Ugh - read your lens manuals some lenses rated as dust/weatherproof are only fully dust/weatherproof if they have a filter attached.

Like the Canon 17-40mm f/4 L
Manual page ENG-7

Taking the shrink wrap off and reading a manual is a offence that can have your man card revoked. wtf.

#lens #weatherproof #dustproof #filter
Shared publicly