Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Gary Brown" 
<baffin@c...> wrote:
> Richard:
> 
> You might want try a 29 red filter. I use that filter on a 20D 
modified for 
> IR.

Gary,  Could you please explain?  What filter is used in the IR 
modification of your D20?

Colin