i just watched a video from T&C Northrup. Fill up the buffer with two cards in the camera and the camera is neutered for 3+ minutes until the buffer is cleared.
Is that the video titled "Sony a9 Hands-on: A $4,500 Canon 1DX Killer!" perchance...?
Where they praise silent mode, no EVF blackout, Sony's responsiveness to customers?
No, it was the hands-on, where they praised the silent shutter, EVF no-blackout (and Tony saying he could never go back to a DSLR), got 5 hours / 4000+ frames on a single battery, and Tony said he'd rather have the a9 than a 1DX or D5.
Is filling the buffer a flaw resulting from its being mirrorless? Or just Sony not using the fastest possible memory cards?
The a9 certainly is not perfect, especially with lenses. But it certainly shows how mirrorless is not only capable of photographing sports at a very high level, but that it has at least two major advantages over DSLRs (silent shutter and no EVF blackout).
And even as a "mere" wedding and event camera, it can likely chew up more DSLR market share.