Archived posting to the Leica Users Group, 2006/12/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jim, Thanks. All my UV shots were taken with an enlarging lens. I don't know if it's similar to APO quality or not. From what I read there should be a focus shift like IR but there wasn't. Also take a look at the White Barberry photo I posted today. That's an IR photo using the Nikon 85 pc lens. I don't recall shift focusing that photo either. And it's right on. Also no "R" or "Dot" on the focus ring. I did stop down quite a bit though to make sure I had ample DOF and was in focus. Len On Dec 15, 2006, at 10:23 PM, Jim Hemenway wrote: > Len: > > Stunning photos! > > When shooting infrared I have to focus on a different plane than I > do for normal film. I take it then, that you don't find that ultra > violet light has a different focus plane than incandescent light? > > Jim > > Leonard Taupier wrote: > >> The flowers were exposed with Ultra-Violet light from a black >> light in an otherwise totally dark room. >> <http://gallery.leica-users.org/v/LeonardT/UV/UV_1.jpg.html> >> <http://gallery.leica-users.org/v/LeonardT/UV/UV_2.jpg.html> >> Please comment on what you think. >> The camera was a D2X at 20 sec exposure >> Lens an El-Nikkor 105mm f5.6 at f11 mounted in a Nikon PB4 >> bellows with a homemade F to LTM adapter >> Focus was in incandescent light. >> Exposure black light only, using a hot mirror filter and a B+H 403 >> UV bandpass filter. >> No attempt was made to color correct. The 403 filter is a nearly >> black, red filter. >> I tried the same setup using a D200 and even with a 6 stop >> exposure increase no image was produced. Totally black. >> As a retired engineer I can't stop experimenting. I just think >> it's fun. Hope you enjoy it. >> Len > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information