I haven’t done that much with B&W conversions. I’ve read a bunch of articles 
that proclaim not to use the simple LR conversion, but often that is what I do 
- just click the Black & White button in Develop mode. And then look at the 
HSL/Color/B&W panel to see what LR has automagically done. E.g., I just tried 
that with a shot I took of one of my for-sale lenses. I had the lens laying on 
a wood table near a window with fairly direct outside light. LR converts that 
to B&W with - adjustments to Red, Orange, Yellow, Green, and Aqua, and + 
adjustments to Blue, Purple, and Magenta. I might fiddle with those adjustments 
just a bit to see if I can increase contrast or whatever.  Last fall I did 
spend some time with a B&W conversion of a waterfall. I specifically wanted B&W 
rather than color because the bright green vegetation in the river bed was 
distracting me from the the falls and overall scene. So I did the simple 
conversion and then mostly worked with the Green  and Red sliders to try to get 
a tone balance that felt right to me.

stan

On Sep 2, 2014, at 11:13 AM, David J Brooks <[email protected]> wrote:

> I use the presets once in a while for my B&W conversions but its a
> guess ing game to me most times. For those that use them, how do you
> go about ot. If the colour photo has a lot of green do you start with
> a green filter or something else. I just tend to run up and down and
> pick one that looks nice.
> 
> Any tips.??
> 
> Dave
> 
> -- 
> Documenting Life in Rural Ontario.
> www.caughtinmotion.com
> http://brooksinthecountry.blogspot.com/
> York Region, Ontario, Canada
> 
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