Sony Really Right Stuff Ballhead for NEX 7?

[LK23]

I am seeking a Really Right Stuff bullhead for the NEX 7. There are four sizes. I obviously don't need the Full Size, but one of the smaller models. I have a Gitzo 1257, three section tripod. Any recommendations?

Thanks

 

[romi.gilles]

if you have or get a qr clamp for your ballhead, i have a RRS qr plate (for nex-7), if interested.

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