Trendy color powder runs can render pro lenses “financially not feasable to repair”

[pRICE cUBE]

DP wrote:
Wouldn't a simple UV filter help keep the powder out (from the front elements, at least)? I sure wouldn't be changing lenses in the middle of all that!

Lenses are not airtight, they will suck in some air when zooming occurs. Some are worse than others. Even "wether resistant" lenses are not airtight.