For the 20-40 ED Limited lovers, a good review

Started Mar 14, 2014 | Discussions thread
ogl
ogl Senior Member • Posts: 1,910
Re: For the 20-40 ED Limited lovers, a good review
1

I simply paid additional payment and got FA31. I don't like lottery.

PolarHki wrote:

Isn't the lens a double tube design where the inner tube extends most at 20 mm?

(It looks like that on the images here, at least:

http://www.lenstip.com/396.2-Lens_review-Pentax_HD_DA_20-40_mm_f_2.8-4.0_ED_Limited_DC_WR_Pictures_and_parameters.html )

So if the inner tube is misaligned, it would make sense that the lens gives poor results at the wide end (inner tube most extended), but good results at the far end (inner tube most inside).

Of course, with a lens at this price level, one should believe that quality control or at latest the service center would notice this and replace the lens. But unfortunately Pentax seems to be known for very wide limits of what is considered as "very good". The most famous example being the photozone review of the 18-135 that was obviously a bad sample, and Klaus sent it back twice to service, both times being told that everything was "within factory limits" or so...

 ogl's gear list:ogl's gear list
Pentax K-5 IIs Pentax smc FA 31mm F1.8 AL Limited Pentax smc FA 43mm F1.9 Limited
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