[LargeFormat] multi coating

Les Newcomer largeformat@f32.net
Sat Dec 1 19:23:13 2001


Okay so where does one go to get a lens multi coated?

les
Ken Hough wrote:
> 
 I disassembled it and had it multi coated.

> Ken
> 
> From:                   "Clive Warren" <mobilton@hotmail.com>
> To:                     largeformat@f32.net
> Subject:                [LargeFormat] Focus Shift on Stopping Down
> Send reply to:          largeformat@f32.net
> Date sent:              Sat, 01 Dec 2001 11:28:46 +0000
> 
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> 
> We have heavy rain here in Bristol this weekend - at least it's not too cold
> - the British obsession with weather is really only due to the large number
> of wet weekends in Winter and sunshine during the week - for me that is when
> you can't take the time out to do personal photography.....
> 
> Anyway, on this rather damp Saturday morning I was wondering about focus
> shift on stopping down. Some lenses are more affected by this than others -
> can be a bit of a pain if you are using compact field lenses that have small
> apertures. Checking the ground glass is difficult enough when wide open, let
> alone checking for focus at smaller apertures.
> 
> So, which lense types are most affected by focus shift?  For example the
> very bright Wollensak Velostigmat Series II 12" is affected....
> 
> Anyone have rules of thumb?
> 
> Cheers,
>        From the rain soaked leave strewn streets of Bath today,
> Clive
> 
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>         ******Ken Hough Photographic Repair******
>          Specializing in Deardorff Refinishing
>           Lens Recementing and Shutter repair
>           Contribitor to McKeowns Price Guide
>                    Deardorff Section
>            Custom machined Photographic items
>            Text Contents Copyright 1999 KHPR
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>                    Est. 1980
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