• This ring allows you to use a 77mm bottom threaded Conversion Lens or Filter, on a 90mm front thread such as on the Canon XL1 or similar. The rear of this Clamp-on step-down ring is 90mm ID (inside dimension).
It clamps on to the front of a lens that has a Canon XL1 or similar size, stepping it down to accept 77mm add-on lenses or filters, as the front of the step-up ring is a 77mm ID thread.
|Cavision Clamp-on Step-up Ring for 86mm Thread Lens to 3.65" - Ring Rear: 90mm (ID) Clamp Ring Front: 3.65"||$19.00|
|Cavision Clamp-on Step-up Ring for 62mm Thread Lens to 72mm - Ring Rear: 65mm (ID) Clamp Ring Front: 72mm||$26.50|