Canon EF to EOS R Drop-In Filter Mount Adapter with ND & UV Filters For Sale

Expand the versatility of your existing Canon EF/EF-S mount lenses with the Meike MK-EFTR-C Auto-Focus Mount Lens Adapter, designed to connect compatible EF/EF-S lenses to Canon EOS R-mount mirrorless cameras.

This adapter features an integrated drop-in Variable Neutral Density (VND) filter with an adjustable range from ND3 to ND500, equivalent to approximately 1.5 to 9 stops of light reduction. It also provides an additional filter holder, allowing photographers and videographers to adapt their lens setup without relying solely on front-mounted filters.

The adapter includes electronic contacts to support autofocus and camera-controlled lens aperture functions with compatible lenses and cameras.

• EF/EF-S to EOS R Adapter: Allows compatible Canon EF and EF-S mount lenses to be used with Canon EOS R-mount cameras.

• Built-In Variable ND Filter: Includes a drop-in VND filter with an ND3–ND500 range.

• 1.5–9 Stop Adjustment: Provides a broad range of light reduction for compatible shooting conditions.

• Autofocus Support: Electronic contacts are designed to maintain autofocus functionality with compatible lens/camera combinations.

• Electronic Aperture Control: Allows compatible lenses to communicate aperture information with the camera.

• Gold-Plated Electronic Pins: Designed to provide reliable electronic signal transmission.

• Stable Lens Mounting: Built-in structural stability helps maintain secure lens positioning.

• Aluminum Construction: Durable metal construction for everyday photographic use.

• Additional Filter Holder: Includes an extra holder for flexible filter Filter: Designed with multi-coating for the supplied optical This adapter is not designed as a water-resistant accessory.

The Meike MK-EFTR-C is designed to adapt:

Canon EF / EF-S Mount Lenses → Canon EOS R Mount Cameras

The supplied compatibility information includes EOS R-series cameras such as:

• Canon EOS R

• Canon EOS R5

• Canon EOS R6

• Canon EOS RP

• Canon EOS R7

• Canon EOS R10

• Canon EOS C70

Please verify your exact camera and lens combination before TypeLens Mount Adapter with Drop-In FilterLens MountCanon EF / EF-SCamera MountCanon EOS RFilter TypeVariable Neutral DensityVND RangeND3–ND500Light ReductionApprox. 1.5–9 StopsAdditional FilterUV Filter / Holder with compatible equipmentElectronic ContactsYesFilter EffectNeutral Density / UltravioletWater ResistanceNot Water ResistantProduct DimensionsApprox. 2.87 × 2.87 inFilter SizeApprox. 7.2 cmQuantity1Drop-In Variable ND Filter

The integrated VND system provides an adjustable light-reduction range from ND3 to ND500, corresponding to approximately 1.5 to 9 stops.

A variable ND filter can be useful when you need to control the amount of light entering the lens without changing the lens aperture or shutter settings beyond your intended creative setup.

Potential applications include:

• Outdoor photography

• Landscape photography

• Video recording

• Bright daylight shooting

• Cinematic video setups

• Controlling exposure while maintaining preferred camera settings

The actual effect and usable range can vary depending on the lens, camera, focal length, lighting conditions, and settings.

The adapter features built-in electronic contacts designed to preserve communication between compatible EF/EF-S lenses and EOS R cameras.

With compatible equipment, the adapter supports:

• Autofocus functionality

• Electronic aperture control

• Lens-to-camera electronic of specific autofocus modes, stabilization, metadata, or other electronic functions can vary by lens and camera model.

  Gold-Plated Electronic Pins

  The adapter uses gold-plated electronic contacts, designed to provide reliable signal transmission between the compatible lens and camera body.

  Clean and properly aligned contacts are important for maintaining consistent electronic communication.

  Stable Mounting Structure

  The adapter is designed with a stable mounting structure to help maintain secure positioning between the lens and camera body.

  A secure connection is important for maintaining proper lens alignment and reliable electronic communication during photography or video recording.

  Aluminum Construction

  The adapter uses an aluminum construction, providing a durable metal housing while keeping the accessory practical for photographic setups.

  The adapter is designed to remain securely positioned between the compatible EF/EF-S lens and EOS R camera mount.

  Additional Filter Holder

  In addition to the built-in VND functionality, the product includes an extra filter holder, providing additional flexibility for compatible filter configurations.

  This can be useful for photographers and videographers who regularly work with different optical filter setups.

  UV Filter Function

  The supplied filter configuration also supports an ultraviolet (UV) filter effect.

  UV filters can be used in photographic setups for optical filtering and, depending on the shooting situation, as a protective filter element.

  Applications

  The Meike MK-EFTR-C can be useful for:

  • Landscape photography

  • Portrait photography

  • Outdoor photography

  • Travel photography

  • Studio video production

  • Bright daylight shooting

  • Creative exposure control

  Installation

  The adapter is designed to mount between a compatible Canon EF/EF-S lens and a Canon EOS R-mount camera body.

  Before use:

  1. Confirm that both your lens and camera use the compatible mounts.

  2. Ensure the lens and camera mounting surfaces are clean.

  3. Align the adapter correctly with the camera and lens mounts.

  4. Secure the adapter fully before use.

  5. Confirm electronic functions before beginning an important shoot.

  Avoid forcing the adapter, lens, or camera mount if alignment does not occur normally.

  Important Compatibility Information

  Please verify the following before ordering:

  • Your lens uses a Canon EF or EF-S mount.

  • Your camera uses the Canon EOS R mount.

  • Your specific lens supports the desired electronic functions.

  • Your camera model is compatible with the adapter.

  • Autofocus and aperture functionality may vary depending on the specific lens/camera combination.

  This product is a mount adapter, not a standalone lens or camera.

  Care & Handling

  • Keep the adapter and filters free from dust and fingerprints.

  • Use an appropriate lens/filter cleaning cloth for optical surfaces.

  • Do not expose the adapter to water or excessive moisture.

  • Store the adapter in a clean, dry environment when not in use.

  • Protect the electronic contacts from dirt and damage.

  • Handle the drop-in filter carefully during installation and removal.

  Package Includes

  • 1 × Meike MK-EFTR-C EF/EF-S to EOS R Mount Adapter

  • Drop-In Variable ND Filter

  • Additional Filter Holder

  Important Information

  • Lens and camera are not included.

  • The VND range is ND3–ND500 / approximately 1.5–9 stops.

  • Autofocus and aperture control require compatible electronic equipment.

  • Not water resistant.

  • Actual electronic functionality may vary according to camera and lens firmware/model.

  • Always verify exact compatibility before purchase.

  Why Choose the Meike MK-EFTR-C?

  The Meike MK-EFTR-C combines an EF/EF-S to EOS R lens adapter with a convenient drop-in variable ND filter system. Its aluminum construction, electronic contacts, autofocus support, aperture communication, and adjustable ND3–ND500 range make it a versatile accessory for photographers and videographers using compatible Canon EF/EF-S lenses with EOS R-mount cameras.