I found out from Randy over at Holgamods.com that you can stack Holga lenses on top of each other to get a Macro type effect. So I tried it out today using my new Holga Lens mount from my 300D. It is a very cool effect and takes a lot of light and a tripod. These were all shot in the middle of the day using 2 or 3 lenses, and a lot of them are still a bit dark. You also get VERY shallow DOF.