Why must the viewfinder optics for the eye be shared with the laser? Just put the laser below or above, though as near as possible. Of course. magnification can be included. With separation you have no danger to the eye except maybe if you measure the distance to a mirror!
Bob At 20:09 17.12.01 -0500, you wrote: >Robert Stoddard wrote: > > > > Marv, > > As I recall the Focuspot, the light source sat on the top end of the > > vertically mounted RF and shone its light through a little transparent port > > directly along the axis of the RF. Because of the beam-splitter mirror, > > half of the light emerged from the top window of the RF, half through the > > bottom window. When the camera was focused, the two beams converged on the > > subject. > > If you are putting your laser light source in the same location, then how > > is there any danger of light coming out the eyepiece? > > RKS > > > > >From: Marv Soloff <[EMAIL PROTECTED]> > > >Reply-To: [EMAIL PROTECTED] > > >To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> > > >Subject: [Cameramakers] Use of pocket Lasers with rangefinder cameras > > >Date: Mon, 17 Dec 2001 18:01:51 -0500 > > > > > >Had an opportunity to buy a handfull of pocket lasers the other day. > > >These are marketed as a "laser keychain" and measure 2-1/2" long by > > >1/2" in diameter. > > > > > >I had remembered that Kalart made an accessory for the Kalart > > >rangefinder equipped Graflex press cameras that used a battery and > > >focused lamp to project a pair of light beams for focussing in low level > > >light conditions. > > > > > >When Kalart manufactured its own press camera, the Kalart 3 x 4, this > > >device was an integral part of the camera. > > > > > >So, the question arose - can a small laser be used thru the rangefinder > > >port to provide low light level focus? > > > > > >Well, I tried it and it works. The only problem is to fabricate a fail > > >safe blocking plate that prevents looking thru the rangefinder when the > > >laser is in operation. Perhaps a slide switch arrangement? > > > > > >The cost of the keychain lasers - at the Englishtown (NJ) flea market > > >$2.00 each including 3 LR44 batteries. > > > > > >Regards, > > > > > >Marv > > >_______________________________________________ > > >Cameramakers mailing list > > >[EMAIL PROTECTED] > > >http://rmp.opusis.com/mailman/listinfo/cameramakers > > > > _________________________________________________________________ > > MSN Photos is the easiest way to share and print your photos: > > http://photos.msn.com/support/worldwide.aspx > > > > _______________________________________________ > > Cameramakers mailing list > > [EMAIL PROTECTED] > > http://rmp.opusis.com/mailman/listinfo/cameramakers > >Just tried it on the 23 Crown Graphic - there is too much backscatter >thru the viewing lens of the rangefinder for comfort. I, for one, >approach lasers with great caution. The adapter will have a shutter for >the viewing window coupled to the laser power switch. > >Regards, > >Marv >_______________________________________________ >Cameramakers mailing list >[EMAIL PROTECTED] >http://rmp.opusis.com/mailman/listinfo/cameramakers _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
