04-29-12 9:49 PM
Maybe I don't see a point, but You may always move little forward with 50mm or move a little back with 100mm. The framing would be almost the same, little perspective changes wouldn't have been most important here. If I were there, I would have chosen then same 50mm because Macro lens have a little different DOF. It is hard to replace 100mm with 50mm or 25mm with 85mm (where difference is more than about 3:2 focal length), but I like most view of angle here.