If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Lens 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? |
#2
|
|||
|
|||
Lens board illuminator
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. -- It'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 |
#4
|
|||
|
|||
Lens board illuminator
Thanks guys.
Is the light a concern when doing color development? |
#5
|
|||
|
|||
Lens board illuminator
In article m,
drhowarddrfinedrhoward wrote: 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. |
#6
|
|||
|
|||
Lens board illuminator
drhowarddrfinedrhoward wrote:
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 |
#7
|
|||
|
|||
Lens board illuminator
David Nebenzahl wrote:
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. 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. -- .~. 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 |
#8
|
|||
|
|||
Lens board illuminator
On 2/26/2004 10:26 AM Jean-David Beyer spake thus:
David Nebenzahl wrote: 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. 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. 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 ... -- It'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 |
#9
|
|||
|
|||
Lens board illuminator
"Jean-David Beyer" wrote
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. -- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. |
#10
|
|||
|
|||
Lens board illuminator
In article .net,
"Nicholas O. Lindan" wrote: 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. -- To reply no_ HPMarketing Corp. |
Thread Tools | |
Display Modes | |
|
|