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suro · 07-24-2008, 07:33 AM

Originally Posted by leadbelly

I just got my 16-50, and after a few test shots, it seems like a good copy. a few questions though...

1) Is the zoom ring really a little stiff, especially around 28-35mm? Unlike the 50-135 that's smooth? (Is it because of the weathersealing in the front part of the barrel where the lens extends?)

2) Focusing wide open is sharp at 50mm, but when I focus at 16mm, it's a little soft. Is this normal when used with the K10? (as with my 50-135, focusing is soft at the wide end, whereas focusing at the long end is hella sharp... but when I tried the 50-135 on a k20, it was sharp all the way.) Is this a K10D only issue?

Thanks!

1. I think is a temporally problem (silicone greasing). Your lens will work better after few times use. I'm not have this problem.

2. I think you must try to use your lens on K20D and watch the result. Probably it's problem K10D.

You're welcome!

07-24-2008, 07:33 AM	#123
suro Senior Member Join Date: Jul 2008 Location: Ekaterinburg Gallery Photos: 0 Posts: 158	Originally Posted by leadbelly I just got my 16-50, and after a few test shots, it seems like a good copy. a few questions though... 1) Is the zoom ring really a little stiff, especially around 28-35mm? Unlike the 50-135 that's smooth? (Is it because of the weathersealing in the front part of the barrel where the lens extends?) 2) Focusing wide open is sharp at 50mm, but when I focus at 16mm, it's a little soft. Is this normal when used with the K10? (as with my 50-135, focusing is soft at the wide end, whereas focusing at the long end is hella sharp... but when I tried the 50-135 on a k20, it was sharp all the way.) Is this a K10D only issue? Thanks! 1. I think is a temporally problem (silicone greasing). Your lens will work better after few times use. I'm not have this problem. 2. I think you must try to use your lens on K20D and watch the result. Probably it's problem K10D. You're welcome! __________________ Pentax K20D: Pentax 21mm /3.2 Limited + Pentax 35mm /2.0 AL + Pentax 70mm /2.4 Limited + Pentax 77mm /1.8 Limited + Helios 40-2 85mm /1.5 + Pentax 16-50* /2.8 + Pentax 50-135* /2.8.