Archived posting to the Leica Users Group, 2009/11/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]No really sure about that. But I do know Marty modified several long Canon lenses to Nikon mount. Stop-down metering...I took one of my more famous photos with one of those lenses mounted on a motorized F2. Roger Hart Detroit On Tue, Nov 17, 2009 at 2:02 PM, slobodan Dimitrov <s.dimitrov at charter.net>wrote: > I seem to recall a Popular Photo article from the 70's that talked about > Nikons being modified. > Wasn't there some connection to the photography of an "eyes only" document > in Kissinger's hand with those cameras? > S.d. > > > On Nov 17, 2009, at 10:55 AM, Roger Hart wrote: > > The Associated Press hired Forscher to modify a bunch of long Canon glass >> (like the 800mm F/5.6) to Nikon mount. I believe the lenses were modified >> for shooting the 1980 Olympics, and then were put into the equipment >> locker >> in New York and shipped out for various assignments. I used the 800 >> several >> times shooting auto racing in the 1980s. >> >> >> >> On Mon, Nov 16, 2009 at 6:24 PM, Lawrence Zeitlin <lrzeitlin at gmail.com >> >wrote: >> >> Slobodan writes: >>> "Didn't Forscher modify a Nikon with lights, in order irradiate the >>> >>> elmusion for low light shooting?" >>> >>> ------- >>> >>> I don't know if Forscher was the first to do this but pre-exposure and >>> latensification used to be old tricks of available light photographers >>> and >>> cinematographers to eke out the last residue of sensitivity of films. >>> Pre-exposure involved exposing the film to low light levels either prior >>> or >>> after exposure. The idea was to get the image exposure over the toe of >>> the >>> sensitivity curve. It effectively provided an increase in apparent >>> sensitivity of 1/2 to a full stop. Latensification involved exposing the >>> film to mercury or ammonia vapors prior to exposure. It could also gain a >>> one stop increase in sensitivity. These techniques are rarely used today >>> in >>> this era of ultra high speed films. You can find more about them by >>> looking >>> through old photo books and magazines. The use of lights in cameras was >>> described in 1950s era magazines such as "35 MM Photography". >>> >>> One construction article suggested gluing 4 grain of wheat incandescent >>> bulbs on the inside of a Leica M camera near the corners of the frame. >>> The >>> lights would be illuminated briefly by a battery switched on by the flash >>> contacts. The article suggested that this would work well with B&W film >>> but >>> might give problems with color film because the lights would upset the >>> color >>> balance of daylight emulsions. >>> >>> I never tried gluing bulbs to the inside of my camera but I did >>> experiment >>> with pre-exposure and latensification. Both worked but there was too much >>> variability in the process and it proved to be far more trouble than it >>> was >>> worth. >>> >>> Larry Z >>> >>> >>> _______________________________________________ >>> 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 >