|
Author
|
Topic: Elmo ST1200HD modification
|
|
|
John Whittle
Jedi Master Film Handler
Posts: 791
From: Northridge, CA USA
Registered: Jun 2003
|
posted October 12, 2008 09:20 AM
There are a large number of options when you go into telecine. It all depends on the quality you want and what the starting materials are. If all you material is silent, then for speed conversion alone, you'd want a three blade shutter and a constant 20 fps.
There would be a number of ways to accomplish this and to the degree you wanted speed accuracy, it would dictate what you did.
But there are other options/problems. What means do you intend to use to pick up the image? Are you going to use a screen and point the camera at a screen or are you going to devise an optical bench and use an aerial image and diffuser?
Will the projector have other uses?
It so, then you don't want to do major modifications to it, just things you can put in and take out.
Ideally, you should have a motor that you can control electronically for speed. If you have sound film and work in the traditional way, you'll need a five blade shutter.
Then you ask about 16x9 frames. You have a major obstacle in the perforation for the Super8 frame if you widen the gate. In 16mm using single perforated film, the gate is widened into the sound track area giving you more picture area.
Another consideration is a dedicated device such as Elmo made or one that Clive Tobin of Tobin Cinema Systems currently sells.
Another consideration is one of the new hi-def camcorders that operates at 24p (this would be for sound speed film) in which case you could remove the shutter and synchronize the projector to the camera to remove the pull down and let the system do the conversion work.
Having built three different telecine systems (all aerial image), I must tell you that there is a lot of work and the final product won't be up to what you get from a Rank Flying spot scanner.
Any system that uses a mutiple interruption shutter is likely to introduce fields in the finished product that are blurred. These aren't normally visible in viewing, but are a problem when you're editing the material on a computer.
There are other sources of telecine equipment, including one company that makes a product that captures super8 frame by frame. It's slow, but every frame is sharp and you do any speed conversion in software after capture.
John
| IP: Logged
|
|
|
|
Wade Rupp
Junior
Posts: 3
From: Los Angeles, USA
Registered: Aug 2008
|
posted October 12, 2008 06:39 PM
Tom:
Well then, I might be able to buy another projector for what it cost to get new belts! ![[Eek!]](eek.gif)
John:
My immediate concern is to get test footage into my editing computer. I've been shooting tests every few weeks and was hoping to to be able to telecine off the wall with the projector I already have. With this particular model, however, it seems it can't be done very well, unless someone can tell me otherwise. I was told the Elmo ST180, or the ST600 are easier to convert. Right now I have to save up my footage until I have close to a half hour of film to get my money's worth of telecine time at the lab. I don't like the delay. I know the Workprinter can do frame by frame telecine, but the JK Printer uses a still camera to capture thus avoiding those half frame issues, although my hard drives would get filled up alot faster with the 2K frames, and by bank account would take a huge hit. If I was doing wedding films, or something maybe I could justify it. Yes, at some point I expect to be synching location sound. Why isn't life simple!
--------------------
Wade Rupp
| IP: Logged
|
|
|
UBBFriend: Email this page to someone!
Printer-friendly view of this topic
