a7r iv and Canon 500mm f4 IS I

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Luckbox Junior Member • Posts: 25
a7r iv and Canon 500mm f4 IS I

I currently have an a7r II that I am using with an adapted Canon 500mm f4 IS I for wildlife, birds, etc. some pictures can be found at https://flic.kr/s/aHsmHSzAPZ

This combo does not work as well as native, understood, but it is what I got. I love the lens. I am thinking about upgrading to the a7r iv and was wondering if the tracking Af modes are available with the iv. They are not with the ii. I have bothe the Metabone V and the MC-11.  Anyone have the iv and the 500mm I version that could shed some light on this? The updated af would likely be better either way but having actual tracking AF would be fantastic.

 Luckbox's gear list:Luckbox's gear list
Sony a7R II Canon EF 200mm f/2.8L II USM Canon EF 300mm f/4.0L IS USM Canon EF 500mm f/4.0L IS USM Canon Extender EF 1.4x II +10 more
Pentax K-r Sony a7 Sony a7R Sony a7R II
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