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Photo Forum / Film Photography / Darkroom / February 2006illuminated F/stop dial on my 50mm APO Rodagon N.
The illuminated dial on my Rodagon is not illuminating the F/stops when used on either my durst M605 B&W, or my LPL 670 when I'm doing 35mm. Is there an adjustment or slide I'm not seeing? It never bothered me until I was at the B&H website and was looking at this lenses spec's. Am I missing something other than the illuminating F/stop's? Regards. Bob McCarthy theyankeesnapper@aol.com > The illuminated dial on my Rodagon is not illuminating the F/stops when > used on either my durst M605 B&W, or my LPL 670 when I'm doing 35mm. Is > there an adjustment or slide I'm not seeing? It never bothered me until > I was at the B&H website and was looking at this lenses spec's. Am I > missing something other than the illuminating F/stop's? I might be wrong but I don't think all of the Rodagons are illuminated. I think this was an improvement that was implemented in the last 10 years.  SignatureRegards, John S. Douglas, Photographer & Webmaster http://www.puresilver.org - http://www.legacy-photo.com In my recollection, illuminated stops use enlarger light from around the perimeter of the lens, look at the back of your lens you may see a small clear lens, port or hole that is the entry point for the light that is used to illuminate the stops, if the design of your enlarger is too efficient (think "Durst" masking carriers etc.) about masking off non-image forming light (aka "fog") the stops may not be getting any light. Other designs may use other ways to get the light to the aperture ring, light from outside the image circle perhaps but with some enlargers again there just isn't much "spare" light. Signaturedarkroommike ---------- > The illuminated dial on my Rodagon is not illuminating the F/stops when > used on either my durst M605 B&W, or my LPL 670 when I'm doing 35mm. Is [quoted text clipped - 6 lines] > Bob McCarthy > theyankeesnapper@aol.com <theyankeesnapper@aol.com> wrote in message > The illuminated dial on my Rodagon is not illuminating the F/stops On my 150mm Rodagon there is a plastic piece on the periphery of the rear element mount that needs to be illuminated. When the lens is in an adapter for use in a turret then light no longer gets to this piece and the aperture ring is dark. Take off the lens board and look from the rear: do you see the plastic thingy? You may be able to drill a hole or do some filing to let light in - with a thread adapter that option is out, though. #1) Get some rubylith and re-lens a penlight. #2) Pay someone to do #1 for you: Google for "penlight red" or "penlight safelight", "red flashlight" etc.. I have the penlight tied to a string tied to the enlarger bench. SignatureNicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. To reply, remove spaces: n o lindan at ix . netcom . com Fstop timer - http://www.nolindan.com/da/fstop/index.htm I have a small AA flash that I do the same thing with, though I'm now lusting after a red LED penlight. The little Mag-Lites have a filter kit, not sure how "safe" the red filter in this kit is but for short periods it should do. The flashlight has one other advantage, an illuminated aperture ring is no help at all when you drop your pencil on the floor! Signaturedarkroommike ---------- > <theyankeesnapper@aol.com> wrote in message > > The illuminated dial on my Rodagon is not illuminating the F/stops [quoted text clipped - 13 lines] > > I have the penlight tied to a string tied to the enlarger bench. >I have the penlight tied to a string tied to the enlarger bench. February 11, 2006, from Lloyd Erlick, You know, this solves a problem for me. regards, --le Signature________________________________ Lloyd Erlick Portraits, Toronto. voice: 416-686-0326 email: portrait@heylloyd.com net: www.heylloyd.com ________________________________ > The illuminated dial on my Rodagon is not illuminating the F/stops when > used on either my durst M605 B&W, or my LPL 670 when I'm doing 35mm. Is [quoted text clipped - 6 lines] > Bob McCarthy > theyankeesnapper@aol.com The small rectangular port on the rear surface of your lens is closed off either by a piece of tape - if the lens had been used for macro or reversed, or by the lens flange. The only other reason was your buying a used lens that was scavanged from some type of scanner for industrial applications. Those versions did not have the illuminated aperture or the pre-set aperture control or the dis-engageable click stops. SignatureTo reply no_ HPMarketing Corp. Hi: I bought this lens new about 10 years ago, APO-Rodagon N 50mm F2.8, serial #11217832. I can see the rectangular port and its clean and clear, could my lens be defective? Regards. Bob McCarthy > I bought this lens new about 10 years ago, APO-Rodagon N 50mm F2.8, > serial #11217832. > I can see the rectangular port and its clean and clear, could my lens > be defective? APO ? Oh yeah it must be broken ah, eh, letsee, I'll give you $50 for it in light of the lack of light ! ;>) Seriously, there must be something obstructing the light path. SignatureRegards, John S. Douglas, Photographer & Webmaster http://www.puresilver.org - http://www.legacy-photo.com check for something in the enlarger that may be blocking the light from getting to the light port. Signaturedarkroommike ---------- > Hi: > [quoted text clipped - 6 lines] > > Bob McCarthy > The illuminated dial on my Rodagon is not illuminating the F/stops when > used on either my durst M605 B&W, or my LPL 670 when I'm doing 35mm. Is > there an adjustment or slide I'm not seeing? It never bothered me until > I was at the B&H website and was looking at this lenses spec's. Am I > missing something other than the illuminating F/stop's? One of my lenses, not a Rodagon, has such a light, but so little light hits the window that it is useless. One of my Beseler lens boards has a light, too, but same problem. I just count clicks. Most lenses are 1 f-stop apart, but one lens is 1/2 f-stop. Lots less bother. Signature.~. Jean-David Beyer Registered Linux User 85642. /V\ PGP-Key: 9A2FC99A Registered Machine 241939. /( )\ Shrewsbury, New Jersey http://counter.li.org ^^-^^ 20:50:00 up 1 day, 7:19, 3 users, load average: 4.27, 4.16, 4.05 > I just count clicks. Most lenses are 1 f-stop apart, but one lens is 1/2 > f-stop. Lots less bother. I just leave mine set to one aperture unless I'm printing color. 2 stops down from wide open. SignatureRegards, John S. Douglas, Photographer & Webmaster http://www.puresilver.org - http://www.legacy-photo.com > One of my lenses, not a Rodagon, has such a light, but so little light > hits > the window that it is useless. One of my Beseler lens boards has a light, > too, but same problem. Exactly. It's basically a useless feature. It only "works" when you're making the exposure. What's the point? > [Rodagon enlarging lens aperture light-pipe] > Exactly. It's basically a useless feature. It only "works" when you're > making the exposure. What's the point? Focus, stop down, then turn off the enlarger? FWIW, I like the feature. SignatureNicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. To reply, remove spaces: n o lindan at ix . netcom . com Fstop timer - http://www.nolindan.com/da/fstop/index.htm > Exactly. It's basically a useless feature. It only "works" when you're > making the exposure. What's the point? I don't have any problems seeing the digits on my Schneiders or my Nikkor. As stated previously, I don't change the apertures much anyway but I can always take a look at them in the dark and tell what the setting is. SignatureRegards, John S. Douglas, Photographer & Webmaster http://www.puresilver.org - http://www.legacy-photo.com > The illuminated dial on my Rodagon is not illuminating the F/stops when > used on either my durst M605 B&W, or my LPL 670 when I'm doing 35mm. Is [quoted text clipped - 6 lines] > Bob McCarthy > theyankeesnapper@aol.com It depends on the density of your negative. Less dense negatives pass more light to the window. That's been my experience with my 80mm Rodagon on my Bessler 23c, anyway. SignatureRegards, Matt Clara www.mattclara.com |
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