convert a film negative to a positive file

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hello all,

i photographing 2 1/4 negatives canon 50d , macro lens. in photoshop cs3 looking filter convert negative film file positive file can work on adobe , print in on canon printer.. have tried sample orange base color , take out , invert , increased contrast curve. can not right... there way adobe or there plug in this. or there program on line this?

thank you.
robert gladden.

here's curves based procedure inverting color negatives works
reasonably well:

http://curvemeister.com/tutorials/what_ails_you/index.htm (scroll down
the topic "to copy , invert color negatives using digicam")


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