I am an image maker. I don't understand focal length. I don't know how the light meter works. I found digital cameras then I found Lomo and I wanted to put the two together. Then I found Lensbabies and I found Randy who has become my best friend and who made me a TaHolga Lens. I saved up money and got my Canon 5D to match up perfectly with my TaHolga. Now I am trying the Lensbaby 3G....and so it goes...