Seamless Arca Compatibility with RRS Precision
Features an integrated Arca-style dovetail for wide compatibility with most Arca quick-release systems while meeting the 1.5" RRS Dovetail Standard for enhanced precision and security.


RRS-Lock® Safety Stops
Prevents your gear from accidentally slipping out of compatible quick-release clamps, adding security and confidence to your kit.
QD-Socket
Simplifies strap use for on-the-go portability.


Accessory Mounting Points
Includes 1/4-20 and 3/8-16 threaded sockets for full customization.
Extended Design
Enhances grip for comfortable handheld zoom and focus adjustments with less fatigue.


Direct-fit replacement
Matches the OEM lens collar diameter for a true direct-fit replacement—no additional mounting hardware needed.
Lightweight Durability
Crafted from 6061-T6 aluminum with a type II hard anodized finish for a robust yet lightweight build.

Dimension | Measurement | |||||
---|---|---|---|---|---|---|
Length | 4.5" (115 mm) | |||||
Width | 4.6" (117 mm) | |||||
Height | 4.5" (115 mm) | |||||
Height | 3.5 oz (100 g) | |||||
Country of Origin | ![]() |
What's in the box?
(1) LCA-51 Lens Collar
(1) LCF-55 Replacement Foot
(2) M3 Safety-Stop Screws
(1) M2.5 Hex Key for M3 Screws
(1) User's guide
RRS Quick-Release Systems
Find your lens or camera plate here
Learn more about our quick release systems and find the right fit for your kit.
Learn More
LCA-51 Collar & LCF-55 Foot Package for Canon 100-500 RF

Where will you go?
Really Right Stuff
Elevate your vision. 30+ Years Committed to Perfection. Unleash Your Creativity.
Our Story