sk66
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I've read this, but it makes no sense to me... and my testing w/ the Z9 doesn't seem to support it.one thing I read over on Nikonians is that the z7ii reverts to the slowest speed of a card that is inserted, does that apply to the z6ii ???
What will happen is that the moment you start writing to both cards things slow down significantly. Like from unlimited buffer to 300 images max (Z9 with 2 high speed CFE cards, HE*). And it slows down even further if you have it write anything other than the same file type to the second card. In the case of recording raw, having it write jpeg basic (the raw file's embedded thumbnail) to the second card is the fastest mode; with raw to both cards next.
Yes, the cards are limited to whatever their individual max is; but I've seen nothing that clearly shows that a slower card lowers the write speed to both cards... and why would it? I don't think it's the same thing as combining ram chips with different bus speeds (which does throttle the entire pipeline). In either case, the dual card penalty is so significant that it makes the whole "I need the fastest card possible" stuff only relevant to recording video or if the second card is used in overflow mode (where only 1 card is used).
I've done similar tests with D4 (2 XQD) and D850 (XQD/SD) with similar results...
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