Re: New Subject : Kinetta optical freeze framing effeciency.

From: Jeff Kreines (email suppressed)
Date: Mon Feb 18 2008 - 04:56:10 PST


It's complicated to answer all of your questions, but the simple part
is this: We aren't capturing to any video format, so most of the
speed problems inherent in video capture do not apply. We capture
one digital frame for each film frame. The speed the film was shot
at doesn't matter at all. Remember, many people use these scans to
go back out to film directly, on a frame-for-frame basis. For those
working at standard frame rates, it's simple enough to use these
captures directly in a 24 fps (or 23.976 or 25 fps) timeline for
editing -- all that is affected is the playback speed. For other
speeds, it's simple to alter the playback speed of the material,
either by repeating frames, as one does in an optical printer to
convert 16 or18 fps to 24 fps, or 15 fps to 30 fps. Or one can do
other things that are more intrusive in terms of the original image
-- speed changes involving alteration of the image (not a favorite of

It also is possible, these days, to capture silent films on a frame-
for-frame basis and play them back directly at that speed, if the
projector being used is capable of accepting a wide range of refresh

There is no resolution trade-off with our system of continuous
scanning -- we can capture at resolutions up to 5K, speed limited
only by the sensor being used.

Hope that helps.

Jeff Kreines

On Feb 11, 2008, at 11:32 PM, Steven Lyle wrote:

> I was reading the brochure on the Kinetta scanning machine and was
> intrigued
> by the optical frame freeze method using triggered lamps and a CCD
> camera.
> Does this mean you don't need to worry about the original camera
> speed even
> with this method? I was under the impression that each frame to be
> scanned
> must be stationary in the gate and so when animated any film speed
> could be used in play-back including having an original unorthodox
> camera speed or in other words an "archival speed." (20 fps used to
> be popular for silent footage.)
> In short, how effective is the triggered lamp method in freezing
> each frame
> as the film whizzes past the sensor? And is the resolution just as
> good
> as a resting frame scan? Of course a continuous scan mode allows
> for faster film scanning.
> But is there a resolution and film speed trade-off?
> I do know that the Shadow Telecine is continuous but there is an
> attachment
> that digital compares each sprocket of each frame and digitally
> corrects the
> registration in post. Big dollars for that though.
> Best regards Steven "trying to figure out what TRUE frame by frame
> scanning is" Lyle.
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> __________________________________________________________________
> For info on FrameWorks, contact Pip Chodorov at <email suppressed>.

For info on FrameWorks, contact Pip Chodorov at <email suppressed>.