So, I am not really familiar with the MK I version of this lens, but I found one in excellent condition (no marks or dust) for $600. Seeing as how I have been looking for my first L lens, and I have been wanting something in the wider end of the spectrum, shouldn't I snap this up? Also, the 2.8 interests me for portrait purposes (my primary interest) more than some of the F4 L zooms.



