The formula for digital cameras, whether DSLRs, ILCs, or mirrorless, has mostly remained the same throughout the years. Upgrades in specs like CMOS sensors and image processors are usually more modest and incremental, with resources poured instead on things like autofocus, stabilization, and other details mobile photographers may take for granted on their smartphones. The new pair of full-frame mirrorless cameras from Nikon’s Z series mixes things up a bit not with a giant upgrade but with two Expeed processors inside.
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https://www.slashgear.com/nikon-z-7ii-and-z-6ii-bring-double-image-processors-to-the-table-14642418/