Excellent lens, just disappointed that it came in a cardboard box. No directions or warranty.

Takes fantastic photos

A lente é muito boa. Com relação ao vendedor, ele se mostrou solícito em responder todas as minhas dúvidas. A única coisa que não gostei foi do fato da lente vir sem a caixa original, mas embrulhada em plástico bolha, sendo um equipamento novo e com nota fiscal.

war nicht zu gebrauchen, weil Defekt. Wurde ohne Probleme zurück gesendet, Geld ohne Probleme zurück erstattet bekommen. Freundlicher Kontakt. Schade!

I am now officially spoiled... Canon's new nanoUSM technology is a total marvel and they need to start advertising their lenses accordingly so we know which is USM and which is nanoUSM because I only want to use nanoUSM now that this lens has spoiled me. Now I'm not a mechanical engineer or anything but I want to try to explain the differences the best I can so you can understand what makes the focusing technology in this lens so great compared to even other high quality Canon lenses.The lowest quality auto-focusing system would be found in like the cheapy kit lenses, like the EF-S 18-55mm f/3.5-5.6 IS II lens. In that, it's a basic motor and gear. The end result is an auto-focus that is both noisy and slow. Being slow is negative for obvious reasons, being noisy is both annoying and if used while shooting a movie can drown out the audio of the subject of your video.The next step up (no pun intended) is the STM otherwise known as a stepping motor. With this, the focusing is still slow, but this time it's very quiet. These lenses were designed to allow for auto-focusing during videos without the sound being distracting during the video. But the problem is that it's still slow.A step up from there is the USM otherwise known as the ultrasonic motor. Now here's the confusing thing, there is now 3 types of focusing mechanisms that are all labeled with "USM." This is why I said I wish Canon would advertise their lenses accordingly to the type since not all USM lenses are created equally. Before there was the Micro type and the Ring type. The desired one then was the Ring type. But basically the advantages of USM lenses is that they focused very quickly, and more quietly than the cheap motor one but still a little more noisy than the STM (in videos you'd hear like a chirping sound) but since it's fast and the focusing occurs quickly it shouldn't distract that much. The difference between the Micro-USM and Ring-USM is the Ring allows for full-time manual focusing even while you're in auto focus mode. SOME Micro-USM allowed for it but not all.But now there's a third type, and this is the newest one, one I think, and wish, Canon will make all of their new USM lenses with this technology. They call it "nanoUSM." Basically nanoUSM combines the advantage of the STM lenses of being quiet, with the advantages of the Ring-USM lenses of being very quick to focus and allowing for full-time manual focus. Basically it's the best of all worlds, lol.Now that we got that out of the way, this EF-S 18-135mm f/3.5-5.6 Image Stabilization USM Lens is the third type, the best type, the nanoUSM. So far I'm in love with the focusing mechanism and the lens itself is a very well-built lens. The optical lens doesn't rotate with focusing or zooming like the cheap ones do, so you can attach a lens hood or a polarizing filter without needing to constantly adjust it as the camera changes focus or zoom. But that's expected from anything but the cheapy kit lenses. Just figure I mention it, not claiming this to be some revolutionary feature or anything.The image quality has been really great so far. I don't notice any obvious signs of vignetting or chromatic aberration with this lens. Not saying it doesn't have it, my "tests" haven't really been scientific, I'm just looking at the photos I happen to have taken with the lens and looking at them at 100% especially around the edges of the photos and so far not really noticing anything.Zooming with the lens is a LITTLE on the rough side compared to the 70-300mm IS II USM lens, not sure if it's like that with all of them or just with mine, but it's not a big deal to be honest, I only mention it to make this review as detailed as I can to help with people's purchase decision. While using it you likely wouldn't really notice it and it doesn't keep me from getting to the focal lengths I need to quickly and precisely.Overall this is a typical high quality Canon lens with the amazing new nanoUSM focusing technology. I see some cameras like the T7i and T6i come in kits that come with the STM version lens with the same focal range, I highly recommend for you guys who want this range, to skip that kit and buy just the body and then get this version lens separately. It'll definitely end up costing more, unless you find someone selling their's brand new at used prices (like I did), then it might end up being the same cost to you in the end (shout-out to seller linhphoto, the lenses he's selling is off a kit from a higher-end camera, and is listed as used but is as far as I can tell after buying two from him, brand new).