From: mikem@ex.heurikon.com (Mike Mayer)
Newsgroups: rec.photo
Subject: Re: Large format color negative questions
Date: 30 Jul 92 15:49:51 GMT
Reply-To: mikem@ex.heurikon.com (Mike Mayer)
Distribution: usa
Organization: Heurikon Corporation, Madison, WI

In article <0beZ032c4aEN00@amdahl.uts.amdahl.com> bjs@amdahl.uts.amdahl.com (Barry Sherman) writes:
#  Do *you* use VHS?  VHC?  Something else?  Because of my background
#  doing Cibachromes I'm more than a little leary of any color film that 
#  promises *more* contrast.  I really hate it when the shadows drop off the
#  scale and turn into black holes.

I've looked at those two films but never tried them because it seems like
the daylight balanced film is meant for flash (short exposures) and
I've never looked at the filter factors for the required fiter for the
tungsten film.

I guess you could use the tungsten film with no filter and correct it during
printing, but I haven't heard of anyone trying it.
#
#* I notice that what little literature I can find recommends what I 
#  consider to be rather abbreviated exposures as the longest that are 
#  recommended for use with these films.  Somewhere in the 1/10 second range or 
#  so, if my memory is functioning reasonably well.  This worries me since I 
#  rarely get to use an exposure that short with my view camera.  Times of 1/4" 
#  or longer seem to be more the norm. Has anyone had any experience with the 
#  reciprocity characteristics of these materials?  Color shifts as well as 
#  exposure non-linearity?

I think I've seen prints by someone who used the daylight version.
Since the reciprocity characteristics of the color layers are not the
same, not all of the color changes could be corrected when the prints
were made.  I seem to remember that they looked a bit odd, but that's
what the guy wanted.

#* So when are they going to make 4x5 Ektar 100? (Not to echo donl. :-)  Based 
#  on my 35mm experiences, I think that Ektar 25 is a little short on exposure 
#  scale for my tastes for general use and the speed seems a little low for 
#  general view camera use.  But the 100 seems like it would be a real winner.

I assume that most 4x5 color work is for publication of some sort, meaning
transparencies.  I wonder how big the market for 4x5 Ektar would be?  It
seems like there are plenty of people in rec.photo who would use it.  Is
Kodak ignoring it or have they decided that there is no market?
Newsgroups: rec.p[hoto
Subject: Re: Large format color negative questions
Summary: 
Expires: 
Reply-To: mikem@ex.heurikon.com (Mike Mayer)
Followup-To: 
Distribution: usa
Organization: Heurikon Corporation, Madison, WI
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In article <0beZ032c4aEN00@amdahl.uts.amdahl.com> bjs@amdahl.uts.amdahl.com (Barry Sherman) writes:
#  Do *you* use VHS?  VHC?  Something else?  Because of my background
#  doing Cibachromes I'm more than a little leary of any color film that 
#  promises *more* contrast.  I really hate it when the shadows drop off the
#  scale and turn into black holes.

I've looked at those two films but never tried them because it seems like
the daylight balanced film is meant for flash (short exposures) and
I've never looked at the filter factors for the required fiter for the
tungsten film.

I guess you could use the tungsten film with no filter and correct it during
printing, but I haven't heard of anyone trying it.
#
#* I notice that what little literature I can find recommends what I 
#  consider to be rather abbreviated exposures as the longest that are 
#  recommended for use with these films.  Somewhere in the 1/10 second range or 
#  so, if my memory is functioning reasonably well.  This worries me since I 
#  rarely get to use an exposure that short with my view camera.  Times of 1/4" 
#  or longer seem to be more the norm. Has anyone had any experience with the 
#  reciprocity characteristics of these materials?  Color shifts as well as 
#  exposure non-linearity?

I think I've seen prints by someone who used the daylight version.
Since the reciprocity characteristics of the color layers are not the
same, not all of the color changes could be corrected when the prints
were made.  I seem to remember that they looked a bit odd, but that's
what the guy wanted.

#* So when are they going to make 4x5 Ektar 100? (Not to echo donl. :-)  Based 
#  on my 35mm experiences, I think that Ektar 25 is a little short on exposure 
#  scale for my tastes for general use and the speed seems a little low for 
#  general view camera use.  But the 100 seems like it would be a real winner.

I assume that most 4x5 color work is for publication of some sort, meaning
transparencies.  I wonder how big the market for 4x5 Ektar would be?  It
seems like there are plenty of people in rec.photo who would use it.  Is
Kodak ignoring it or have they decided that there is no market?
--
Mike Mayer                                             mikem@heurikon.com
Newsgroups: rec.photo