I have a 135mm Sironar-N with neither front or rear lens caps.
I've tried Kaiser push-on caps 40mm (too tight to fit the back), 41mm (too loose on back and too tight to fit on the front), and 42mm (too loose on front)!
Presume I need a 40.5mm cap for the back and a 41.5mm cap for the front.
Has anyone any idea where I could get these from please - ideally but not essentially in the UK?
Someone got the Kaiser caps for me and I can't find a Kaiser website anywhere to see whether they make 40.5mm and 41.5mm caps.
Thanks