The perils of living in the tropics

A box with a UV lamp will keep the fungus at bay, these are used by barbers and others to keep their instruments free of bateria and such.

The fungus in Sekor lenses is easily removed (if caught early) with toothpaste (a touch) and a damp cotton swab, or you can use cerium oxide in the same manner. If the fungus is left alone, it will make the coating and glass milky.

The 90mm lens is close enough to the 100mm lens that the frame lines should be okay. You can verify this by using a Mamiya ground glass back.
 
Frontman said:
A box with a UV lamp will keep the fungus at bay, these are used by barbers and others to keep their instruments free of bateria and such.

The fungus in Sekor lenses is easily removed (if caught early) with toothpaste (a touch) and a damp cotton swab, or you can use cerium oxide in the same manner. If the fungus is left alone, it will make the coating and glass milky.

The 90mm lens is close enough to the 100mm lens that the frame lines should be okay. You can verify this by using a Mamiya ground glass back.
Click to expand...

Do you have a spare rear element for my 90/3.5 or can you send me a quote for a 100/3.5?

Mine is a Standard Press without any frame lines (ever) I remember fiddling with this camera as a little kid and it helped me how to focus range finders, but I have never seen any frame lines other that those supplied with the viewfinder masks!
 
RBruceCR said:
Do you have a spare rear element for my 90/3.5 or can you send me a quote for a 100/3.5?

Mine is a Standard Press without any frame lines (ever) I remember fiddling with this camera as a little kid and it helped me how to focus range finders, but I have never seen any frame lines other that those supplied with the viewfinder masks!
Click to expand...

Actually, I believe I do have one an extra 90/3.5, I'll see if I can find it.
 
Pablito said:
There is no way to avoid fungus in the tropics. You can use a dry box, but obviously the lenses are not going to be in there all the time. Also, fungus likes the dark. Bright light helps prevent fungus.

In my experience, a lens infected with a moderate amount of fungus can still produce sharp and contrasty images, but each case is unique....
Click to expand...

Hi can you describe what a dry box is? I remember mom being a florist, to dry flowers on a tin box filled with silca gel. Is that what it is?
 
Pablito said:
There is no way to avoid fungus in the tropics. You can use a dry box, but obviously the lenses are not going to be in there all the time. Also, fungus likes the dark. Bright light helps prevent fungus.

In my experience, a lens infected with a moderate amount of fungus can still produce sharp and contrasty images, but each case is unique....
Click to expand...

Hi can you describe what a dry box is? I remember mom being a florist, to dry flowers on a tin box filled with silca gel. Is that what it is?

I had the 65/6.3 lens cleaned and lubed. It had a spec of fungus in the center of the rear element!
 
dry box

dry box

Im living in Hawaii and recently got this small cabinet from Japan.
It regulates humidity as well as sterilizes the air inside by means of photocatalysis.

I have heard some sad stories about moldy lenses here, so I'm hoping this does the trick!
 

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WJJ3 said:
Im living in Hawaii and recently got this small cabinet from Japan.
It regulates humidity as well as sterilizes the air inside by means of photocatalysis.

I have heard some sad stories about moldy lenses here, so I'm hoping this does the trick!
Click to expand...

Outstanding! If only I could find a model to chill some wine as well, were done!
 
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