This is very light zoom from Tamron. Did purchase this on error as adaptall-2.org doesn't mention it. Pretty nice travel lens. I paid 10 GBP+shipping for it. f:8, ISO 200 and 1/160s flash. Two flashes (Wansen WS-560), one with Lambency and another with 20cm*25cm bounce card. About 100 mm. this is a crop, about 50% pixels removed 100% crop No sharpening or noise removal but contrast where Raw Therapee defaults. I think that it performs ok and it is much better than Sigma 70-210mm/4-5.6 from 80's(similar plastic construction). I will take some more pictures when weather permits.