Need to find your lens size? visit the Motion Picture Lens Database compiled by Richard Bradbury.

Here’s a list of some of the most common clamp on rings and their compatible lenses:

80mm: Zeiss CP.3
85mm: Celere HS Primes, Tokina 100mm Cine Macro, Fujinon MK 18-55, Fujinon MK 50-135
87mm: Cooke Mini S4/i
95mm: Sigma Cine Primes, ARRI Supreme Primes, Zeiss CZ.2 (28-80mm, 70-200mm), Leica Summilux-C, Summicron-C,
100mm: Schneider Xenon FF
110mm: Cooke S4/i, Cooke 5/i, Cooke 7/i
114mm: Zeiss CP.2, Canon CN-E Primes, Xeen Cine Primes, Tokina Vista Primes, ARRI Supreme Primes, Signature Primes, Angenieux EZ-1 & EZ-2, Zeiss CZ.2 (15-30mm), LWZ.2, Fujinon ZK Cabrio zooms