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03-09-2012, 12:48 AM   #1
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Pentax da* 50-135mm and Tokina atx 28-70 f2.6-2.8 Pro question

Hi all,

i own a Pentax DA* 50-135mm lens for my k7. is the Tokina atx 28-70 f2.6-2.8 Pro a great compliment to it?

Thanks!

03-09-2012, 03:04 AM   #2
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Not half as sharp wide-open in my experience, but a match by f/5.6...
03-09-2012, 06:00 AM   #3
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QuoteOriginally posted by rob1234 Quote
Not half as sharp wide-open in my experience, but a match by f/5.6...
Oh i see. In terms of focal length? Tokina has a crop factor so 42mm at wide.
03-09-2012, 06:19 AM   #4
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QuoteOriginally posted by mamonmon;1859752.:
.Tokina has a crop factor so 42mm at wide.
On your K-7, 50mm is always 50mm for all the lenses, and 28mm is always 28 mm. Full stop.

The DA*50-135mm and Tokina 28-70 have hence very different focal length coverage on your K-7.



03-09-2012, 06:35 AM   #5
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From my research in the past I decided that the Tokina AT-X 280 AF PRO 28-80mm f/2.8 is better. But I didn't end up getting either one, and eventually I got the DA*16-50 (after I'd already filled in that focal range with primes).

I think the price is bit higher, but not that much (as the lens review database average would have you believe - my guess is the 1300 price is actually in a different currency).


The DA*16-50 is not as good as the 50-135 (but few lenses are). However, it's still good, and it's a good compliment to it. Just take a look at the huge number of DA*16-50 photos on the Pentax Photo Gallery, if you don't believe me. I'm glad they're updating it, but it gets the job done. It's a little weak from ~16-20mm, but good after that. I have a DA15 so I don't mind. It sounds like you wouldn't mind either, since you're looking at 28-70.

Last edited by DSims; 03-09-2012 at 06:41 AM.
03-09-2012, 06:41 AM   #6
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No, I meant with the aperture wide open - pretty soft across the entire zoom range. However, as I said, very sharp at f/5.6 up; maybe good for portraiture, but I prefer sharpness.

Have you tried a Tamron 17-50/2.8 or 28-75/2.8? Both very sharp and cheap.
03-09-2012, 08:29 AM   #7
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I also have the tamron 17-50mm. I want somewhere in between the 17-50 and 50-135mm. Is the iq of 17-50 better than the tokina?
03-10-2012, 04:40 AM   #8
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Much better (although can only compare my copies).

03-11-2012, 06:02 PM   #9
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Thanks! i'll just keep my tamron 17-50 and da* 50-135 setup. i'll just wait for pentax to release a 20-80 range DA* lens.
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