Since some weeks I'm jumping with a new Sigma 10mm (1:2.8) EX on my Canon 500D. When I leave the the air plane at 12.000ft is works fine, really nice shots! But when I'm at about 6000ft there is a small spot of moisture in the middle of the lens, on the inside.
- Is there anyone who knows this problem?
- Is there a possibility to fix this? (other then selling it again...)
Fonsz Kriegsman (The Netherlands)