fungus amongst us

[jerry_smithson1]

I recently purchased a 90mm F8 Schneider Super Anulon lens with a

Compur 0 shutter, it has a Linhof logo engraved on the shutter,and it

has a fungus inside the front lens.

 

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Why the Linhof logo on the shutter?

 

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Is there anyway to remove the fungus and does it affect the resolution

of the len

[n_dhananjay3]

I would imagine it would affect resolution. If it was bad enough, it

would probably be quite clearly noticeable. I've heard that they

eventually can spread over the whole lens and actually affect the

glass itself. I'm not positive about this but I thought exposure to UV

was supposed to kill the fungus - so you could leave the lens exposed

to the sun, can't do any harm. I wonder if there are chemical means to

achieve the same without having to disassemble the lens and separate

the elements to clean it. You could check with Steve Grimes. DJ

[ron_lawrence1]

Send your lens to a shop you trust now before the fungus starts

etching into the coating. I once had a 90 f5.6 Super Angulon that had

fungus and I sent it to Schneider USA and they were able to clean the

lens so it looked like new. Peace of mind now and resale in later

years will make it worth the $50-$75 it will cost to clean.

[jimi_axelsson3]

For some general info on this subject look at:

http://www.chem.helsinki.fi/~toomas/photo/fungus/

[neil_poulsen1]

I've always heard that Linhof cherry-picked lenses from a larger

collection. They would add their logo to those lenses selected. I

have two Schneider lenses that have the logo incribed on the outside

edge of the rim.

[pete_andrews]

Total agreement with the above. Get that fungus sorted out

<i>soonest</i>, if it's not too late already. Not only will it eat

through the coating and affect the contrast, but if left long enough

it'll actually etch the glass as well, ruining the lens completely.

A good exposure to UV or strong sunlight will arrest the fungus, but

it needs to be properly removed. If the lens is kept in a leather bag

or case, throw that bag/case away, it'll harbour the fungus, and

probably caused it in the first place.

 

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Linhof supplied (still supply?) Schneider lenses under their own name

(at a premium) for their Kardan and Technika cameras.

[joris_van_herk]

fungus can be wiped off by using a mixture of ammonium and hydrogen- peroxide. I cleaned a 1.2/50 pentax which was in a very bad funus condition, works well now. Somehow with this lens the fungus did not much damage. But my 9/800 Apo-Ronar CL had just a tiny bit of fungus resuling in a deep etching flaw. Awfull these morons who keep their expensive camerastuff in a damp sellar.

[bob_salomon]

"Linhof supplied (still supply?) Schneider lenses under their own name (at a premium) for

their Kardan and Technika cameras."

 

Linhof supplies Linhof tested lenses from Rodenstock and Schneider either in mounts

specifically for Linhof roll cameras like the Technorama 612 and 617 cameras or in regular

shutters for use on any view camera. Lenses that Linhof has inspected and passed have the

Linhof name stamped on the rim of the front or rear mount depending on the size of the

lens. Small diameter lenses have the Linhof name on the rear rim as it wouldn't fit with all

that is stamped by the manufacturer on the front rim.

 

Linhof hasn't put their name on a view camera shutter in several decades so if you just got

one it is probably overdue for a complete CLA.