[Konvas] Low cost scans || previously: 2 perf labs .....

[Sean McVeigh]

I was thinking about this stuff a couple of years back.  It basically 
comes down to:
1. build a decent movement and a good backlight (or use an existing 
camera movement)
2. point a camera at the gate
3. wire it all up to a controller and let it go

The scanner idea isn't the greatest... the mechanicals would wear out 
relatively quickly on a consumer model.  It's also pretty slow.  The 
fact that you can get 2 frames per scan is kind of a mixed blessing, 
since it would double your throughput, but I imagine you'd run into 
inconsistencies in the backlighting which would lead to a bit of a 
flicker -- you could calibrate this out of course.

The SLR idea was a bit more interesting.  A 3k x 2k bayer snapshot of a 
frame could be downsampled to a nice 4:4:4 2K image.  The drawbacks with 
the SLR are that the colour depth may not be as good as a scanner, and 
if you don't have a mirror that can be latched up (mechanically), you're 
going to wear that part out pretty quickly.  I was advised once to look 
into using something like an enlarger lens for such a project, since 
they are specifically designed to project a planar image onto a planar 
surface.

Anyhow... my 2 cents.  Would definitely love to see someone actually 
give it a go :)

Cheers,
Sean





olivier satnet wrote:
> HI Pawel .... this is my next project !!!
> Dont use a scan ...
> use a 12MP nikon or canon Digital SLR mount all in a solid rock deck station
> with a good macro lens ....
> i see this in internet some time ago about Ho9me scanning using digital
> cameras .....
> Using a old mechanism of a "trucca" system ....
>
> Oivier .
>
>
> ----- Original Message ----- 
> From: "PaweÅ, SaÅ,adziak" <pawel-saladziak at o2.pl>
> To: "Konvas Discussion List" <cinema at konvas.org>
> Sent: Monday, August 25, 2008 1:40 PM
> Subject: [Konvas] Low cost scans || previously: 2 perf labs .....
>
>
>   
>> I sounds quite good for short projects. Even for a 16mm branch there
>> is a soultion. It is called a tiffcine. A small program that cuts a
>> strip scan into individual frames using a perforation pattern
>> recognition. And this makes possible to use flatbed scanners. More
>> info on google, like always.
>>
>> I am preparing now a project of utilising a Plustek Opticfilm 7200
>> scanner and some software and stepping motor and one of my
>> Kinor16CX-2m fim transport mechanism to make a low speed true
>> scanning machine with pin registered scans. Since plustek allows to
>> get 7200 dpi and gives you door to door service ALL ( ha ha and only)
>> I need to do is to design and built an adapter for film movement that
>> will fit the scanner and will not destroy it.
>>
>> so... there is another world :)
>>
>> best regards
>> Pawel from Poland
>>
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