We’ve all come across a situation where we’ve had a filter on a lens that just wouldn’t come off. If you haven’t, you will one day. Switching environments, or just leaving your filter on there for too long can cause it to pretty much become embedded into the front lens element. At other times, cheap filters, or the wearing down of coatings on the metal lens ring or filter itself can lead to galvanic corrosion.
In a recent podcast at Tested, former Mythbuster Adam Savage recounts the story of how he removed a shattered filter. How did it become shattered? Well, Norm’s Canon 24-70mm f/2.8II lens fell to the ground along with his shiny new Canon 5D Mark IV after his hand got knocked walking into The Cave. After much panic to determine whether it was just the filter or the lens elements had cracked, the plan began to get it off. A task which turned out to be easier said than done.