Canon 67 Macrolite Adapter: Fit Ring Flash to Macro Lenses
By B&C Camera | Published: 2026-11-02
Category: How-to Guides
Learn how to mount a Canon ring flash on 67mm macro lenses with the Canon 67 Macrolite Adapter, including step-by-step fitting and common mistakes to avoid.
Quick answer
To mount a Canon MT-24EX, MR-14EX, or ML-3 ring flash on a lens with a 67mm filter thread, attach the Canon 67 Macrolite Adapter to the lens first, then clip the flash head onto the adapter. This adapter is the correct interface for 67mm lenses; using it prevents cross-threading and ensures the flash sits securely.
Why the adapter is necessary for 67mm lenses
Canon ring flashes like the MT-24EX and MR-14EX are designed to mount via a dedicated adapter that screws into the lens's filter thread. Lenses with a 67mm filter size require the Canon 67 Macrolite Adapter; without it, the flash cannot attach properly. The adapter also positions the flash at the correct distance from the front element, which helps maintain even lighting for close-up work.
When to use a step-up or step-down ring
If your lens has a filter thread smaller or larger than 67mm, you can use a step-up or step-down ring to convert the thread size, but this adds extra thickness and may cause vignetting or stress on the adapter. For the most secure fit, use the Canon 67 adapter directly on a 67mm lens. Also note that the adapter is not compatible with lenses that lack a filter thread or have a rotating front element during focus.
Step-by-step: mounting your ring flash with the Canon 67 adapter
- Check lens filter thread size: Confirm your lens has a 67mm filter thread (usually printed on the lens barrel or front cap). If it is not 67mm, you will need a step-up or step-down ring, but be aware that this may affect stability and lighting. Using the wrong size adapter can damage threads or leave the flash loose.
- Attach the adapter to the lens: Screw the Canon 67 Macrolite Adapter onto the lens filter thread clockwise until it is snug. Do not over-tighten; finger-tight is sufficient to avoid binding. Cross-threading is a common mistake—start threads gently and check alignment before tightening.
- Mount the ring flash onto the adapter: Align the flash head's mounting ring with the adapter and press or twist to lock it into place according to your flash model's instructions. The MT-24EX and MR-14EX typically clip on, while the ML-3 may require a different attachment method. Test that the flash is secure by giving it a gentle tug; it should not wobble.
- Verify alignment and clearance: Look through the viewfinder or at the lens front to ensure the flash ring does not obstruct the lens or cast shadows. Adjust the rotation of the adapter if needed. If the flash blocks the lens or autofocus assist, reposition the adapter or remove any step rings.
Product facts
- Canon 67 Macrolite Adapter: Attaches MT-24EX, MR-14EX, or ML-3 to most 67mm filter size lenses. This adapter is the direct mounting solution for these Canon ring flashes on 67mm lenses, eliminating the need for improvised setups.
Canon 67 Macrolite Adapter
