Digital BW, The Print

Hello all,

It is interesting to try all these methods to convert color scans 
into b&w (split channel, etc) However, there doesn't seem to be 
an effort to tie in the information that is available in the 
histograms.  Does anyone look at individual channels and say, " 
well that hump in the 200zone of the blue  channel is the sky" ?  
Or that  hump in the 100zone of the green channel is the lawn" ? 
and that  50 zone hump of the red channel is the trunk of the 
trees", and so on...?"

I ask these questions because converting to b&w doesn't seem 
to have any logical approach.  I find myself moving the sliders 
around without really understanding how I arrived at the image 
that I finally choose. 

Does anyone have a method for this "madness"?

                                  Lincoln