Tue Jul 23 15:48:37 EDT 2013 Aahz Maruch wrote:
> On Tue, Jul 23, 2013, Igor Roshchin wrote: > > > > Here is what I wrote previously about my experience with Pentax > > 17-70/4: > > > > (2 years ago:) > > Also, albeit very subjectively (i.e. without quantitative and > > systematic > > tests), I found that 17-70/4 tends to produce somewhat sharper images > > of > > the dancers than 16-50/2.8 even at f/4 or f/5.6. > > The only way I can explain this is by different quality (or speed?) > > of focusing. > > I've been puzzled by that myself, and that why I chose to keep 17-70/4 > > last year. > > > > [I am not sure if I had a bad sample of 16-50/2.8/] > > Did you ever experience any AF refusing to operate like I did with the > rental 16-50? (Described in another post.) I don't see your post about your problems with the rental lens (in this thread?) but I vaguely remember you writing earlier about some problems. I did not have any obvious malfunctions with that lens, but it was back in January of 2011, when there were some earlier, presumably with some defects units. Igor -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
