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04-03-2012, 12:47 AM   #16
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Hi,

I have K-r and Tamron 17-50mm/F2.8.

Do you think is there any good reason to switch Tamron for Pentax DA 16-45mm/F4.0? I could buy that DA second hand with nice price.

04-03-2012, 02:45 AM   #17
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Absolutely not lol. 17-70 then maybe !
04-03-2012, 09:26 AM   #18
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haven never used non-pentax lens on pentax dslr. But I'm saying that 16-45/F4 is a great lens. I bought a used on @ usd 290, and it's ext+. Average I'll rank this lens 8/10------the missed 2 point is due to the F4, not F2.8. however the 16-50 F2.8 is like triple this price, so you can't complain it.
04-03-2012, 10:30 AM   #19
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17-50 & 16-45 are both great lenses. I would prefer quick shift over f/2.8 but that's me, since I have 28+50mm primes for lower light. I prefer WR+qshift over both, so the 18-55 is sufficient for now.

04-04-2012, 12:22 AM   #20
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What is quick shift? (sorry, I'm not speaking english too much)

I believe that 16-45mm/F4 could be better in landscape photography where largest aperture is not used that much.
Otherwise if you shoot portraits inside, longer focal lenght and wider largest aperture is the winner.
04-04-2012, 11:19 AM   #21
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QS means quick shift. A QS lens has a swift on the lens to make sure you can change AF/MF swiftly.
Hope this is the right answer =3
04-04-2012, 07:11 PM   #22
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QuoteOriginally posted by alspe Quote
What is quick shift? (sorry, I'm not speaking english too much)
Quick shift means you can adjust the focus manually by turning the focus ring even if the camera is in auto focus. So, for example, you can auto focus on a subject and then use the quick shift to fine tune the focus or to move it slightly to make some other part of the picture more in focus.

Or manually focus some shots and use auto focus for others without having to change any camera settings.
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