Fungus, Nikon 50-300mm f/4.5.
Fungus shows up like wildfire in a flashlight test.
Fungus looks like little soft dots, usually white, sometimes fluffy, when you look into a lens in normal light.
This fungus is often found growing on fallen branches and trees all year round, particularly oak and broad-leaved trees. Their characteristic shape with wavy edges makes them easily recognisable.
Another fungus
Decorative leaves from Rattlesnake Plantain, an orchid
I should know the name, but don't ...
How about fungus? I live in Mumbai, India. It is highly humid here, rains continuously for months during the monsoon and fungus attacks every thing. Any preventive measures. I have a Nikon D 80 ...
Orange Pore Fungus (favolaschia calocera). This fungus makes a stunning photo, and it always gets a comment at slide presentations but I've since found out that this is an introduced noxious fungi.
Check lenses for fungus - spider-like growths on the lens interior. You can't get rid of the stuff - it's there forever, and it may get worse. Rotate the focus and zoom rings. Do they move smoothly? Do they catch or bind?
When the RH gets at 60 percent or higher for long periods of time, not only do cardboard packages, labels, and metal containers become damaged, but mold, fungus, and bacteria start to grow.
Condensation (water) can lead to fungus growth inside your lenses, electrical shorts and other nasty effects. I usually leave my camera in my backpack for several hours, resisting the urge to view my pictures and recharge the batteries immediately.
fungus - a fungus that can grow between lens elements resulting in feathery or hazing damage to a lens
GOST - A measurement of film speed used in the former Soviet Union.
grain ...
Maybe, you've just lifted some leaves enough to reveal a fungus and you take a picture under the cover of those leaves.
The second image is the 'after' shot.
The final solution to cleaning fungus from lens elements when all else fails seems to be toothpaste. My "UG" Nikkor-P 105/4 bellows lens was giving me decidedly foggy images.
Avoid buying a lens suffering from lens fungus. It's usually beyond economical repair, can grow, and even if repairable, fungus tends to etch the glass.[5]
Be sure to get insurance on your lens if shipped to you.
Get down! This magic mushroom becomes a towering forest fungus, thanks to 24mm lens mounted on 8mm lens. Shot with an APS-sensor camera.
Moisture building up around circuits is a fast way to short out the camera’s electronics and humidity inside a lens can cause the elements to fog. Over time, moisture will allow fungus to grow inside the lens as well.
 See also: Time, Photograph, Photography, Back, Lens
  
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