Polarising Filter for Lee 100mm System

[Update: if you’re wondering about the initial choice of filter system, I wrote something about this in a much earlier post.] A rather technical post today, about a problem that is likely to be of interest to others, in particular to those interested in landscape photography. Specifically, this is about the use of a polarising filter with the Lee 100mm system of square and rectangular … Continue reading Polarising Filter for Lee 100mm System