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Forum: Pentax K-1 03-07-2016, 09:15 PM  
Will K-1 SR handle 150-450 + 1.4xTC?
Posted By reh321
Replies: 22
Views: 2,677
Part of the question is how do we define SR as "working"? In general, as you implied, photographers are much fussier than we were in the days of film. I use the term "needle sharp" because we've become so demanding these days; in other words, the sharpness bar is much much higher than in was in the days when Kodachrome 25 defined "sharp".
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