17-70mm 1:2.8-4.5 Sigma DC Lens fits on canon Mark 2 II

Description:

The non-OS version of the 17-70mm DC lens is very good. It is small and light-weight and some say it is sharper than the newer OS lens. I had one of these in Sigma SA mount and it was "EX" in image quality which some other fellow Sigma users have echoed. Full disclosure: I did replace mine with the newer OS version because I prefer an OS lens due to my not having the steadiest hands but I still think the older version was sharper.

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  Sigma 17-70mm F2.8-4.5 DC Lens