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  Photography Forum: Darkroom Techniques Forum: 
  Q. colour negatives on B&W paper
Ahmad Hasan
Asked by Ahmad Hasan    (K=4164) on 4/1/2006 
Did any body try to print colour negatives on black and white paper ( may be its a strange question) but any way if you tried it is it comparable by any means to normal B&W prints and how to diffrentiate them


    


Matej Maceas
 Matej Maceas  Donor  (K=24381) - Comment Date 4/1/2006
Yes I tried it, see http://www.usefilm.com/image/451868.html and I'm adding another example as an attachment. I think the result is reasonably comparable to a print from B&W film - there's nothing about the print that would immediately strike me as somehow wrong.



bw print enlarged from colour negative



Matej Maceas
 Matej Maceas  Donor  (K=24381) - Comment Date 4/2/2006
You can also print slides, see Roland Lacson's portfolio http://www.usefilm.com/photographer.asp?ID=82059&PF=18709




Ahmad Hasan
 Ahmad Hasan   (K=4164) - Comment Date 4/3/2006
Thanks alot for your explanation I see you ve done a lot of interesting B&W prints from colour negatives so no special handling to get the exact contrast and grades .




Clay Turtle
 Clay Turtle   (K=-42) - Comment Date 5/10/2006
Printing colour naegatives as B&W's is a fairly common, generally using varible contrast rc paper & filters. Generally it is (was so common that Ilford, Kodak, etc produced filter packs for enlargers.
You are absolutely right, the reproduce as b&w well, also scanning as b&w function for a digital file can be reproduced with inkjets using shades of grey instead of colour. You can have a b&w printed on color paper but they tend to be cyan rather than black (or some shade of grey).
The distinction between b&w negatives and colour is an intricate point that many fail to grasp. B&W has a greater latitude => 8 stops of light while colour negative has only 4 stops of light between pure black and pure white [pure => point at which detail (texture) is
losed]. The b&w range is greater than the colour spectrum of colour film which is the major difference between these two film types, slide or positive film has a rather limited range of 1 stop of light.
Aything above (greater ev) becomes clear, anything with a value of less than goes to pure black [lacks detail].




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