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We’ve been on the hunt for an affordable but good-performing 3rd party EF-EOS R mount adapter, given the shortage at Canon. We think the Meike EF-EOS R Auto-Focus Adapter may fit the bill! Voking Digital via Amazon is selling it for only $53.99.
This is an auto-focus adapter that just showed up on the market, and the reviews (although a small sample) are great! This adapter has much better reviews and is rated higher than other adapters that are in a similar price range ($49, $55, $58, or $76).
At this price you could buy one of these adapters plus a Canon adapter (when back in-stock at $99), and still be less than the $170 asking price from resellers.
Ordered one, sent the K&F back, which has no electrical connection.