Or some kind of dysfunction if the zoom hangs up at 18mm
-p
On 3/15/2012 11:16 AM, John Sessoms wrote:
From: John Francis
On Wed, Mar 14, 2012 at 04:03:45PM -0400, Daniel J. Matyola wrote:
Does anyone have any experience with, or opinions on, the following
lens?
smc PENTAX-DA 1:3.5-5.6 18-135mm ED AL [IF] DC WR
And just what do all those letters at the end mean?
ED - Extra Dispersion Some elements made of high-refractive-index glass
AL - Aspherical eLements Some of those pieces of glass have shapes
that are somewhat harder to manufacture.
IF - Internal Focus The front element doesn't rotate when focussing
(which is very handy if you're using a polariser)
DC - ?? Don't Care? Destroys Cameras?
WR - Water Resistant
DC = Direct Current motor
... and I believe ED stands for Extra *low* Dispersion glass
--
Being old doesn't seem so old now that I'm old.
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