What I learned: replacing a front lens is not that difficult. An UV filter almost costs as much as a new front lens.
The lens fell on the floor, sun-hood came loose and took front ring (with UV-filter) off the lens. Front lens element scratched.
Replaced front lens, wasn't hard to do, took just 15 minutes.

Lens fell on floor, front lens damaged and front ring broke loose

New front lens, 3 tiny screws

Old front lens with scratch

Last part, ring screwed in.

The lens fell on the floor, sun-hood came loose and took front ring (with UV-filter) off the lens. Front lens element scratched.
Replaced front lens, wasn't hard to do, took just 15 minutes.

Lens fell on floor, front lens damaged and front ring broke loose

New front lens, 3 tiny screws

Old front lens with scratch

Last part, ring screwed in.
