Ed,
My general recollection of PDML related experiences and
my own impressions: DA 12~24 Yes!
                    DA 16~50 No! Reported alignment and focus issues.
                    DA 17~70 Yes!
                    FA 24~70 (?)
                    DA 50~135 YES!! 
                    DA 60~250 Yes!

Truism: Any can have problems!

J

----- Original Message -----
From: "Ed Keeney" <[email protected]>
To: "Pentax-Discuss Mail List" <[email protected]>
Sent: Friday, January 29, 2016 8:27:11 AM
Subject: Lens Thoughts (DA 17-70 f4)

Hello all!

I have the following in my bag at the moment...

   Pentax K-50
     SMC-DAL 18-55 3.5/5.6
     SMC-DA 50-200 4-5.6
     SMC-FA 50 1.4

I find that the image quality of the 50 is outstanding when comparing
to the other 2 lenses (primarily the 18-55).  Not that the kit lens is
bad, but the 50 is very sharp.  I attribute this to the fixed aperture
and overall better quality glass.

I'm thinking of saving for a new higher quality lens (aren't we all?).
At this point, I'm not sure which direction to take.  Do I look at the
current lineup (below) or try to find a second hand older lens.

The current fixed aperture zoom lens lineup from the Ricoh site (US prices)...

  PENTAX DA 12-24mm f/4 ED AL [IF]     $ 699.95

  PENTAX smc DA* 16-50mm f/2.8 ED AL [IF] SDM     $1049.95

  PENTAX smc DA 17-70mm f/4 AL [IF] SDM     $ 499.95

  PENTAX HD D FA 24-70mm f/2.8ED SDM WR     $1299.95

  PENTAX smc DA* 50-135mm f/2.8 ED [IF] SDM     $1049.95

  PENTAX smc DA* 60-250mm F4 [IF] SDM     $1299.95


To start, I am looking at the DA 17-70 to roughly cover the same range
as the 18-55 and luckily it's the lowest priced one.  B&H has it
listed for $350, Amazon $300.

Online reviews are hit and miss on this (SDM focusing issues).

I'd like to get PDML thoughts, so fire away!

Thanks!
Ed
http://www.flickr.com/photos/edkeeney/

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