Is This Lens Fungus, a Dealbreaker?
Is This Lens Fungus, a Dealbreaker? Just got a coveted Sigma 20mm f1.4 DG HSM for $375, but now that it's arrived I believe it has fungus inside the front element. It almost looks like frost. How bad of an idea is it to keep this lens? I do have a return window, but there aren't anymore at this price right now. I fear most its spreading to the center of the lens, or to my other t...