Film-Tech Forum ARCHIVE: Alignment of Manual Lens Turret -- Prevost P-93

This is topic Alignment of Manual Lens Turret -- Prevost P-93 in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Manny Knowles (Member # 1171) on 07-20-2003, 03:58 PM:

How the HECK do you align the lenses on a Prevost P-93 so that they both centre the image on-screen?

Posted by Gordon McLeod (Member # 33) on 07-20-2003, 04:14 PM:

I assume one lens is lineing up?
On the P55's I used to put a layer of film on one side of the lens as I slid it into the turret to shim it over
estar film makes good stable shims [Smile]

Posted by German Marin (Member # 918) on 07-20-2003, 05:20 PM:

Try aligning here, there's a flat and scope one. I've done this with an align-O-tron pointing back to lamphouse and I centered each lens to apperture plate and lamphouse mirror. Then turn the align-O-tron to screen to center the projector.

Posted by Manny Knowles (Member # 1171) on 07-20-2003, 06:06 PM:

Interesting: Mine don't have those adjustment knobs. I guess I will have to go with the "shims" as Gord suggests.