Only wish is that the light would stay on for 30 seconds or 60 seconds. Not just 15

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!!)

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

Niente da dire di particoalre. E' il tappo originale Tamron, consegnato velocemente e a un buon prezzo. Consigliato senza dubbi.

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.

I bought this filter for a Tamron SP 70-300mm f/4-5/6 Di VC USD telephoto lens. The filter was rather 'dirty' with speckles of dust and some mild 'grease' stains unevenly distributed across the filter area when I got it right out of the box! I managed to clean the filter successfully using a lens-pen without scratching it (phew...). However, I'm not sure who's the culprit.. the manufacturer or the seller (Overstocks Closeout). For the benefit of doubt, I'd still rate it 5-star as it isn't a big deal and the filter (after being cleaned) does it's job effectively without any signs of 'ghosting' in the photos I took so far (at least > 100 since using it).