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Topic: Chinon 9500mv projector
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Martin Jones
Phenomenal Film Handler
Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008
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posted March 12, 2014 06:44 AM
Vin,
Categorical answer... there REALLY isn't.
The problem arises from the inherent difference between Cinema (film) technology and TV (Video) technology. At 18 fps the 3 blade shutter of a projector puts pictures on the screen 3 X 18 = 48 times a second. TV (Video) puts pictures on the screen 60 (Close approx)times a second. The difference produces the "Flicker" (12 times a second) which manifests itself in a number of way, including "rolling bars" on the screen.
Since you cannot change the "picture rate" of the Video camera you HAVE to change that of the projector to eliminate the effect,
so you use 20 fps (20 X 3 =60).
This is not too important with silent film, the action will be slightly increased in speed. But with sound film, the sound pitch will increase by 11%, an obvious change.
The only reasonably easy way of solving this problem is by either putting the Video recording into a computer (or by making the recording on the computer in the first place, known as capturing) and then using a Computer Program to both slow down the action and sound, thus restoring the original action speed and sound pitch.
Does this work in practice? Categorically, YES!
Having said that, changing the speed to eliminate the flicker is NOT difficult unless you want everything dished up on a plate. The Eumig sound projectors with model numbers in the 900 range will do this with a manual speed control on the front panel.You simply adjust it until the pictures on the Camera monitor screen have no "flicker". There are hundreds, maybe thousands, of us out here who have been doing it for years.
There ARE commercially produced machines that do all that for you, often modified from standard projectors, but unless you have a very great deal of film to transfer the cost of purchasing one is probably prohibitive.
One can't help but ask... are there no commercial DVDs of the commercial films you are trying to transfer?
Martin
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Retired TV Service Engineer
Ongoing interest in Telecine....
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Martin Jones
Phenomenal Film Handler
Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008
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posted March 13, 2014 04:22 AM
For preference, Models S932,933 & 934 which have separate feed and take up spool arms and top sprockets for better film transport.
S938 & 940 are similar but have elaborate sound facilities, which make them very expensive,and are not justified .for your purpose
Models S903 thru 912 (with or without a GL suffix), are also excellent machines IF THEY ARE IN GOOD CONDITION. Some have issues with film transport or their very awkward coaxial reel arrangement.
Usual words of caution... make sure it works properly before you buy. And... you don't need a silent machine if you have a sound one, so don't buy both!
Anyone else offer advice re these machines, based on specific model experience, please?.
http://www.super8data.com/ click on the "projector" picture, then ""eumig, then "model number" for machine details
--------------------
Retired TV Service Engineer
Ongoing interest in Telecine....
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