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Forum: Pentax News and Rumors
01-25-2017, 09:16 PM
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Adding the K-1 SR II 5 axis stabilization and new sensor can only mean better IQ and lower noise.
Who doesn't want to be able to reduce blur and noise?
Also, sounds like they are trying some new algorithms even though they are using older AF hardware.
This is great because so much of the technology is in software.
You can't have more PDAF points and without developing the software to take advantage of them first.
So all in all I would applaud Pentax for the incremental improvements.
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Forum: Pentax SLR Lens Discussion
01-15-2017, 12:39 PM
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I think when you mount an FF lens on a crop body, you are in some sense magnifying a portion of the glass (image circle), which can magnify the achilles heel of the lens.
Perhaps you are encountering this to some extent with your tests.
I have the old Tamron 70-200 f/2.8. It is reasonably sharp, but definitely soft from f/2.8-f/4 at 135mm-200mm, and especially at close focusing distance. The weakness is a bit less pronounced on my K1 than on my crops.
Tony Northrup relayed a story of a guy who bought Canon FF 24-70 f2.8s and had a poor go with them on crop bodies, sending them in to Canon service, who found nothing. He switched to FF and had much better performance with the exact same lens copies.
Just food for thought.
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