The premise for making this lens is simple: I want a Holga lens for my Epson D-R1 digital rangefinder. Why hack-off a rangefinder lens and mount it on another rangefinder??? Well, for its trippy optical quality, and to contribute something useful to the very small digital rangefinder community. "Wait, hold-up! So it's only a few clicks away in Photoshop"! Good question, but even with Photoshop there is a slight problem- I don't know Photoshop... There I said it, now I am embarrased. The proper way to do this is shoot with film, scan, and import to PC, or have the lab scan it on to a CD-ROM for you. However, buying, developing, scanning films can get expansive, especially when you're experimenting with a homemade lens. Excuses, excuses... Hey, let's not become bankrupt around tax season over a $32 (tools not included) lens.
Before we start, EOS-Holga mod posted on Litratista.org
EOS-Holga mod posted on Litratista.org, and aTanguay's Nikon-Holga mod posted on flickr
aTanguay's Nikon-Holga mod posted on flickr are two must-reads. I started thinking "Hmm... what if" after reading their posts and came up the idea for my little project! However, they mounted their Holga on DSLR bodies which you can see the focus. On uncoupled rangefinders, you'll have to eyeball the focusing distance and set correct foucsing (or little 'flower' icon for near, 'person' for mid, and 'mountain' for far). All of this will be academic if I can build a lens that will have the correct focal length (60mm) to be in focus at infinite.
Drawing diagrams and reading math textbooks won't help, so I'm just going to build one and see how it goes. After pounding two cans of Red Bull, I am saying "Let's do this"!!!