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Posted by JoeBloe on 10/14/06 01:54
On Fri, 13 Oct 2006 14:15:10 GMT, "David McCall"
<david_____@techshop.net> Gave us:
>
><furles@mail.croydon.ac.uk> wrote in message
>news:1160744648.245160.62770@b28g2000cwb.googlegroups.com...
>>
>> David McCall wrote:
>>
>>> But you knew all of that anyway. The 3 bladed shutter in the
>>> projector doesn't affect your perception of motion. It alters
>>> the flicker rate to make it fast enough that most people will
>>> accept it as a solid (non flickering) image on the screen.
>>
>> I agree with most of what you wrote; but most cinema film projectors do
>> not use three bladed shutters, two bladed ones are much more common.
>> As an alternative some machines, e.g. Kinoton use a single blade
>> running at twice frame rate. Three bladed shutters are available for
>> some machines, but are little used; their main application being in
>> venues which show silent films at lower frame rates.
>>
>> Three bladed shutters were more common in 16mm projectors, and some
>> machines had shutters which could be converted to either two or three
>> blades, either manually, or automatically, depending on the projector
>> speed, Bolex and Graflex for example.
>>
>Thank you for your contribution.
>
Moving toward digital rendition as well. ZERO shutters!
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