[pure-silver] Re: My first post

["Richard Knoppow" <dickburk@xxxxxxxxxxxxx>]

----- Original Message ----- 
From: "Pablo Kolodny" <pkolodny@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, June 13, 2007 7:09 AM
Subject: [pure-silver] My first post


> Hi,
>
> this is my first post to the list though it's some time 
> back when I started
> reading tons of very useful and helpful messages found 
> here.
> I'm an argentinean photographer working in Buenos Aires 
> city and as I've
> just got a new old Imagon lens I've never worked with I'd 
> like to hear
> others in case some of you have some first hand 
> experiences with the Imagon
> lens.
>
> Mine is a 250 mm coming with three disks to slip on the 
> front of the lens
> and a 4X neutral density filter. Everything in a box and 
> the whole is made
> by Rodenstock.
>
> One thing I'm afraid I'm not getting is that the lens does 
> have an iris and
> an iris lever which works very smoothly though there's no 
> scale at that.
> This lens is intended to be a soft lens though it behaves 
> in a special way,
> the softer image produced by the holes present in those 
> disks superimpose to
> the sharper one instead of those regular portrait lenses 
> that actually
> soften the whole image, no sharpness at all present when 
> working with them.
> Only thing I can add now is that it comes mounted on a 
> Compound shutter with
> speeds ranging from 200th to 1 sec plus B and T settings.
>
> Any comment will be strongly appreciated.
>
> TIA
>
> Pablo
> www.pablokolodny.com
  Pablo, good to see a familiar name here, welcome 
aboard:-)
  The Imagon is a unique lens, the partial stops with the 
holes in them serve a double purpose: they control the 
amount of light coming through the periphery of the lens, 
thus the amount of spherical aberration, and they add some 
diffusion since the holes act something like an array of pin 
hole lenses. There are a couple of catalogues and an 
instruction book for the Imagon at the Camera Eccentric web 
site:
http://www.cameraeccentric.com  These should give you a good 
idea of how to use the lens.
  The Compound shutter made its first appearance about 1905 
and was built until at least the mid 1980's. It uses an air 
brake for speed regulation. When clean and properly adjusted 
the shutter is pretty accurate and quite consistent. The 
shutter and diaphragm blades of some Compounds, particularly 
the larger and older ones, are made of fiber or hard rubber 
and are heat sensitive. Be careful of with what you clean 
them.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx


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• Follow-Ups:
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• References:
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    • From: Pablo Kolodny

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