Archived posting to the Leica Users Group, 2011/04/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]How does one calculate the effective length of a pinhole? Is the "body cap" distance the "normal" distance for most format? e.g. 50mm for SLR? And how is the size of image circle calculated? On Wed, Apr 27, 2011 at 8:10 PM, Jayanand Govindaraj <jayanand at gmail.com>wrote: > Ken, > Nice shots. I was also thinking of buying this - it is inexpensive enough > for an experiment! > Cheers > Jayanand > > On Thu, Apr 28, 2011 at 5:19 AM, Ken Carney <kcarney1 at cox.net> wrote: > > > Jayanand, > > > > Thanks for posting, I may give this one a try. I like pinhole, but only > > wide angle pinhole. My favorite pinhole camera is a Leonardo 4x5" with > a > > 1.5" focal length, which is roughly 15mm in 35mm terms. I have an 8x10" > > pinhole with the same approximate equivalent. 22mm is not as good as > 15mm, > > but a whole lot better than 50mm, which is what you get with the SLR > pinhole > > caps. > > > > Here is an 8x10 "super" wide angle image: > > http://www.kencarney.com/Places/tif_0025_std.html > > And one with the Leonardo 4x5: > > http://www.kencarney.com/Nature/psd_0041_std.html > > > > Best, > > > > Ken > > > > > > > > On 4/27/2011 12:07 AM, Jayanand Govindaraj wrote: > > > >> Looks interesting: > >> > >> > >> > http://theonlinephotographer.typepad.com/the_online_photographer/2011/04/pinwide.html > >> > >> http://wanderlustcameras.com/ > >> > >> Cheers > >> Jayanand > >> > >> _______________________________________________ > >> Leica Users Group. > >> See http://leica-users.org/mailman/listinfo/lug for more information > >> > >> > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- // richard <http://www.imagecraft.com/> // icc blog: <http://imagecraft.com/blog/> // photo blog: <http://www.5pmlight.com> [ For technical support on ImageCraft products, please include all previous replies in your msgs. ]