Canon FL 1200mm to EF - Infinity Focus Mod?

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Chris Rasmussen
Chris Rasmussen New Member • Posts: 2
Canon FL 1200mm to EF - Infinity Focus Mod?

Greetings all! ~ I've successfully modified FD 400mm and 800mm lenses using EDMIKA EF adapters and am attempting the same with an FL 1200mm.

The problem I've encountered is, while super tele lenses all have some leeway beyond infinity focus, that additional focus on the FL 1200 comes up short - .75mm (point seven-five millimeters) to be precise.

Has anyone here done a successful modification on this lens?  The cheap adapters from Vello, Gobe and others diminish lens quality so I'm pursuing a glassless route to achieve infinity.

I *could* remove the focusing cylinder from the focus-unit body and have a machine shop shave off one or two millimeters (for added leeway) from the front.  The worm gear doesn't look to have a stop (as the 800mm does,) so it should work.  Hoping one of you fine photographers has found an easier route.   Thanks in advance for your input!

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