Opening up a Canon 135/4

R

Red Robin

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Just won(?)a 135/4 with a good looking outside. The front lens seems to have a good bit of haze. Is getting in to it as easy as it looks. Remove three sm. screws and unscrew ft. part of the barrow? If that's it what is the recommended cleaning solution. I've read of different formulas, is there a coating to consider? Do I need to handle the glass w/latex gloves to protect from skin oils? Everything else looks good(no oil on blades, back glass. Only this haze up fr. A light makes it look real bad up there. Thanks for your time.
 
I've done this before- the three screws you see are to align the aperture index line. Do not unscrew them. Not required.

Grasp the front of the lens firmly, use a rubber mouse pad. The front section unscrews in front of the aperture. You will then see a retaining ring on the inside, has two spanner holes. Take out that section, you should be able to get to everything.

I do not use gloves, but handle only by the edges. The coating is hard, and stood up to a lot of ammonia based eyegladd cleaner. My Serenar 85/2 was opaque when I got it. Perfect now.
 
If the haze is behind the first element, you need to remove the group that you see. If the haze is on each side of the aperture- no need to open it further.
 
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