Hi,
Old Porros (and other non-waterproof bins) are often subject to funghi growing in objective tubes. This causes the image to appear blurry.
I'd like to know why they grow and exactly where they grow (i guess it's between prisms but i can't know for sure).
Is there any way of cleaning the bins without dismantling everything? I'm not afraid of dismantling but adjustments when assembling look scary to me.
Or is there a tutorial on how collimation should be performed? I once went through a trial-and-error adjustment procedure and i spent a whole week without achieving a perfect result.
Any ideas welcome.
With best regards,
zp.
Along these lines: What is the best way to determine if there is fungus inside the bin, that is, what does it usually look like.
Bob
I think that you are refering to mildew getting into the binoculars. This is often happens with older models without a waterproof body that get wet and are not dryed properly. I was caught in a downpour about 15 years ago, was soaked through to the skin, my bins were not waterproof, unfortunately there was so much water penetration that I was advised they were beyond cleaning. Now all my binoculars are waterproof.
You could dismantle them and clean the optics but your chance of putting them back together and being able to use them are minimal/non existent.
Take them to a specialist, obviously it won't be free but if the binoculars are a good make it can be worth it. If the binoculars are low cost it is better to discard them and get new.
Keith