Thanks Bob
That's what I like about these lists, there's always a lot of information and
good ideas to be had.
Sounds exactly like the kind of thing I'd do, I must try it. I actually use my
Nokton 50mm as a loupe when I need one.
When I'm rich and famous I'll buy some really wide wide angles for digital,
which will probably be obsolete by then.
Douglas
Bob Palmieri wrote:
Doug -
If this is any help, in general lenses with lotsa depth of field have very little depth of focus, so nodal-point-to-film-plane distance becomes more critical even at small apertures.
However, last year I had a high-mag copying situation in which I loosely tested various optics in the closet (enlarging lenses, macros, etc. The surprising winner was my 21mm Voigtlander turned around backwards. Some of this was because I needed a really short focal length to get the needed magnification, but still...
Bob Palmieri
On Jan 8, 2005, at 10:28 AM, Thomas Schofield wrote:
Even if the DOF makes it acceptable sharp, it will be a longer focal length, effectively! Most people don't realize focal length is increasing as you focus closer. E.g. 50mm refers to focal length at infinity. In other words, the normal lens has 50mm focal length at infinity, or 100mm focal length at 1:1. Tom
"Douglas M. Sharp" <DouglasMSharp@xxxxxxxxxxxx> wrote: I don't think so Dave , I don't think lens recycling goes that far,but I am thinking of getting an LTM to EOS adapter and messing about a bit with some old Canon screw mount mid-range telephoto lenses for close-ups. Does anyone know what happens if I fit a Voigtläender 12mm or 15mm via one of these to it? would stopping right down take the focus range to infinity? or am I not thinking straight and overlooking something on this idea. Douglas
Dave Saalsaa wrote: > Oh what fun, Douglas. Can you put LTM lenses on it too and still focus > to infinity? > Dave > ----- Original Message ----- From: "Douglas M. Sharp" > > To: > Sent: Saturday, January 08, 2005 8:02 AM > Subject: [LRFlex] Re: leica R lens on Digital boxes - Canoptikum > > >> Just a bit of fun - this is where the Canon beats the excrement out of >> a certain >> other brand - yes, you can put Nikon lenses on it too, it's just that >> I don't have any. (And from what I've heard Canon lenses too) >> http://gallery.leica-users.org/TESTS >> Snapshots, no particular processing, no intention of creating artistic >> or aesthetic images. But isn't the beast versatile!! >> Damn, I forgot to show it with Contax/Yashica lenses!! >> Douglas >> >> Douglas >> Steve Barbour wrote: >> >>> that is ass-kickin' hybrid vigor... >>> >>> predictive of success in future evolutionary struggles... >>> >>> Steve >>> >> ------ >> Unsubscribe or change to/from Digest Mode at: >> www.horizon.bc.ca/~dnr/lrflex.htm >> Archives are at: >> www.freelists.org/archives/leicareflex/ >> >> >> -- >> No virus found in this incoming message. >> Checked by AVG Anti-Virus. >> Version: 7.0.300 / Virus Database: 265.6.8 - Release Date: 1/3/2005 >> >> > > > ------ Unsubscribe or change to/from Digest Mode at: www.horizon.bc.ca/~dnr/lrflex.htm Archives are at: www.freelists.org/archives/leicareflex/
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