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06-26-2016, 09:25 AM   #16
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Unless you're prepared to own 2 systems I'd stick with a K-3(II) or a K-1. I have a 645z (comments would apply to 645D as well) and I absolutely love it, but it will never be a walk-around/travel/general purpose camera, and while possible, isn't the best choice for wildlife/birding. I chose to ditch APS-C for a K-1 and have since sold all but one of my APS-C lenses. The only new lens I've picked up so far is the DFA 28-105. For what I shoot I stop down to f5.6-11 and everything I've read indicates that stopped down the 28-105 matches the 24-70 for less than half the price. I've been happy with that and my FF primes so far.

06-26-2016, 11:07 AM   #17
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QuoteOriginally posted by jrpower10 Quote
For what I shoot I stop down to f5.6-11 and everything I've read indicates that stopped down the 28-105 matches the 24-70 for less than half the price. I've been happy with that and my FF primes so far.
Well most lenses are sharp everywhere stopped down that much Contrary to what a few snob would tell you, the one that are not sharp are the exception
06-26-2016, 02:53 PM   #18
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QuoteOriginally posted by Nicolas06 Quote
Well most lenses are sharp everywhere stopped down that much Contrary to what a few snob would tell you, the one that are not sharp are the exception
Just have to get a Tamron SP 70-300 for 100 euros, to test that statement. Not bad for the price, and it's a full frame lens.

Last edited by biz-engineer; 06-26-2016 at 02:58 PM.
06-27-2016, 02:12 AM   #19
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QuoteOriginally posted by biz-engineer Quote
Just have to get a Tamron SP 70-300 for 100 euros, to test that statement. Not bad for the price, and it's a full frame lens.
Yeah, there exceptions. WA with field curvature that are sharp only where they are focussed, ultra zoom (18-2xx) and cheap long teles.

But anything in the 28-200mm range that is not a superzoom is sharp at f/8. Even the 18-55 manage closed down.

What not all lenses achieve is fast enough apperture and great constrast/flare resistance.

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