The real problem with the 18-135

Started Aug 13, 2014 | Discussions thread
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OpticsEngineer Senior Member • Posts: 4,553
The real problem with the 18-135
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The Pentax 18-135 is a good lens.  It seems to me that Pentax just hasn't done a good job explaining to users where it strengths and weaknesses are.  It is best from mid range to full zoom.  Particularly soft in the corners at f=18 mm at close distances, like where many reviewers shoot a test chart.   But then getting noticeably better at f=21 and above.   Maybe if there was some explanation of these characteristics lens reviewers might have a chance to write a review that does the lens some justice, instead of thinking it is like a Tamron or similar zoom... good wide, quite soft at full zoom.   The Pentax 18-135 seems to be designed to be the opposite of what is considered the standard lens design and it seems to confuse the reviewers.

Is this the way other fans of the 18-135 see it?

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