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View Poll Results: Is this DA*16-50mm good or bad?
Keep it -- it's good. 2388.46%
Return it or send it in for repair. 311.54%
Voters: 26. You may not vote on this poll

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05-13-2008, 07:04 AM   #691
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O Rings? This is a new rumour? Never heard of it.

05-13-2008, 08:15 AM   #692
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QuoteOriginally posted by codiac2600 Quote
Who are these people that say this? I've abused my 16-50 and have had it since almost day one and it's never happened nor can I see this happening by the design. More people have the 50-135 AFAIK and this issue hasn't come up yet and it's the SAME o-ring design. This is more internet garbage as I can see and after selling our 18th 16-50 at the store yesterday we still haven't had a bad copy with IQ.

I'm going to go shoot some walls or wrinkled paper to test my lenses now.
Hum, yes, hum, I can't find the posts using the search function, ....
My lens is fine as well. Is this a product of my imagination?

- Bert
05-13-2008, 09:09 AM   #693
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no imagination. See: Argh! My DA* 16-50 died [Page 1]: Pentax SLR Talk Forum: Digital Photography Review
05-13-2008, 09:38 AM   #694
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QuoteOriginally posted by codiac2600 Quote
Who are these people that say this? I've abused my 16-50 and have had it since almost day one and it's never happened nor can I see this happening by the design. More people have the 50-135 AFAIK and this issue hasn't come up yet and it's the SAME o-ring design. This is more internet garbage as I can see and after selling our 18th 16-50 at the store yesterday we still haven't had a bad copy with IQ.

I'm going to go shoot some walls or wrinkled paper to test my lenses now.
Chris,
Erric for one had O rings pop on him. See https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/25561-16-50-te...tml#post225251
It's not internet garbage. There are problems with this lens, like it or not.

Ken

05-13-2008, 09:56 AM   #695
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Thanks Bart,

- Bert
05-20-2008, 01:11 PM   #696
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Could someone direct me to the post with those serial numbers???


Thanks.

Martin
05-20-2008, 02:19 PM   #697
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https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/22297-da-16-50...-database.html
05-30-2008, 07:11 PM   #698
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My new DA* 16-50 is decentered

I noticed that several of my shots were "soft" on the right, so I took a picture of a wall:

Flickr Photo Download: IMGP2087a

Cr@p, I think it is!


Last edited by PentaxPoke; 05-30-2008 at 08:25 PM.
05-31-2008, 04:12 AM   #699
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looks like it to me
05-31-2008, 04:36 AM   #700
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It looks like it might be except, are you sure you were standing perpendicular to the wall? If not, the right side may be fuzzy because it is slightly further away and thus out of focus.
05-31-2008, 04:51 AM   #701
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Man, all these reports of bad 16-50's are really discouraging Especially since PentaxPoke says this is a new one.

Hrm, Sigma and Tamron offerings I'll probably now start considering

And yes the right is soft.
05-31-2008, 06:10 AM   #702
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QuoteOriginally posted by cputeq Quote
Man, all these reports of bad 16-50's are really discouraging Especially since PentaxPoke says this is a new one.

Hrm, Sigma and Tamron offerings I'll probably now start considering

And yes the right is soft.
You will get as many lemons from Sigma and Tamron as you will get from any other lowprice brand, especially at the pricelevel of massproduced consumer cameras/lenses. And for the love of god, don't trust all the alarms on internetforums. 99% of the people that are posting "OH NO MY LENS IS DEAD!" threads, would not know a bad from a good lense if they were born with one in their behind.

I can't judge from that image if it's something wrong with it. Noone can, you need to make sure that the camera is 100% straight and parallel to whatever you shoot. Thats a handheld shot that I am not even sure if it is focused in a straight line from the wall.

You need a tripod, you need to focus it properly and you need a more even subject. Try for example a paiting or a carpet, which is straight and have no shadows or shining fields.
05-31-2008, 07:06 AM   #703
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Tell us you were perpendicular to the wall, and it was just the sun coming from one side please .
05-31-2008, 07:16 AM   #704
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QuoteOriginally posted by Tom S. Quote
It looks like it might be except, are you sure you were standing perpendicular to the wall? If not, the right side may be fuzzy because it is slightly further away and thus out of focus.
If he were not perpendicular, Both sides would be fuzzy because neither of them would be the same distance as the center of the image. you know he is perpendicular because the center and the left side are both in focus. Assuming the wall is flat, the lens seems to be soft on the right side.
05-31-2008, 07:26 AM   #705
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Indeed. Thanks.
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