Dirty Camera Filter

[DramaKing]

I just purchased some used camera filters, including an FL-D filter with what appears to be soap scum on the glass. I have some cleaning fluid and q-tips, but it doesn't seem to be working well. I also have lens tissues. Any suggestions as to what I should be doing, or is it a lost cause?

 

[richard ide]

Try CLR on a Q tip or Sodium Hydroxide if vinegar (stop bath) does not work. Extreme caution with both is required.

 

[darinwc]

distilled white vinegar works great for removing mineral deposits from glass.. also great for fungus.
Finish up with alcohol.

 

[Rol_Lei Nut]

My old favorite; Lighter fluid.

 

[darinwc]

lighter fluid will not remove mineral deposits. It works great for removing finger prints and oil.

 

[Rol_Lei Nut]

lighter fluid will not remove mineral deposits. It works great for removing finger prints and oil.

Picking nits here, but possible "soap scum" isn't exactly mineral deposits.

Though I do agree on the use of vinegar on the latter...

For some shock value, I have put filters, lens elements and various mechanical components through my dishwasher (gentlest cycle) with excellent results. YMMV!!