Archived posting to the Leica Users Group, 2001/02/27

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Subject: Re: [Leica] Re: Focussing cine-camera lenses
From: Dan Cardish <dcardish@sympatico.ca>
Date: Tue, 27 Feb 2001 14:07:39 -0500
References: <200102270010.QAA27616@mejac.palo-alto.ca.us>

Isn't there actually a person on movies sets whose job it is to focus the
lens to the preset marks during filming?  And I mean in addition to the
cameraman, who is too busy watching the scene itself?

dan c.

At 06:19 PM 27-02-01 -0000, Doug Richardson wrote:
>Recently there was some discussion on the LUG concerning the focussing
>techniques used with cine cameras, and the fact that lenses were
>scale-focussed to pre-measured distances.
>
>If any LUG members are involved in the cinema industry, could they
>tell me:
>
>If the lenses are manually focussed to preset distances, does that
>mean that the focussing is engraved to be read by someone standing in
>front of the lens, rather than by someone standing behind the camera -
>i.e the distance values are engraved 'upside-down' compared with those
>on a 35mm still camera lens?
>
>Do cine lenses have depth-of-field markings similar to those on
>still-camera lenses?
>
>The reason for these questions is that I have an old lens can be
>screwed into a Leica, but which has no DOF markings, and has a
>focussing scale engraved to be read from the front.
>
>Given these odd features, I'm wondering if it may have been a cine
>lens which has been adapted for use on the Leica.
>
>Regards,
>
>Doug Richardson
>
>
>
>