





See Options
1 Year
$34.99
2 Year
$59.99
3 Year
$79.99
Need help? Ask our experts.
Review Summary
Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500
Browse our FAQ
Speed Booster
Canon EOS M series camera
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
f/0.9
Canon EF-M
Canon EF
0.71x
5 Elements in 4 Groups
1/4"-20 Female
2.8 x 1.1" (7.0 x 2.7cm)
7.51 oz (213g)
4897050182314
Models | SKU: MBSPEFEFMBT1 MFR: MB_SPEF-EFM-BT1 $479.00 Special Order Generally ships in 7-14 days, subject to availability | SKU: NVEOSMMINAF MFR: EOSM/MIN-AF $249.00 $324.00 Save:$75.00 (23%) Temporarily On Backorder Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped. | SKU: VTREFEOSM2 MFR: EF-EOS M2 $156.00 Special Order Generally ships in 7-14 days, subject to availability |
---|---|---|---|
Features | SpeedBooster / Baveyes | Basic Adapter | Full AF Adapter, SpeedBooster / Baveyes |
Camera Fitting (Male) | Canon M | Canon M | Canon M |
Lens Fitting (Female) | Canon EOS EF | Sony Alpha / Minolta Maxxum | Canon EOS EF |
An innovative and high-quality accessory for photography enthusiasts, the T Speed Booster ULTRA 0.71x Adapter for Canon EF to EF-M Mount (EOS M) Camera is a versatile tool that enhances your camera's performance. This durable adapter, manufactured by the reputable brand Metabones, is designed to convert your Canon EF lens to an EF-M mount, making it compatible with a Canon EOS M camera.
The T Speed Booster ULTRA 0.71x Adapter is equipped with an advanced 5-element/4-group optical design that incorporates ultra-high index tantalum-based optical glass. This sophisticated design ensures extraordinary optical performance, delivering improved corner sharpness, reduced distortion, and minimized vignetting.
Like its predecessor, the revolutionary original Metabones Speed Booster launched in 2013, this ULTRA version also offers a magnification of 0.71x. This feature effectively reduces the crop factor of mirrorless cameras with DX-sized sensors (APS-C), such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x.
The ULTRA design utilizes exotic materials at the cutting edge of glassmaking technology, resulting in a product that is well-corrected for use with virtually all full-frame SLR lenses, regardless of exit pupil distance. This makes the Speed Booster ULTRA a top performer with professional-grade f/2.8 zoom lenses like the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon, transforming them into 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively.
The T Speed Booster ULTRA 0.71x Adapter also works well with high-speed fixed focal length lenses such as a 50mm f/1.2, converting it into a 35.5mm f/0.9 lens with excellent contrast and resolution from the center to the edges of the image.
Key features of this compact adapter include an increase in maximum aperture by 1 stop (with a maximum output aperture of f/0.9), an increase in MTF, and the ability to make the lens 0.71x wider. It also supports autofocus, image stabilization (IS) lens support, and Video Digital IS support (on supported camera bodies).
The adapter is powered by the camera body, eliminating the need for an external power source with most lenses. It also features a detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads, and a rubber gasket to protect the EF-M mount connection from dust and moisture. The adapter's construction combines aluminum alloy and brass with chromium plating, and it has a satin surface finish for a sleek, professional look.