Archived posting to the Leica Users Group, 2002/11/07

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Subject: Re: [Leica] Leitz V35: typical exposure times?
From: S Dimitrov <sld@earthlink.net>
Date: Thu, 07 Nov 2002 07:23:10 -0800
References: <Pine.BSF.4.21.0211071109090.2152-100000@birdland.jangowski.de>

If you haven't already done so, you will have to replace the old bulb.
An old bulb might sometimes be dim, due to usage and age, by as much as
two stops.
Slobodan Dimitrov

Martin Jangowski wrote:
> 
> Hi all,
> 
> after getting in the Leitz/Leica mood, I recently bought a very good
> looking Leitz V35 enlarger with the WA-Focotar and the color module.
> The lens looks very fine, and a look with the Peak #1 showed some
> curvature of field, but the test prints were exceptionally sharp.
> 
> However, after using a Durst G139 with CLS 1000 for all my MF and LF work,
> the V35 exposure times even with comparable tiny paper sizes seem very
> long to me. Ok, I can't compare the small 75W bulb with the CLS 1000
> (1kW), but an 20x30cm-enlargement (that's about my standard size) from a
> negative with normal density and without filtering, using the Focotar at
> f4-5.6 takes exposure times around 25-50s for AGFA MCP. The same negative
> at the Durst with the 24x36 mixing box isn't useable without neutral
> density filter, because it takes much less than 1s at the same f-stop
> with a 50mm lens!
> 
> So, the V35 seems not very bright to me... I checked the bulb and found
> an Osram bulb, but this seems to be the correct replacement for the
> original Philips (13139?) bulb.
> 
> Could someone enlighten me, I don't know what else to check... Is this
> the correct light level for the V35?
> 
> Martin
> 
> | Martin Jangowski                         E-Mail: Martin@Jangowski.de|
> |                        Netzwerke und Multimedia                     |
> | Voice: +49 7946/940790                         Fax: +49 7946/940791 |
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> 
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Replies: Reply from "Gary Todoroff" <datamaster@humboldt1.com> ([Leica] Re: Leitz V35: typical exposure times?)
In reply to: Message from Martin Jangowski <martin@jangowski.de> ([Leica] Leitz V35: typical exposure times?)