Film-Tech Forum ARCHIVE: Realligning Scope lens on V8

This is topic Realligning Scope lens on V8 in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Ross McLaughlin (Member # 6774) on 05-28-2012, 07:40 PM:

Hi,
Just after a quick piece of advice. Our scope lens on our Victoria 8 twin-lens turret is playing too low (it's not the racking). The guy who was in charge before me reckons it was changed by the guys who installed our Technicolor 3D lens (what a waste of time that was).

As i'm now sure I won't be using the 3D lens again, i'm looking to reallign the scope lens so I don't have an ugly blank space at the very top of the screen - but don't know how to do this myself. Has anyone got experience of this that could helpfully shed some light my way?

Many thanks.

Posted by Victor Liorentas (Member # 5272) on 05-28-2012, 08:14 PM:

It depends on what type of turret you have. If its the type I have you should see tiny Allen keys on the outside round of the turret,2 per lens. Loosen those nearest scope lens. Then there are concentric screw adjustments above and below the lens turret front with your back to the screen. One moves lens side to side, the other up and down. At the end you will have to re straighten the scope lens. Do this at the end of night with a film loop running.

Posted by Leo Enticknap (Member # 534) on 05-30-2012, 12:21 PM:

As Victor points out, unless the anamorph is on a separate bracket that swings into place and the prime lens is in the turret, adjusting the position of the lens barrel in the turret will also throw out the horizontal position of the anamorph, with the result that you'll have to realign it using a test film (e.g. RP-40).

If the prime backing lens and anamorph are in a single unit (or are separate but screwed together), might it be a bit easier to adjust the height of the projector pedestal to get the vertical position of the 'scope picture right, and then adjust the other prime lens(es) in the turret using the method Victor describes?

Posted by Louis Bornwasser (Member # 3063) on 05-30-2012, 08:20 PM:

The scope lens should not be used to change elevation. In fact, the backup lens should be used alone and the center of the test film marked on the screen. The anamorphic should then be adjusted so that the centers agree. Then aim the overall projector. louis

Posted by Ross McLaughlin (Member # 6774) on 06-06-2012, 06:57 PM:

Thanks for the advice guys.
Been away from a pc for a few days so missed all but Victor's responses, but it worked at treat. Really great, thanks.