I'm going to start my venture into the film world soon (within the next couple of months) and was looking into getting a Holga or Diana as my first film camera. These cameras are the reason I wanted to get into film photography. I have tried and tried to get the same effects that these cameras produce in Photoshop and I just can't get the right look. So, back to my questions. Are there any major differences between a Holga or a Diana picture-wise? Do they produce similar images? And do either of these cameras have interchangeable lenses? I've read that the only differences between the two cameras is that the Diana is more of a collector's item, but I haven't been able to find enough information to reinforce that idea. Any information about these cameras is greatly appreciated.