DA 17-70 - any tips?
Posted 03/01/2013 - 09:07
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Just to say that I put my lens through its paces last night in dim lighting at its longer end and had no real trouble. There were a couple of instances where it failed to lock, where contrast was negligible, but I think any of my lenses would have had the same problem (perhaps not if I upgraded to the K5II). Given Barrie's experience above, I'm aware my clean bill of health for the lens may be premature!
Posted 03/01/2013 - 16:26
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MattMatic wrote:
A point worth noting... the inertia on the focus ring is very light and it seems (to me at least) that this played a big part in the focus hunting.
Gently resting a finger on the focus ring while autofocusing pretty much resolved the hunting
(Added to that that I generally use centre focus point, with the AF button - and not the half press shutter)
Matt
Excellent idea
A point worth noting... the inertia on the focus ring is very light and it seems (to me at least) that this played a big part in the focus hunting.
Gently resting a finger on the focus ring while autofocusing pretty much resolved the hunting
(Added to that that I generally use centre focus point, with the AF button - and not the half press shutter)
Matt
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Posted 31/01/2013 - 16:55
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bforbes wrote:
Would you credit it mines broken, can't zoom below 35mm. I'll be sure to mention the focusing problem and hope it's better after the repair.
It's back and, while I have not been out with it, first impressions are that the focusing has improved. Close focus loads better same with low light and low contrast subjects. Makes me think it was not set up correctly to start with
Would you credit it mines broken, can't zoom below 35mm. I'll be sure to mention the focusing problem and hope it's better after the repair.
Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
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6913 posts
17 years
Co. Durham UK
https://pentaxphotogallery.com/artists/barrieforbes
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