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Photo Forum / Film Photography / Darkroom / February 2004Lens board illuminator
I found a used Beseler 45M enlarger. Now I'm looking for a lens board for it. I noticed some lens boards come with an "illuminator". What is that for and how is it used? On 2/25/2004 10:17 PM drhowarddrfinedrhoward spake thus: > I found a used Beseler 45M enlarger. Now I'm looking for a lens board for > it. I noticed some lens boards come with an "illuminator". What is that > for and how is it used? It's a little plastic piece that goes through the board, basically a light pipe that shines light (from behind the lens) on the aperture scale so you can see it.  SignatureIt's fun to demonize the neo-cons and rejoice in their discomfiture, but don't make the mistake of thinking US foreign policy was set by Norman Podhoretz or William Kristol. They're the clowns capering about in front of the donkey and the elephant. The donkey says the UN should clean up after them, and the elephant now says the donkey may have a point. Somebody has come out with a dustpan and broom. - Alexander Cockburn, _CounterPunch_ (http://www.counterpunch.org), 9/17/03 > On 2/25/2004 10:17 PM drhowarddrfinedrhoward spake thus: > [quoted text clipped - 6 lines] > light pipe that shines light (from behind the lens) on the aperture > scale so you can see it. Except they are never bright enough to see the scale in the dark. So I just count clicks. One of my lenses permits me to turn off the click-stops, but I do not do that. Signature.~. Jean-David Beyer Registered Linux User 85642. /V\ Registered Machine 73926. /( )\ Shrewsbury, New Jersey http://counter.li.org ^^-^^ 1:25pm up 51 days, 46 min, 2 users, load average: 2.07, 2.12, 2.00 On 2/26/2004 10:26 AM Jean-David Beyer spake thus: >> On 2/25/2004 10:17 PM drhowarddrfinedrhoward spake thus: >> [quoted text clipped - 10 lines] > So I just count clicks. One of my lenses permits me to turn off the > click-stops, but I do not do that. The best solution is Rodenstock's "pre-set" aperture lock; set it, and one simple twist and you're at your selected stop. Now if only my other lenses had that feature ... SignatureIt's fun to demonize the neo-cons and rejoice in their discomfiture, but don't make the mistake of thinking US foreign policy was set by Norman Podhoretz or William Kristol. They're the clowns capering about in front of the donkey and the elephant. The donkey says the UN should clean up after them, and the elephant now says the donkey may have a point. Somebody has come out with a dustpan and broom. - Alexander Cockburn, _CounterPunch_ (http://www.counterpunch.org), 9/17/03 > > > Beseler lens boards come with an "illuminator". > Except they are never bright enough to see the scale in the dark. Agreed. Probably has to do with fogging color paper if they were brighter. But then, most modern lenses have illuminated f-stops making the Beseler illuminator redundant. > So I just count clicks. That I don't do, what with two turrets worth of lenses the internal dialog goes as: "Lets see, the 135 is an f4, or is it an f5.6, and are the clicks full stop or half stop? They are half stop on the 105 so ... no that one's a Rodenstock and this ones a Nikkor ... or is it the other way around. Turn on the bloody light..." I like the illuminated f-stop dials on most lenses. On the ones that aren't illuminated I now use a little homemade red LED penlight. I invariably have the 'Did I stop the lens down doubts' as my finger hovers over the timer's 'expose' button. SignatureNicholas O. Lindan, Cleveland, Ohio nolindan@ix.netcom.com Consulting Engineer: Electronics; Informatics; Photonics. > I invariably have the 'Did I stop the lens down doubts' as my > finger hovers over the timer's 'expose' button. Modern optics like the Rodagon, Apo-Rodagon, etc. have not only an illuminated aperture but also a dis-engageable click stop control and a pre-set aperture which allows you to go directly between open aperture and the aperture you want to print at. This takes away those doubts. SignatureTo reply no_ HPMarketing Corp. > I found a used Beseler 45M enlarger. Now I'm looking for a lens board for > it. I noticed some lens boards come with an "illuminator". What is that > for and how is it used? It shines a little red light on the f stop numbers when the enlarger light is on so you can read them in the dark. Just count clicks as you turn the ring instead.. SignatureRobert D Feinman robertdfeinman@netscape.net Landscapes, Cityscapes, Panoramas and Photoshop Tips http://robertdfeinman.com Thanks guys. Is the light a concern when doing color development? > Is the light a concern when doing color development? I did color enlarging with the illuminated lensboards for years without issues; never thought about it until now. Still, theoretically you MIGHT get a little scatter - not that the illumination was all that useful anyway, at least with my eyes. I always counted clicks. > Thanks guys. > > Is the light a concern when doing color development? Some of my lensboards have it. They were all bought used and in every case the thing was blocked up one way or the other so it doesn't work. So somebody decided it wasn't worth having. I doubt the light would effect colour too much. Some of the newer lenses light up the aperture. Nick |
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