Andy Kibber
Well-known
I have a cheap center-pinch lens cap for my Hexanon 50mm lens. Has anyone found a better replacement slip-on cap, similar to the original metal cap?
Hern
Established
They make replica Leica metal lens caps these days, you can find them on evilbay and similar sites.
Andy Kibber
Well-known
I like the idea of a Leica cap on the Hexanon 
KoNickon
Nick Merritt
As you know, the Hex's slide-out lens shade adds 2-3 mm to the diameter of any push-on cap. So something like 43mm? I'd opt for a screw-in 40.5mm cap myself.
Archlich
Well-known
The Kaiser slip-on caps, while plastic, are excellent. Snug fit with peace of mind...if you're like me, who cringe at scratch on metal.
Andy Kibber
Well-known
I think the Kaiser slip-on cap is the ticket. I just measured the outside diameter of the hood & it’s about 49mm.
Andy Kibber
Well-known
UPDATE: 49mm Kaiser slip-on cap fits snugly. 50mm cap works too but a touch loose.
mike rosenlof
Insufficient information
When I had a filter on the lens, I was constantly losing the original metal lens cap. I now have sort of permanently, a light yellow filter (40.5), a Heliopan Digital (huh?) cylindrical metal lens hood, capped by a 42mm inside diameter Schneider slip on cap that has 150 Xenar scratched on the inside. I've got my filter, my lens hood, and a lenscap that doesn't fall off and roll away. If I hadn't found the slip on cap, I would use a metal screw in. The outer end of that hood is also threaded for 40.5.
lapiduza
Member
I recently bought konica rf with heliar (not hexanon) with the konica cap. Is that the cap? https://1drv.ms/u/s!Ak1-I16TF1DXpglyHbLChpibrWh8