Hi, i found yesterday that there are two very little fungus (like * this!) in the front element of my 75-300mm usm, besides those the lens is perfectly clean, so i was wondering if i could killem by sun baths (is this really helthy!) or should i take it to the doc?, anyway i live in Costa Rica and here is fungusland how can i keep them from grow again in the same or other lens. (the cheap way!)

Really, thanx in advance. And forgive my english.

-- beltran lara lopez (beltranlara@hotmail.com), February 07, 2000

Answers

I have heard of others using a sun bath to stop fungus from growing, but it doesn't remove the marks that are already there. There are also intense UV light boxes to do this as well. However, as I recall at least some of the Canon 70-300's are quite easy to remove the front lens element. A competent shop could do this without much trouble, and if you are quite handy, you could do it yourself. It isn't like a major dismatling with this lens design, although there are some adjustment screws to keep the lens in proper position, so take care with those.

-- Jim Strutz (jimstrutz@juno.com), February 09, 2000.