Meike has released two new drop-in filter lens adapters. There’s the Meike MK-EFTE-C which allows you to mount Canon EF mount lenses onto Sony E mount bodies. The other is the Meike MK-EFTR-C to adapt Canon EF lenses to Canon RF mount lenses. Both lens adapters appear to offer a passthrough connection for electronic communication, allowing full control over your lens from the body itself.
It will be interesting to see if and how Canon responds to the announcement, given their recent actions towards 3rd party RF lens makers. This isn’t exactly a lens, but it will communicate with the camera in the same way autofocus lenses do, translating everything to EF signals to be passed along to the lens you have mounted on the other side. Still, both adapters come supplied with clear and VND filters.
Meike MK-EFTE-C – Canon EF to Sony E Adapter
The new Meike MK-EFTE-C adapter allows you to mount Canon EF mount lenses to Sony E mount bodies. This concept isn’t anything new. It’s been something that’s been possible since the days when Sony was the only company making full-frame mirrorless cameras. But this adapter allows for the use of drop-in filters, similar to Canon’s EF to RF mount adapter. In fact, the drop-in filters for Meike’s system look pretty much identical to Canon’s, too.
Meike says the MK-EFTE-C adapter weighs around 110g and measures a mere 72mm in diameter by 26.7mm in depth, correcting the flange distance from Canon EF to Sony E. Electronic communication is preserved through the adapter, allowing your Sony E body to talk to your Canon EF mount lens for things like autofocus, aperture control and sending information back to the camera to be stored in the EXIF data.
When it comes to price, the Meike MK-EFTE-C standard package includes the adapter itself, along with a variable ND filter (they don’t say how many stops it is) and a clear filter for when you don’t want to use ND but need to close up the gap. It’s available to buy now for $199.99 and appears to have already begun shipping.
Meike MK-EFTR-C – Canon EF to Canon RF Adapter
If the adapter above didn’t catch Canon’s attention, then this one almost certainly will. This is the Meike MK-EFTR-C drop-in filter adapter that lets you mount Canon EF mount lenses on Canon RF mount bodies. It’s essentially a direct drop-in replacement (if you’ll pardon the expression) for Canon’s own drop-in filter EF to RF adapter. Except, this one comes at less than half the price of the Canon. If demand for adapters is still high enough, this is definitely going to be taking a chunk away from Canon’s revenue – assuming the Meike one works just as well as Canon’s.
Looking at the designs of the filters, too, it really does appear that they’re exactly the same design as Canon’s. Meaning you could also drop these filters into Canon’s adapter or Canon’s filters into this adapter. Perhaps Canon isn’t as upset about EF to RF adapters, though, even if they do provide autofocus, as it helps Canon to sell some of that old EF lens stock taking up space in warehouses.

Left: Meike EF to E adapter / Right: Canon EF to RF adapter – the drop-in filter design is very similar!
As with the Sony adapter above, it provides electronic communication between the camera and lens for lens control as well as feedback for storing in EXIF data. It also supports image stabilisation for lenses that feature that capability built-in. The Meike MK-EFTR-C adapter is available to buy now for $159.99 and is shipping now.
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