CompuServe Thread

Forum unknown · Videophile

#Lens Tip

5 messages in this thread
#105662From: Joel "Walrus" SalazarJan 27, 1988 5:23 AM
Mike, in addition to using a lens from a 35mm camera, NewTec says they Digi-View slides on a light-table (4×5 slides mostly, some 2×2) to get the great pics in their demos. Has anyone else been doing this? I've just started experimenting, and I think the quality from slides will be much better than from a print; lot of variables involved though and I haven't worked all of them out yet. If anyone else uses slides as the subject, please post a description of your setup and any hints or tips. Thanks,
#105703From: Mike SchulteJan 27, 1988 3:04 PM
You just gave me an idea. I have a slide duplicator accessory for my camera. I think I'll put it on and see how it works. Only problem I can forsee is that it's fixed focus and the adapter plus the different focal plane position of the video camera might not work out. I'll let you know. I also have a slide sorter around somewhere I could try as a backlight, that with wy 210mm lens might work for slides. Mike
#105703From: Mike SchulteJan 27, 1988 3:04 PM
You just gave me an idea. I have a slide duplicator accessory for my camera. I think I'll put it on and see how it works. Only problem I can forsee is that it's fixed focus and the adapter plus the different focal plane position of the video camera might not work out. I'll let you know. I also have a slide sorter around somewhere I could try as a backlight, that with wy 210mm lens might work for slides. Mike
#105926From: Mike SchulteJan 28, 1988 2:05 PM
Well, I tried my slide duplicator and the focus problem was solved with an adjustment to the mechanical focus of the camera tube, however I did forget one other thing — because of the difference in the diagonal measure of the pickup device (film approx 50mm, camera tube approx 17mm) there is an inherent 3 times magnification of the slide. The result is that only about 1/9 the area of the slide comes through. If I can ever find my slide sorter or some other good even backlight I'll try slides again. This time with a regular lens with some closeup adapters. Mike
#105926From: Mike SchulteJan 28, 1988 2:05 PM
Well, I tried my slide duplicator and the focus problem was solved with an adjustment to the mechanical focus of the camera tube, however I did forget one other thing — because of the difference in the diagonal measure of the pickup device (film approx 50mm, camera tube approx 17mm) there is an inherent 3 times magnification of the slide. The result is that only about 1/9 the area of the slide comes through. If I can ever find my slide sorter or some other good even backlight I'll try slides again. This time with a regular lens with some closeup adapters. Mike