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
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