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Review Summary
2020-06-14T04:18:31
Love this adapter! Changes my 1.7 eos r 4k crop to 1.24 and makes all my lenses I mainly 2.8 or faster, I feel that much more inspired and capable of shooting cinematic footage now due to this adapter. Its priceless truly!
DON M.
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Canon RF series camera: EOS R and EOS RP
Canon EF-mount Lens
Canon EF-Extender (Teleconverter)
Carl Zeiss EF-mount Lens
Sigma EF-mount Lens
Tamron EF-mount Lens
Tokina EF-mount Lens
Contax N mount lenses modified to Canon EF by Conurus
Contax 645 NAM-1 adapter modified to Canon EF by Conurus
Canon RF
Canon EF
0.71x
5 Elements in 4 Groups
1/4"-20 Female
7.87 oz (223g)
4897050182574
Models | SKU: MBSPEFEFRBT1 MFR: MB_SPEF-EFR-BT1 $479.00 Special Order Generally ships in 7-14 days, subject to availability | SKU: MBSPPLEFRBT2 MFR: MB_SPPL-EFR-BT2 $719.00 In Stock Usually ships within 2-5 Days | $429.00 In Stock |
---|---|---|---|
Features | Full AF Adapter, SpeedBooster / Baveyes | SpeedBooster / Baveyes | Full AF Adapter |
Style | - | Standard | With ND Filter |
Camera Fitting (Male) | Canon RF | Canon RF | Canon RF |
Lens Fitting (Female) | Canon EOS EF | PL Mount | Canon EOS |
Get one today
By DON M.
Love this adapter! Changes my 1.7 eos r 4k crop to 1.24 and makes all my lenses I mainly 2.8 or faster, I feel that much more inspired and capable of shooting cinematic footage now due to this adapter. Its priceless truly!
Bring your filmmaking to the next level with the Canon Full-Frame EF-Mount Lens to Canon RF-Mount Camera T Speed Booster ULTRA 0.71x Adapter. This high-quality, durable adapter is designed to adapt Canon EF mount full-frame lenses to the innovative Canon RF mount, expanding your lens options and enhancing your camera's capabilities.
This compact and versatile adapter is perfect for filmmakers seeking to reduce the 4k video crop factor of EOS R (1.75x) and EOS RP (1.63x) to 1.24x and 1.15x respectively, bringing the field of view closer to still photo mode. While primarily designed for video, it can also be used for still photography when the camera is configured to APS-C mode.
The Speed Booster ULTRA boasts an advanced 5-element/4-group optical design by Caldwell Photographic Inc., incorporating ultra-high index tantalum-based optical glass. This innovative design ensures extraordinary optical performance, improved corner sharpness, less distortion, and reduced vignetting.
With a magnification of 0.71x, the Speed Booster ULTRA effectively reduces the crop factor of 4k video on EOS R and EOS RP. It's designed to work well with virtually all full-frame SLR lenses, transforming professional-grade f/2.8 zoom lenses into high-speed zooms and high-speed fixed focal length lenses into wider, faster lenses.
The adapter also increases the maximum aperture by 1 stop, with a maximum output aperture of f/0.9, and increases MTF. It features autofocus with adjusted AF speed, dual-pixel autofocus (DPAF), video AF support, and image stabilization (IS) lens support. The built-in multi-function Control Wheel allows for assignable functions such as ISO, shutter speed, or aperture control, and depth-of-field preview.
Constructed from durable aluminum alloy and brass with chromium plating, the adapter is designed to withstand the rigors of professional use. It features a detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads, and a rubber gasket to protect the RF mount connection from dust and moisture.
Please note that this adapter does not support 60p (FHD) video, Canon EF-S Lens, APS-C Lens, lens correction such as peripheral shading, CA and distortion, focus confirmation "chip" (e.g. Dandelion), M42 screw mount adapters, or stacking non-Metabones/non-Conurus mount adapters on top.
Experience the difference the Canon Full-Frame EF-Mount Lens to Canon RF-Mount Camera T Speed Booster ULTRA 0.71x Adapter can make in your filmmaking today.