Sigma 18mm widerama brought back to life

[belgiumreporter]

I bought this sigma 18mm widerama in FD mount with a stuck diafragm and some haze on the elements. Normally I wouldn't bother but the 17mm canon FD is beyond repair and extreme wide angle lenses in FD mount aren't (cheap) easy to find. Lucky for me the sigma wasn't hard to take apart and no unpleasant surprises were inside. Some lighter fuel took care of the stuck aperture and the haze and the sigma is now performing to its best abilities.
Here's the 17 and the 18 mounted on the F1's