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Wedding Photography Insight with Jeff Ascough

Read an updated interview with Jeff Ascough via the photo.net community on his wedding photography technique and skills. Includes wedding photography from Jeff's portfolio.

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Sony a6300-First Impressions Read More

Sony a6300-First Impressions

When Sony's invitation to spend a couple of days shooting with the new a6300 in Miami arrived via email, I didn't have to think twice before sending my RSVP. Announced in February and shipping this...

OM Lens Cleaning

Jeff Guthrie , Dec 07, 2009; 10:14 p.m.

Yesterday I came across a 35/2 Zuiko lens for sale cheap. Unfortunately, it was cheap for a reason, the rear element of the lens had a haze about it. Rather than see an otherwise good lens go to waste, is there anything that can be done to remove this haze?


Ron Pyke , Dec 08, 2009; 12:43 a.m.

Try good old fashioned cleaning methods... blow the surface clean with a rocket blower or some such, then use lens papers and cleaning fluid (gently)... the modern lens cloths work well too. Make sure your cleaning fluid is safe for coated lenses - optometrists often sell suitable cleaner if your local 'big box' electronics store doesn't have anything suitable.
This worked for one of my old OMs.
Good luck! It is a great lens.

Patrick Dempsey , Dec 08, 2009; 04:08 a.m.

Despite what you may have read, not ALL haze is fungus. There have been many instances when what I thought was fungus just washed off the first time I tried with lens cleaner and a lint-free-rag.

Carey Moulton , Dec 08, 2009; 10:03 a.m.

The haze is found on the inside surfaces of the lenses as well. I have cleaned my 50mm f1.8, I think the rear assembly came apart fairly easily by removing the screws in the back. Not sure if the 35f2 is mechanically the same.

Matthew Newton , Dec 08, 2009; 10:57 a.m.

A jewler's screw driver set is going to be required. From taking apart a 135/3.5 a bit and a 50/1.8, if the 35/2 is anything similar the rear element should come out pretty easily. Just remove the bayonet mount at the rear and then your likely to be able to get the retaining ring off the rear element. I believe it required a spanner though...maybe. That's as far as I can remember though. At any rate I didn't have one and was able to get it partially lose, but I couldn't get it free. This was an attempt to clean both lenses of significant, significant fungus. Since they were so cheap I gave up instead of spending the money on a decent jewler set and a spanner.

Jeff Guthrie , Dec 10, 2009; 12:08 a.m.

Thanks for the advice so far. Unfortunately, cleaning fluids I used seemed to have no effect on the haze. It appears that the coating itself on the outside of the glass is hazed, there are no issue with fungus. It looks as though someone tried using a harsh chemical to clean the rear element, which in turn caused the coating to turn somewhat milky in appearance.

Patrick Dempsey , Dec 11, 2009; 08:32 a.m.

Fungus can permanently etch coated surfaces on a lens. If there is any kind of pattern or dots in the haze then it's remnants of fungus. At the cost of optical quality it might be possible to remove the coating, but this one might be better served as a parts lens for a repair man.

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