Sir ... I understand what you're saying, but I disagree with you ... at least as to the way you made your statement in your original post.
"J. C. O'Connell" wrote: > > > Addressing JCO's contention that 35mm/3.5 and wide angle lenses are more > > difficult to focus "in any camera". well, that's just plain flat out > > wrong. Apart from wide angle lenses being more forgiving of small > > focusing errors, regardless of the camera to which they are attached, > > there are numerous cameras, Pentax and other brands, in which the choice > > of a proper focusing screen greatly improves the ability to achieve > > critical focus with a wide variety of lenses. So, to say that it's not > > easy to focus these lenses in *any* camera is somewhat misleading. > > > Here's how it works: > > The longer or faster a lens is, the EASIER it is to focus. > The shorter or slower a lens is, the HARDER it is to focus. > Thus for a given focal length, the faster lens is ALWAYS > easier to focus, or for a given lens speed , the LONGER > lens is ALWAYS easier to focus. The 28mm F3.5 and 35 F3.5 > mentioned are both shorter and slower than normal, thus > Much HARDER to focus relative to normal. > > What your talking about above is DOF at shooting aperture > which is different from open aperture focussing. Yes wide > angles give more latitude of focus error, but critical > focus it still 1 point. --- Shel Belinkoff mailto:[EMAIL PROTECTED] http://home.earthlink.net/~belinkoff/ http://home.earthlink.net/~belinkoff/darkroom-rentals/index.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
