Yep, some differences in application here.
HS, I did use the little Holga close up lenses you can pick up in a set. There are two sets you can buy. One is the macro lenses that are two in the set, the 30 and 60mm. The close up lens set has the 120, 250 and 500mm lenses in it. I mainly use the 60 and the 120 lenses. The shots here were taken with the 120.
The Diana lens, when removed from the body, acts the same way as the Holga macro 60mm does.
I had not thought to use a regular Holga lens but that makes perfect sense and I love Becky's results. Im going to have to try that.