[filmscanners] Re: Using high res digital camera for scanning/duplicating

["" <mail@imagesbykehl.com>]

Glad to see you are still active on this list Laurie.

You raise some very good points.
Some I have considered, others I have not.

I think I would be willing to implement all of the things you mentioned:
filters, special lighting, copy stand, filmholders, etc, if the result was
high quality digital scans at the rate of  a roll every few minutes instead
of a roll per hour.  I am certainly more concerned with time than cost.  But
the software for converting the negatives may be a serious issue.

Thank you for your input.

Bob Kehl
ImagesByKehl.com



----- Original Message -----
From: "Laurie Solomon" <laurie@advancenet.net>
To: <mail@imagesbykehl.com>
Sent: Monday, February 13, 2006 10:26 PM
Subject: [filmscanners] RE: Using high res digital camera for
scanning/duplicating


Your questions tend to ignore some other key issues.  Even if the
resolutions and quality of digital cameras have improved to the point of
competing with flatbed scanners or even film scanners when it comes to
the results or even if one uses high quality flat field normal and/or
macro duplicating lenses, one has to deal with issues of maintaining the
film in a flat state without curl or bowing, flat and even color
corrected lighting of the film, and finding software that will be able
to both reverse and account for the orange masking on color negative
film without causing unwanted color casts and shifting.

Of equal importance, one would have to establish and utilize a
traditional copy stand setup to keep the camera stable and without shake
for longer exposures at the proper distances given the lighting and
light levels being used as well as allowing for the use of filters over
the lights for purposes of softening the lighting as well as polarizing
the lighting and correcting it for color temperature, depending on the
nature of the subject film being rephotographed if one  is to seriously
engage in using a digital camera to digitalize films.  One might also
find a need to utilize filters over the lens of the digital camera to
account for variances in the color characteristics of the films in
question with respect to the types of camera sensors being used.

I have not used Vuescan in a while and have not kept up with all the
updates of the software; but I have to wonder if it can be used to color
correct and account for the orange masking of color negatives when used
with camera raw files generated by the higher quality digital cameras. I
have the feeling that one would have to convert the camera raw files to
standard file formats like TIFF and JPEG before one could engage in any
post production image editing and correction using Vuescan.

----Original Message----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk] On Behalf Of
mail@imagesbykehl.com
Sent: Monday, February 13, 2006 10:49 AM
To: laurie@advancenet.net
Subject: [filmscanners] Using high res digital camera for
scanning/duplicating

> Is the technology to the point yet where we could use a high
> quality duplicating lens and a high resolution digital camera
> (Canon/Nikon  12-16mp) to digitize slides and negatives.
> What would the potential pitfalls be?
> Would Vuescan work to color correct the negatives?
>
> Forgive me is this subject has already been discussed to
> death.  I've been away from the list for a few years.
> If has already been addressed someone please direct me to the
> archives.
>
> Thanks
>
> Bob Kehl
> ImagesByKehl.com
> online for four years - thanks to this group
>
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