[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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