Cleaning up a Canon RF lens

[squinza]

Hi everybody. At last I managed in finding a 50/1.5. Nice lens, I must say, but it shows quite a lot of internal dirt. Now seems quite unusable wide open, must stop down a notch to obtain a good image.

OK, it's time to open it up. I have a couple of lens spanners, but the question is: once I open the lens, how do I clean the internal lenses? Alcool? Sandpaper 🙄? Gasoline (with the aid of a match) 😀?

 

[radi(c)al_cam]

DON'T ::: I repeat DON'T ::: put it into your washing machine!

 

[cfritze]

Squinza:

A fellow RFF member posted this description a few weeks/months ago

I believe it notes that the Canon 50 LTM lenses were similarly constructed...

 

[squinza]

Nooo the washing machine was not an option...
cfritze, thanks for the link, seems quite interesting. I'm gonna try it out!

 

[Pirate]

Where do you find Lens Spanners? I'd like to get a couple.

 

[fbf]

check ebay. There are sets of spanner wrench for sale.
Microtools also has it though a bit more pricey.

 

[Steve M.]

Wonderfully straight forward and clear tutorial. Thanks Johan.

 

[squinza]

Where do you find Lens Spanners? I'd like to get a couple.

Yeah, ebay's the right place!