8mm Forum: Shutter question

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Topic: Shutter question

Tom Photiou
Film God

Posts: 4837
From: Plymouth U.K
Registered: Dec 2003

posted February 24, 2018 01:39 AM

I was reading the thread on the 8mm section on shutters. While i do fully understand that a 2 blade is used by many to put extra light upon the screen, i was recently reading the update and mod leaflets for from eiki and i see that a 5 blade shutter was availible.
Could someone enlighten me as to why a 5 blade would be used please.

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted February 24, 2018 02:02 AM

My guess Tom would be for telecine or perhaps the 5-blade shutter was used for TV since it would be more compatible with TV's 60fps.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted February 24, 2018 02:15 AM

Tom
Have a look at this:-
http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=5;t=001131#000000

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Maurice

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Tom Photiou
Film God

Posts: 4837
From: Plymouth U.K
Registered: Dec 2003

posted February 24, 2018 05:23 AM

Thanks Maurice, (& Janice) [Wink]

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Nantawat Kittiwarakul
Master Film Handler

Posts: 280
From: Rajburana, Bangkok, Thailand
Registered: Aug 2017

posted February 25, 2018 09:09 PM

(A bit late in the game,as usual [Wink]

)

The 5-blade shutter is absolutely necessary for real-time telecine in the day when 60i is the only video format available. But in this day and age when camera with 24p framerate is pretty common. Do we still really need this modification? [Confused]

(Done the telecine with unmodified projector. No flickering/banding at all.)

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Just a lone collector from a faraway land...

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Tom Photiou
Film God

Posts: 4837
From: Plymouth U.K
Registered: Dec 2003

posted February 26, 2018 06:31 AM

Thank you Nantawat [Wink]

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