Special SLIM lens cap for SLIM mount filters.
Reviewed by 2 customers
I bought a used 20mm f2.8 Canon FD mount lens from Adorama but unfortunately is came without lens caps so I had to have something I had a spare base cap but had to buy something to protect he front element and this did the job but came off too easily so I swapped it with one on an old lense I seldom use. All is OK now.
The cap fits, but slips off as easily as it slips on. I lost mine after a month. Product should have been supplied with an attached tether.