07-16-2012, 08:17 PM
First of all, thanks for your recent series of lens reviews!
I bought the 28mm F1.8 and was quite disappointed. My copy of the lens shows a HUGE focus shift when stopping down from F1.8 to F5.6. There seem to be several reviewers/photographers that experienced a focus shift when stopping down. You explicitly state that the lens does not shift focus at all. This leaves me wondering how widespread the focus shift problem with this lens is and how likely it is to get a sound copy of the lens. I'm trying to return my copy for an exchange (This will be the first lens that I'll return).
I bought the 28mm F1.8 and was quite disappointed. My copy of the lens shows a HUGE focus shift when stopping down from F1.8 to F5.6. There seem to be several reviewers/photographers that experienced a focus shift when stopping down. You explicitly state that the lens does not shift focus at all. This leaves me wondering how widespread the focus shift problem with this lens is and how likely it is to get a sound copy of the lens. I'm trying to return my copy for an exchange (This will be the first lens that I'll return).