[LargeFormat] 7" Gundlach Radar Anastigmat Extreme W.A. 8x10 f16

[Timothy Atherton]

thanks Richard,

it's a later "Freeport"

I can definately get reflections 2+1 on one element - on the other I'm not
100% sure could only be 2? very hard to see a fainter third one

tim

> -----Original Message-----
> From: largeformat-bounces at f32.net [mailto:largeformat-bounces at f32.net]On
> Behalf Of Richard Knoppow
> Sent: August 23, 2005 8:41 PM
> To: f32 Large Format Photography Mail List
> Subject: Re: [LargeFormat] 7" Gundlach Radar Anastigmat Extreme W.A.
> 8x10 f16
>
>
>
> ----- Original Message -----
> From: "Timothy Atherton" <tim at KairosPhoto.com>
> To: "f32 Large Format Photography Mail List"
> <largeformat at f32.net>
> Sent: Tuesday, August 23, 2005 6:44 PM
> Subject: [LargeFormat] 7" Gundlach Radar Anastigmat Extreme
> W.A. 8x10 f16
>
>
> > anyone know anything about this lens - seems to cover 8x10
> > nicely with room
> > for some movements
> >
>  Neither my old Gundlach-Manhattan catalogue of the
> _Handbook of Photography_ Henney and Duddley shows the
> construction of this lens but it is undoubtedly a copy of
> the Zeiss Protar wide angle lens. The catalogue gives the
> coverage as 90degrees but no information.
>   If the focal length is marked 7 inches it is a slightly
> different lens than the ones listed in the 1927 catalogue,
> where the closest is 6-1/4 inches (for 8x10).
>   You can get a very approximate date of the lens by the
> city listed on the front ring. The original Gundlach company
> was in Rochester. It was resurected in the mid or late 1930s
> in Freeport N.Y., near Rochester.
>   Ernst Gundlach, the founder of this and several other
> companies, was a specialist in modifying existing lenses in
> order to avoid patent infringment. It would be interesting
> to know what the construction of this lens is. Shine a
> flashlight at the cells and count the reflections. Glass-air
> surfaces are very bright (even when coated) and cemented
> surfaces are quite dim. A W.A. Protar should have two bright
> and one dim reflection in each cell.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk at ix.netcom.com
>
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