[photo-3d] Re: vm template

["Charles Barnard" <charles.barnard@xxxxxxx>]

--- In photo-3d@xxxxxxxxxxx, "ron labbe" <ron@xxxx> wrote:

> The main issue I see that you have not seemed to address is that of
> pin-registration. If the film recorder is pin-registered, one
>should be assured that there will not be any deviance in alignment.
I 
>have been using slides.com, but the colorslides.com may be worth 
>trying if their film recorder is pin-registered. Do you know if it 
is?

This is a VERY good question.  I emailed George Konold, of Konold 
Kreations, regarding his Agfa recorder, and this is what he said:

"No, it's not pin-registered. The film is engaged in sprockets and it 
advances the film the same distance each time with a motor drive. The 
film recorder has a 35mm camera built into it, so it advances the
film with sprockets just like any other camera. It only handles film 
lengths of 36 exposures, so that's the maximum film length we can 
shoot at a time."

I had George run two 6 frame tests; one with the alignment grid, the 
other with actual images.  No deviation was detected. Meaning,
the film frames seemed to be in exactly the same position related to 
the sprockets on both separate runs (my primary concern). However,
running longer lengths might be the tell tale here, and should 
probably be tested.  If the film is maintaining sprocket registration 
throughout the process, isn't that tight enough?  What is your view
on this?

Another issue not addressed in my document with the archive, is film 
stock - what type is required for his setup and if we, as customers, 
can request specific film stock (ISO/ASA) etc.  He answered:

"The film recorders are color balanced for use with Kodak Professional
Ektachrome 100 ISO (ASA) film and that's it. We buy it in commercially
packaged rolls of 36 and in rolls of 100 feet.  The 100 foot rolls we 
load into a bulkloader and crank out as many exposures as we need up 
to a roll of 36.  Since sometimes we do short rolls, the numbering 
sequence on the edge of the film can get mixed up and go from the 
middle of one roll to the middle of another.  Most customers don't 
care because the numbers are inside the plastic slide mount.  The 
commercially packaged film is purchased when it's available on sale
at a discount, and the bulkloaded film is what we normally use."

For me, 100 ASA is acceptable, but may be a bit too grainy for
others. Also, though frame number order isn't important to me, or 
necessary for using the file, it may be annoying to others.

Hope this helps.

-Charles