possible stupid question

OK, I am not sure if this is another stupid question or not:



So I can cut 3mm MDF and 3mm ply with both my 1.5" and 2" lenses - the results look very simillar so which one would be the best to use or, because the results are simillar, does it really matter?



What thicknesses would I deffinately use the 2" lens on - 5mm and upwards?



Thanks for bearing with me.

(109)

possible stupid question