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5 Days Ago   #1
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Pentax 645 da 28-45mm

I just purchased a used Pentax 645 DA 28-45mm lens for a good price.Autofocus is working properly and spot on. However, when I switch to manual focus, the focus ring is firm, meaning you can’t move it using one finger like a number of other Pentax 645 FA lenses I have. when I reach the point where I focus in small movements back and forth a achieve maximum visual contrast and thus exact focus, it “catches” so to speak, making it more difficult than it should be. Not a smooth back and forth final focus. Annoying actually, as the weight of this lens would benefit from faster manual focus when hand holding. Has anybody else experienced this with this lens? Surprising for a $5000 retail price lens new.

4 Days Ago   #2
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QuoteOriginally posted by ron6771 Quote
I just purchased a used Pentax 645 DA 28-45mm lens for a good price.Autofocus is working properly and spot on. However, when I switch to manual focus, the focus ring is firm, meaning you can’t move it using one finger like a number of other Pentax 645 FA lenses I have. when I reach the point where I focus in small movements back and forth a achieve maximum visual contrast and thus exact focus, it “catches” so to speak, making it more difficult than it should be. Not a smooth back and forth final focus. Annoying actually, as the weight of this lens would benefit from faster manual focus when hand holding. Has anybody else experienced this with this lens? Surprising for a $5000 retail price lens new.
Sounds odd. I'll have to check mine, but I don't remember this....
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