Are you really worried about the focussing ring moving,
or just about the front element of the lens rotating
(which can be a problem if you are using a polarizer)?

Lenses marked as "IF" (internal focus) don't rotate the front
element.  This includes several lenses not in your list:

  smc PENTAX-F  135mm F2.8 [IF]
  smc PENTAX-F* 250-600mm F5.6 ED[IF]
  smc PENTAX-F* 300mm F4.5 ED[IF]
  smc PENTAX-F* 600mm F4 ED[IF]

  smc PENTAX-FA* 24mm F2 AL[IF]
  smc PENTAX-FA  24-90mm F3.5-4.5 AL[IF]
  smc PENTAX-FA  28-105mm F4-5.6 [IF]
  smc PENTAX-FA  28-105mm F3.2-4.5 AL[IF]
  smc PENTAX-FA  28-200mm F3.8-5.6 AL[IF]
  smc PENTAX-FA* 80-200mm F2.8 ED[IF]
  smc PENTAX-FA* 85mm F1.4 [IF]
  smc PENTAX-FA  135mm F2.8 [IF]
  smc PENTAX-FA* 200mmF2.8 ED[IF]
  smc PENTAX-FA* MACRO 200mm F4 ED[IF]
  smc PENTAX-FA* 250-600mm F5.6 ED[IF]
  smc PENTAX-FA* 300mm F4.5 ED[IF]
  smc PENTAX-FA* 300mm F2.8 ED[IF]
  smc PENTAX-FA* 400mm F5.6 ED[IF]
  smc PENTAX-FA* 600mm F4 ED[IF]

  smc PENTAX-DA  10-17mm F3.5-4.5 ED [IF]
  smc PENTAX-DA  12-24mm F4 ED AL[IF]
  smc PENTAX-DA  14mm F2.8 ED[IF]


On Wed, Feb 07, 2007 at 12:56:56AM +0100, Thibouille wrote:
> I dunno why most of the time nobody ever mention this but the DA14,
> with DFA50/100 are AFAIK the ONLY pentax lenses which focus WITHOUt
> ever makiing the focussing ring turn. IMO this is VERY useful.
> 
> Sorry for yelling but I thougt it was important.
> 
> 2007/2/6, Christian <[EMAIL PROTECTED]>:
> > Godfrey DiGiorgi wrote:
> >
> > >
> > >    http://homepage.mac.com/godders/lenshood-lineup-1784.jpg
> >
> > What I find interesting is the size of the focus rings.  The DA14 being
> > such a big lens appears to have a really nice manual focus ring, the
> > others look horrible.  How is manual focus feel on these?  I hated the
> > teeny focus ring and focus feel of the FA28-70/4
> >
> >
> > --
> >
> > Christian
> > http://photography.skofteland.net
> >
> > --
> > PDML Pentax-Discuss Mail List
> > [email protected]
> > http://pdml.net/mailman/listinfo/pdml_pdml.net
> >
> 
> 
> -- 
> 
> Thibault Massart aka Thibouille
> ----------------------
> *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ...
> 
> -- 
> PDML Pentax-Discuss Mail List
> [email protected]
> http://pdml.net/mailman/listinfo/pdml_pdml.net

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