Pentax DA 18-135mm f/3.5-5.6 WR - Printable Version +- Opticallimits (https://forum.opticallimits.com) +-- Forum: Forums (https://forum.opticallimits.com/forumdisplay.php?fid=4) +--- Forum: Just Talk (https://forum.opticallimits.com/forumdisplay.php?fid=17) +--- Thread: Pentax DA 18-135mm f/3.5-5.6 WR (/showthread.php?tid=3265) |
Pentax DA 18-135mm f/3.5-5.6 WR - Klaus - 04-16-2011 It just came back from the Pentax service. Within factory specs (of course). Prepare yourself ... Pentax DA 18-135mm f/3.5-5.6 WR - Rainer - 04-16-2011 With that "opener" ... I would expect something in the quality of the EFS 18-135 ... a just about satisfying everyday-lens ... no more ... but no less. Since you emphasize that it is within factory specs ... I expect to see abysmal bad corners at some focal length along with hefty barrel distortion at the wide end plus vignetting. Just my 2cts ... Rainer Pentax DA 18-135mm f/3.5-5.6 WR - joachim - 04-16-2011 Hi, Ok, I now expect a performance on the level of the 50-200. Klaus when are you examining the 18-55 WR <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/cool.gif' class='bbc_emoticon' alt='B)' /> The entire thing leaves me wondering about Pentax. Their K-7 and K-5 receive(d) very good reviews on various site, putting them clearly ahead of what I perceive are the key Nikon competirors (D90 / D7000). What these reviews never tell you, is which lenses you should use for theses Pentax bodies. I am under the impression that with the Nikons you have a choice of roughly 3 quality levels. At Pentax you might argue there are also 3 levels, but it seems to me it is 3 levels of "uncompetiviness" regarding price/performance. Where, in my view Pentax has an edge is low light. Their in-body SR seems to be the worse system on offer, though if you team a Nikon with a f/1.4 lens you have none at all. For a standard zoom in the f/4 to f/5.6 range it seems the Nikon in lens system is superior. Enough of a rant, here comes a question: Which "standard-zoom" lens would people recommend for a Pentax K-5 for someone who would choose either of the 18-105 or 16-85 in Nikon land. FYI: In my country the Pentax 17-70 is 30% more than the Nikon 16-85. Pentax DA 18-135mm f/3.5-5.6 WR - dave9t5 - 04-16-2011 [quote name='joachim' timestamp='1302950992' post='7676'] Where, in my view Pentax has an edge is low light. Their in-body SR seems to be the worse system on offer, though if you team a Nikon with a f/1.4 lens you have none at all. [/quote] Pentax' SR doesn't seem to do well in tests, but in real-life it's superb. [url="http://dave9t5.zenfolio.com/img/s5/v4/p843061584-5.jpg"]Example 1[/url] Focal length:35 mm Focal length (35mm):52 mm Exposure:1/8 at f/2.8 Lens: Pentax DA 35/2.8 Macro Ltd [url="http://dave9t5.zenfolio.com/img/s4/v3/p349656413-5.jpg"]Example 2[/url] Focal length:85 mm Focal length (35mm):127 mm Exposure:1/10 at f/4 Lens: Voigtlaender APO-Lanthar 90m/3.5 SL ...and like you say, the best stabilization is the one you have with you. With in-body stabilization you always have it, like the Voigtlaender example above. |