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Canon Full-Frame EF-Mount Lens to Canon RF-Mount Camera T Speed Booster ULTRA 0.71x Adapter

Prices as of September 22, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$479.00
Sep 8 · Macy's
Best price
$479.00
−0% vs high
14-day high
$479.00
All stores
$479$479$479
Sep 8Sep 22
  • Macy's
Lowest in 14 days: $479.00 at Macy's. Highest: $479.00. Current best is 0% below the 14-day high.We last recorded a price on Sep 22, 2026. The chart shows the 14 days leading up to that date — there have been no price updates since.

About this product

The Metabones EF-RF Speed Booster ULTRA 0.71x Adapter enables filmmakers to use Canon EF mount full-frame lenses on Canon RF mount cameras. This compact, durable adapter reduces the 4K video crop factor on EOS R and EOS RP models, bringing the field of view closer to still photo mode. It increases maximum aperture by one stop, with a peak output of f/0.9, and enhances optical performance through an advanced 5-element/4-group design using high-index tantalum glass. The adapter supports autofocus, dual-pixel AF, video AF, and image stabilization, and features a multi-function control wheel for customizable settings. Built from aluminum alloy and brass with chromium plating, it includes a detachable tripod foot and rubber gasket for protection. It is not compatible with EF-S or APS-C lenses, 60p FHD video, or certain lens correction features.

  • 0.71x magnification
  • 1-stop aperture increase
  • f/0.9 max output
  • dual-pixel autofocus support
  • aluminum alloy and brass build
  • detachable tripod foot

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Canon Full-Frame EF-Mount Lens to Canon — Price History