I will share with you how I made a Polaroid Land Camera Swinger Model 20 To Canon EF DSLR Lens.
This lens will fit on any Canon EOS camera.
So what do you get?
Polaroid Land Camera Swinger Model 20 To Canon EF DSLR Lens
Non-focusable meniscus lens, Polaroid f17 100mm.
AF-Confirm (If your adaptor allows this.)
Fixed zoom; minimum distance of 4-5 meters. (With macro bellows) Minimum distance of 20 cm.
Manual, stepless 2 bladed aperture that gives a special bokeh.
Front filter thread size of your choice.
You can use it for stills, or video.
If you make one please let me see it :-D
Also I have a flickr account, where you can see alot more homemade lenses for Canon DSLR.
Step 1: Material bill
A Polaroid Land Camera Swinger Model 20
A good brand epoxy glue
A set of Canon EF Macro Extension Rings. I just got some cheap ones. Mine has 7,14 and 28mm. written on them. Others has numbers 1,2,3 on them. Get the 7,14 and 28mm. ones if you can. I don't know if the others are the same size. You should get this with the AF-Confirm chip installed.
Some Canon EF Macro Bellows. Again I got the the cheap stuff. You should get this with the AF-Confirm chip installed.
A Phillips head Screwdriver
A Compass. This is for drawing circles, not for finding the North Pole
A Ruler and a Vernier Caliper.
A flat black piece of plastic sheet 5x5 cm. You can get this from smashing the remains of the camera body.
A flat black permanent marker. I used a Posca marker.
Note: AF-Confirm is when your normal AF lenses, confirms that you have reached focus. This is pretty handy, so get your adaptors with it.