Re: [APML] 35 mm Camera & Focuser

["John C. Mirtle" <spampit@shaw.ca>]

Stuart,
    I doubt that the 6x magnifier will focus if you remove the pentaprism. I
use the magnifier because I have not had luck with a SureSharp or the Hutech
piece. The knife edge focuser with my cold camera was great, using a
different camera body. I am beginning to suspect that my OM1 was dropped too
many times and the flange/rail distance has changed. Time to recalibrate. Of
the 3 knife edges I have used, I prefer the Hutech unit. The round knife
edge makes it very, very easy to use.

John Mirtle
Calgary, Ab. Canada

----- Original Message ----- 
From: "Stuart Heggie" <stuart.j.heggie@sympatico.ca>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Saturday, December 13, 2003 4:04 AM
Subject: Re: [APML] 35 mm Camera & Focuser


> John, for those of us with cameras with removable pentaprisms, would this
> thing plunked directly down onto the focus screen work? I'm still shooting
> piggyback so I've focussed using the the Hartmann mask technique but when
I
> finally make the jump to prime focus, I think I'll need something better
> than what I've got.
>
> Anyone else, I've got two Nikon F2's so if there is another means that
works
> for sure on this camera, I'd love to know it - mostly what I read is that
I
> buy a loupe and file it down to fit into the top of the camera and rest on
> the focus screen - if I get one that is adjustable, is that better so that
I
> don't have to fine tune the filing job for height?
>
> Stuart

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