for size reference. These were taken with Canon T7i at 700, 800mm, and 600mm respectively (I am unable to control the order of the photos). Also, the lens was covered with a Celestron Universal Eclipse filter, where the mounting-straps got in the way of taking 420mm photos, which is fine for my purposes.

I really wanted to like this lens since it felt like value for money, but not sure what was I thinking seeing all the nice pictures posted by others in the reviews since I could not take even 1 decent shot in about 100 tries. And yes I read about all the manual focussing limitations and different settings I needed to change for ISO and Shutter Speed. I did try it against the moon, against other landscape items in full bright sunlight, with and without tripods, but the lens would just not focus into other than a blur (and I am not even talking about when I clicking the shutter)... the lens focus from the view finder itself was always blurry aka out of focus, despite trying to focus several times with different focal lengths (yes I tried from 420mm all the way to the 800 mm). I also tried with two DSLRs that I have Canon Rebel XSI and T5. May be it works with more high end and newer models... too bad this is going back.