i Just set up my Durst l1200 and confused on the Placement of the 151/152 condenser Lens setup for 4/5 or 6/7. I had read with the condenser set-up you need a 135 lens for both these two negative sizes. On my Beseler 45 mx I use a 105 for 6/7 80 for 6/6 and so on. I also have a condenser lens 80, I'm assuming that's for 6x6 format. But nowhere can I find placement of of the 151/152 which is bottom or top? Help... Hopefully this thread makes sense. Any advice. Thanks David