Canon best L lenses on Sony A7R mark II -- great results
I use this adapter permanently on my Sony A7R mark II body, and exchange Canon L lenses only. Both lenses, sony and canon, are of (almost) the same weight and size, and used canon's on eBay are much cheaper but the quality is stellar. Sorry sony/zeiss.
Moreover, I have an opportunity to buy Canon body only if I decide, that focussing speed on sony is not fast enough for me.
I am really happy with this solution, and the USB on the adapter is promise to the future firmware updates. Otherwise there are cheaper adapters, but not offering this.
Verified purchase: YesCondition: Pre-owned