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Portra 100T - contast ?



 
 
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  #1  
Old October 23rd 03, 03:48 AM
fgphotog
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Default Portra 100T - contast ?

I have searched the web and come up with all kinds of data/specs on the
product but no info specificically on whether 100T is a LOW contrast film
or not ? Or perhaps what it is most comparable or similar to. Is it for
example similar to Portra 160NC ?

thanks
frank






  #2  
Old October 24th 03, 12:50 PM
John
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Default Portra 100T - contast ?

sometimes you just have to shoot a roll of each and make your own judgement.
I think this is one of those times.
JJ
"fgphotog" wrote in message
.. .
I have searched the web and come up with all kinds of data/specs on the
product but no info specificically on whether 100T is a LOW contrast film
or not ? Or perhaps what it is most comparable or similar to. Is it for
example similar to Portra 160NC ?

thanks
frank








  #3  
Old October 24th 03, 06:25 PM
fgphotog
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Default Portra 100T - contast ?

i think you're right. thanks for replying to the post anyway
Frank

/



"John" wrote in message
...
sometimes you just have to shoot a roll of each and make your own

judgement.
I think this is one of those times.
JJ
"fgphotog" wrote in message
.. .
I have searched the web and come up with all kinds of data/specs on the
product but no info specificically on whether 100T is a LOW contrast

film
or not ? Or perhaps what it is most comparable or similar to. Is it for
example similar to Portra 160NC ?

thanks
frank










  #4  
Old October 25th 03, 02:09 AM
Michael A. Covington
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Default Portra 100T - contast ?

Look at the slope of the characteristic curve. Steeper slope = higher
contrast.


  #5  
Old October 25th 03, 02:33 AM
fgphotog
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Default Portra 100T - contast ?

Thanks, but that only makes sense if you are 1/2 way familiar with film
curves. Or have a curve to compare it to perhaps - here's the link to it's
curve - what do you think it "means"
http://www.kodak.com/global/en/profe...2468/f009_0154
ac.gif





"Michael A. Covington" wrote
in message ...
Look at the slope of the characteristic curve. Steeper slope = higher
contrast.




  #6  
Old October 25th 03, 04:30 AM
Michael A. Covington
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Default Portra 100T - contast ?

That's exactly the idea -- compare the curves of two films. The one that
slopes more steeply has higher contrast.

How to read these curves is no mystery. Kodak has a number of data books
that tell you. They mainly explain black-and-white film curves; from there
it's pretty obvious how color film curves work.



 




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