Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a screw mount leica or other screw mount rangefinder
While I realize there are very few people shooting a Leica, particularly a very old Leica such as a screw mount series, this is a fun project to repurpose a (censored) camera with a decent lens to a camera that I think is one of the best ever made.

Step 1: Prep

Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
So you're not only going to need a Leica but also a Lomo Fisheye camera. You're going to need to remove the lens from the camera by taking it apart.

Step 2: Sanding

Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
You're going to need to sand down the back of the lens. Use a piece of tape to cover up the aperture so that dust and shavings don't fall inside.
You will need to test the focus of the lens to make sure it's sharp. my way of doing this was to take another M39 camera I had (an old FED 3b) and locking up the shutter and holding a piece of sanded glass to the back continuously test focus after sanding. Don't over sand!

Step 3: The Mount

Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
now you will need a Mount for the lens, plastic M39 body caps and be bought on ebay quite cheap. Buy one and drill a hole in the center , remember the mount it going to bring the lens further away from the camera so maybe this should have actually been step 2, yeah, do this as step 2 than do the lens sanding. Cool, now we're organized.

If you have an M mount camera you can use an m39-m adapter to use it on post screw mount leicas. (or on a Bessa or Ikon)

Step 4: Attach the mount

Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Cool, you're almost there! now you just need to get your sh*t together, literally you're going to need to attach your mount to the lens. Your lens focuses correctly right?! My way of attaching the two pieces was to use caulk. Why? Because everyone loves caulk! Also is light tight when its thick you're going to need to cover the outside and the inside of the lens. again cover the aperture with tape!

Step 5: You're still here?! guess what? You're done!

Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
Fisheye lens for a rangefinder or mirrorless camera
There you have it! all done!

PS.
if you also have a Diana F+ with the fisheye viewfinder or if you used the Lomo Fisheye No.2 than you can use the fisheye viewfinder

(images in the examples have been lens corrected)
 
 

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