2011-04-02 Posted by Hin Man
This is a one touch small zoom lens that I enjoy using for street shooting and portraits. It reminds me very much of my previous favorite manual focus zoom lens with Vivitar/Kiron 70-150mm f/3.8 in both one-touch and 2-touch zoom designs. Though kiron and adaptall zoom appears to have similar designs, they perform a bit differently for me. The close up of the adaptall-2 20A is 1:3 in the 150mm end. Filter size is 49mm and it has a small built in lens hood.
I wish I still have my Kiron zooms to directly compare the two. I have used the 20A for couple of outings and I feel the sharpness and overall performance is good but yet it is not as good as the Kiron zooms that I have used before. I recall getting sharper and better close up pictures from the Kiron zooms. Though I favor the Kiron zooms over than the adaptall-2, the 20A zoom lens is still a good performer that is inexpensive to get.
What I like about the 20A is on its small size, quick zooming, great handling and when used with Tamron adaptall-2 PK-A, I can use 20A like any A lens. The lens has every potential to beat my prior positive experience with Kiron. I am yet to use this zoom lens more and perhaps find a better lens hood to replace the built-in lens hood which I find too small to be effective. In use with K20D, I find the lens work better with -0.7 Ev compensation.