B&W Conversion with CHANNEL MIXER

The

Photo Experience

 

Technical

B&W

       

Tech. Intro

   

   

 

 

 

 

 

 

  

    

There are numerous methods for digitally converting color images to black and white. I originally used the desaturation tool in Photoshop but ultimately discovered that this method leaves out a lot of information, especially in the middle tones. Even a plug-in filter was no match for the channel mixer method.     

  

         Photoshop C2: 

         IMAGE ... ADJUST ... CHANNEL MIXER, check MONOCHROME box

   

One of the settings below should be used based on which traditional film affect you are trying to achieve:

  

Basic Settings

Normal Contrast: 43,33,30
High Contrast: 40,34,60

 

Agfa
Agfa 200X: 18,41,41
Agfapan 25: 25,39,36
Agfapan 100: 21,40,39
Agfapan 400: 20,41,39 
    

Ilford
Ilford Delta 100: 21,42,37
Ilford Delta 400: 22,42,36
Ilford Delta 400 Pro: 31,36,33

Ilford FP4: 28,41,31
Ilford HP5: 23,37,40
Ilford Pan F: 33,36,31
Ilford SFX: 36,31,33
Ilford XP2 Super: 21,42,37

  

Kodak

Kodak Tmax 100: 24,37,39
Kodak Tmax 400: 27,36,37
Kodak Tri-X: 25,35,40  

 

 

 

   

 

    

   

   
 

 

    Check out the detail and grey scale

on the inside of the leaf. 

 

 -  Channel Mixer best detail.

 -  PS desaturated is terrible.

 -  NIK B&W is OK but light.

 

 

 

 

 

 

 

 

   Channel Mixer    21 / 42 / 37
Photo Shop    IMAGE ... DESATURATE Filter ...  NIK Color Effects ... BW ... ok