achita_lin Posted February 3, 2017 Share Posted February 3, 2017 <p>Hi there, I've try to remove the fungus from the lens. The only issue left is the fungus on the rear element seems to be there.<br />There are 3 attempts I have done.<br /><br />1. Hydrogen Peroxide + Ammonia (1:1) at 2 minutes <br />2. Hydrogen Peroxide + Ammonia (1:1) at 3 minutes also<br />3. Hydrogen Peroxide + Ammonia (2:3) at 2 minutes<br /><br />But non of these precess come to a beautifully finished.<br /><br />Need some suggestion.<br /><br />Thank you.<br /><br /></p> Link to comment Share on other sites More sharing options...
SCL Posted February 3, 2017 Share Posted February 3, 2017 <p>If the fungus has etched the glass, there is nothing you can do short of sending it to a specialist for removal and recoating...all quite expensive. This isn't a particularly expensive lens, so you might want to pick up another copy and switch elements.</p> Link to comment Share on other sites More sharing options...
User_4754088 Posted February 3, 2017 Share Posted February 3, 2017 <p>One of the advantages to the old "uncoated" lenses from the 1930's & 1940's is that when they were attacked by fungus, you could take them apart, clean them up, and they were as good as new.</p> <p>Unfortunately with newer coated lenses, the fungus attacks the coatings. So you can get rid of the fungus, but now you have etched coatings on the elements. What Stephen said, the only real fix is to have the lenses stripped of their coatings and recoated.</p> Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now