I won't make this review lengthy, because it's all been said before, but I will qualify myself by saying that I depend on photography for approximately half of my income, and I recently purchased this lens after many hours of online research. I own a Canon 7D, and I was looking for a lens that would fall into the wide/portrait range with the 7D's 1.6x crop factor. This lens was bought as a replacement for my old Tamron 28-75, which was a respectable lens. The Canon 17-40 has thus far been a very solidly built, light, fast-functioning lens. It autofocuses VERY quietly with its ultrasonic motor, and the autofocus is very accurate. On the 7D, I have found it to be a capable portrait lens at 40mm, as well as a great lens for interiors. I bought it as a complement to the Canon 70-200L, for a lightweight kit, and while I am missing the 41-69 focal range, I haven't really needed it. The lens produces VERY SHARP photos, and is much more reliable in quality than the Tamron. I would definitely recommend it to 7D users wanting a versatile walkaround lens, or to full frame users looking for an ultrawide with great sharpness.

This lens adapter fits my new canon eos M50 to my Tamron and irix and sigma lenses that I got before this camera. They all fit ef-s mount for the rebel t6 camera

Sorry about all the photos, it is an awesome lens!! I've owned a few Tamron lenses and loved EACH one!! The Tamron 18-400mm EF Canon mount lens is a great lens, BUT this one I think has a LOT better glass! I am new to Fujifilm and I am still getting used to the X-T3, I had a couple of the Fuji XC lenses and finally I saw this lens here in Amazon. I've been trying to find it other places and everyone was backordered!! I AM VERY HAPPY I FOUND IT HERE!! Great..... NO, AWESOME lens!!! At 18mm the lens will focus at .2 inches, that is 5mm. At 300mm it needs to be back around 2.5 to 3 feet. That is farther back than when I was using my Canon and Tamron 18-400mm lens, I will need to get used to my Fuji and Tamron 18-300mm lens. BUT the photos are MUCH better!!! I HIGHLY recommend this Tamron 18-300mm lens!! I just can't say enough good things about it!!! (hehe I could post several more photos, close focus/macro is great!!)

I got this lens a while a go...the first copy was defected but the second one was the right one....is very sharp considering that is not L series...but the focusing system is very fast...I can focus almost instantaneously...is fantastic considering the fact that is 4-5.6 lens....for everyday shots is very good...I was debating between the version of 70-300 L and this one and I'm glad that that i choose this one...considering the price.... now compared to the 70-300 Nikon version is faster and sharper without doubts,, i have Nikon and canon full frames and regarding to the 70-300 range...this canon beat the Nikon one....for sure...

I love the image quality I get from this filter, I use it with my canon 16-35

This adapter did the job! I can now use all my Canon, Tamron and Sigma lenses on my new Canon m50.

I bought this filter for my Tamron 17-28mm e-mount lens and love it. I haven't noticed any major color distortion and the sharpness doesn't seem to be affected at all either. The low profile seems to negate most vignetting you may encounter, but it does show up (unsurprisingly) if you stack this with another filter like a CPL. The gold ring is a nice touch too. I would absolutely buy these again as you get great results for the money.

Abbinato al Tamron SP AF 70-300 F/4-5.6 Di VC USD permette di proteggerlo da eventuali graffi o spruzzi d'acqua sulla lente. Le immagini non perdono qualità rispetto ad un uso dell'obiettivo senza filtro applicato. La struttura del filtro non è plastica quindi non vi sono pericoli di sfilettatura.