Archived posting to the Leica Users Group, 1997/07/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]From: "Roger Beamon" <beamon@primenet.com> Date: Wed, 2 Jul 1997 18:13:00 -0700 On 2 Jul 97, Patrick Sobalvarro wrote: > P.S. A note about lens hoods: the day I bought the lens, I bought > a > non-Leica frustum-shaped hood that fit it. I worried that > this quite narrow hood would cause vignetting, and so I later > bought a Leica hood when I finally found one at a > "reasonable" price, but now I see that either hood works > fine, with no noticeable difference. So don't be worried > about vignetting with those little non-Leica frustum-shaped > hoods that say "fuer Summarit" on them. I think you may mean, by frustum, Pat, a cut off pyramid, therefore a square cornered hood, though I know the word frustum as meaning a cut off pyramid OR cone. To me, it could mean either a conical or squarish hood. C'mon, Godfrey, my mathematician friend, what is a frustum usually? Whoops -- sorry to be ambiguous. I meant a truncated cone -- I hadn't known about the truncated-pyramid meaning of frustum until you mentioned it. The sad thing is that I thought I was disambiguating things by saying "frustum" for the non-Leica hood, by contrast with the rectangular hood that Leica make (which is more of a truncated pyramid). Anyway. The non-Leica hood is a truncated cone, and it screws in, and works fine. But it isn't as pretty as the rectangular metal Leica hood, which fits around the lens barrel, has a nice cut-out where it would block the viewfinder, and is rare and typically expensive. - -Patrick