Rear lens caps needed!

[aFeinberg]

Being pretty good at the internet...this is frustrating me and not sure where to find it.

Missing the rear lens caps for a Symmar-S 180 5.6 and Fujinon-W 210 5.6. Both have 67" front threads but no idea what the backs are (same size it seems).

Much thanks for the help!

aF

[Bob Salomon]

Kaiser makes push-on caps from 15mm to 120mm so they have ones that will fit. Camera stores have them. B&H stocks all of the most common sizes.

[aFeinberg]

Thanks Bob....just trying without success to find out what sizes I need. That's the issue. :/

[vinny]

measure the rear element.

[Steve Goldstein]

Schneider's literature says 70mm front, 50mm rear for the 180mm Symmar-S, and it's the same in the 1973 and 1990 brochures.

[aFeinberg]

50mm....there we go. Thanks!

[Ari]

This place is also a good resource: http://www.photofilter.com/hoods.htm#Kaiser

[oldlincoln]

The Schneider caps are usually less expensive than the Kaiser. They are marketed under the B+W brand (the maker) also. Check B&H and Adorama for various sizes. the B+W 51mm is $5.
http://www.bhphotovideo.com/c/product/475563-REG/B_W_65_069699_300_51mm_Push_On_Lens.html
I would measure the lens cell O.D. before ordering though.