Fitting the Lens

Obviously the diameter of the new lens is larger than the original one. To fit, you need to enlarge this circle.

The retaining ring can be used as a guide to show you the area to be removed. File, grind, drill, whatever you gotta do. Once really close to fitting, constantly fit and refit until it just slips in without force.

Once complete, you should cover the front with something. Use the original covering as a template and cut yourself something. I found some textured plastic I cut to shape.

I think this compliments the original design quite well.

Using contact cement and some good ol' fashioned pressure, it is attached for good.

If you put both halves of the lensboard together, you will notice alot of gaps, open areas, and holes. These must be covered to prevent stray light from entering the bellows in anyway.

Using some strips of metal from an empty film pack. You will most likely design your own way of doing this, but cut strips and hot glue them into place where enters.

Test fit and trim the pieces until your two halves go together like magic.

An alternative to this process would be through the use of some sort of weather stripping gasket...but this gets the job done.

Now is the time to put the lens into the board. Use the retaining ring to clamp it down as hard as you can. You don't want the simple turning of the shutter speeds to move the whole thing.

You can clearly see in this photo how I had to grind out some of the backside of the board. The thickness of the black material on the front kept the ring from catching. You may or may not need to do this.

Close up the lensboard by replacing the 3 screws that hold it together. Check for light leaks.

Obviously you need to cover the 4 square holes on top. I used another piece of the same plastic I used for the front. A little glue and its a good fit.

Take this opportunity to clean the camera inside and out. Without the bellows and lens in the way, this is alot easier now.

Replace the bellows by bending the tabs back into place.

Put the camera back together.

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