Henning, Now here I agree with you. The build is more like a consumer lens, but it is optically superior to other wides. BTW, I did some checking and what you say about extension tubes on fast lenses may be true. One reason why in some Zeiss lenses they have floating elements, but the 135mm F2 is another story. I think this is due to something called the optical invariant or Abbe's optical invariant and not well covered in texts. Also, a lens with fixed elements (most of them) can be corrected completely for spherical aberration and coma at only one distance. At other distances some aberration is increased. Normally, camera lenses are designed to be optimum at about infinity and maintain corrections well down to about ten focal lengths. For this reason camera lenses generally are not ideal for close up work or for enlarging although a relatively slow, normal angle, lens will do OK. Perhaps I will stick with macro lens for macro work. BTW, you would not believe how good the Sigma 70mm is. If you get a chance to try one check it out. Its just bad at F2.8, but at smaller apertures, especially F8, and F11/16, wow!!!! Peter K
----- Original Message ---- From: Henning Wulff <[EMAIL PROTECTED]> To: [email protected] Sent: Tuesday, March 13, 2007 6:52:09 PM Subject: Re: EOS EF-S 10-22 At 3:35 PM +0100 3/13/07, Valencic Miha wrote: >All, > >I know there is EF-S 10-22, but I think I heard someting about an EF >(not -S) L-series lens becoming available. I can't seem to find it >though (it is no listed in the offical Canon EF lens lineup), so I guess >I got something wrong. Or did I? > >On that note, does anyone have the EF-S 10-22 and how satisfied are you >with it? > >Thanks, > Miha. I have that lens, as well as some other superwides, and am quite satisfied with it. It is somewhat better overall, on the 20D, than the 16-35/2.8 (not the new one) is on a full frame camera. The build is not quite up to 'L' standards, but is also quite decent and a _lot_ better than something like the 50/1.4. -- * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:[EMAIL PROTECTED] |[ ]| http://www.archiphoto.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm *********************************************************** ____________________________________________________________________________________ TV dinner still cooling? Check out "Tonight's Picks" on Yahoo! TV. http://tv.yahoo.com/ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
