Archived posting to the Leica Users Group, 1999/01/15

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Subject: Re: [Leica] V35
From: "Robert G. Stevens" <>
Date: Fri, 15 Jan 1999 18:48:29 -0400


You have the wrong bulb in the enlarger, or there are other problems.  I do
11X14 prints in the 30 sec range at F8-F11.  These bulbs have parabolic
reflectors that have a certain focus point.  The wrong bulb will not focus
the light at the proper spot in the optical path.  The proper bulb for the
current enlargers is a phillips 13139.  Older enlargers took a different
bulb which is no longer available.  I needed to get an adapter for my V35
to take the 13139.  The newer lamps mount in a sub assembly of a bulb
holder and retaining ring  which puts the 13139 at the proper focus point.
The older bulbs were just put into the lamp house and a retainer ring
screwed into the lamphouse heatsink to hold the lamp in.  The newer enlargr
also has the bulb type on the plastic cover which gives access to the lamp
wiring and mounting.



  At 02:19 PM 1/15/99 -0800, you wrote:
>Has anyone ever tried a brighter bulb in their V35? I am doing 16x20
>Ilfochromes through Velvia, a well "saturated" film which gives glorious
>colors on the print, but takes really long exposures. In fact, most
>exposures are around two minutes at f4 and some burn in sections take as
>long as five minutes!
>The bulb is new (I have tried three new bulbs), no haze in the lens, and I
>am getting well into the reciprocity failure area of Ilfochrome paper.  The
>prints I do get are very sharp, colors look vibrant, I just seem to be over
>the limits of practical use of the V35. Any ideas?
>Congrats, Mary, on getting out some good prints on your new V35!
>Gary Todoroff
>Tree LUGger
>> From: Robert G. Stevens 
> The newer enlargers will have the bulb type
>> 13139 printed on the cover to the bulb housing.  Other than the bulb,
>> there is no difference between them.