[LargeFormat] fresnel screen orientation
john frost
largeformat@f32.net
Thu Nov 6 17:14:07 2003
My Zone VI 4x5 has a plastic fresnel, and the 'smooth' side is
translucent groundglass. the GG side faces the bellows, and the ridges
side gets a clear glass over it. I keep the original GG in a small hard
case in the kit, handy if needed.
john (:>)))
David Swinnard wrote:
> --->
> Sinar had theirs on the human side of the GG so it could be removed, and
> scratched, and broken and replaced at an extreme cost. I suspect that
> Sinar had their rings toward the GG. <---
>
> Yup, Sinar fresnel is "outside" but with rings against the glass. Yup,
> it scratches, a bit, but mine dates from the mid -70s and is still
> perfectly usable. The advantage of having it outside is that it's easy
> to remove when necessary. I've found, over the years, that removing it
> made focusing in some unusual circumstances. The Sinar fresnel pops on
> and off very simply.
>
> Dave
>
>
> Les
>
> On Thursday, November 6, 2003, at 11:44 AM, Vincent Dobson wrote:
>
>
>>Hi,
>>
>>I just bought a camera with a horseman fresnel screen. They had the
>>thin
>>fresnel sandwiched under the groundglass on the film side but with the
>>fresnel groves next to the groundglass. I thought the fresnel groves
>>should
>>be toward the film, but it has been a while.
>>
>>Which way?
>>
>>Thanks all.
>>
>>Vince Dobson
>>Visions In Nature
>>www.VisionsInNature.com
>>
>>
>>
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>
>
>
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