Hot take: ultrasonic cleaners aren't always the answer

Tbh I was trying to clean a sticky shutter mechanism on an old Canonet and every forum said ultrasonic bath. I read a 1970s repair manual that said just use lighter fluid and a brush. Tried it and it worked way better without risking the lubrication. Has anyone else had better luck with old school methods over the fancy stuff?

3 comments

3 Comments

shane_park921mo agoMost Upvoted

My buddy tried ultrasonic on his Pentax and it wrecked the focus ring dampening grease.

logan_mitchell1mo ago

Man that sucks about the dampening grease, I've heard those Pentax rings are a pain to re-lube if they get messed up. Hope your buddy can get it sorted without too much hassle.

the_piper1mo ago

Whoa wait, ultrasonic? On a lens? Thats wild. I didnt even know people tried that. Feels like that would mess up more than just the grease. Like the elements could get knocked loose or something. I would be way too scared to put glass in one of those machines. Honestly didnt realize ultrasonic was a common thing for lens repairs.