I have just acquired an 8 1/2 inch Kodak Ektar lens in an Acme #4 shutter. There are a few large specks of dust internally on the inner lens surfaces but I have not been able to unscrew the front or back lens cells to get in there to blow the dust out.. Is there some trick to unscrewing them or am I not applying enough force to unscrew them? Any advice would be greatly appreciated.
Simon Benton
Both the front and rear elements should simply unscrew from the shutter in the usual counter-clockwise direction. A sheet of rubber or leather may help to improve your grip on the rim of the lens elements. Alternatively, a strap wrench, similar to those used in plumbing applications, can be made with rubber or leather to get a bit of extra leverage.
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