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Canon EOS 1D Mark IV

Canon's latest incarnation of the EOS 1D is the first time since its release that the model was playing catch-up. The Nikon D3, released last year, was Nikon's first full-frame 35mm sensor, and it's still competitive against the newly released EOS 1D Mark IV. As is par for the line, the Mark IV has an APS-H sized sensor which can fire 10fps at 16MP, and with calibrated ISO to 12800. Its autofocus has been updated, and Cannon assures would-be purchasers that the kinks of the Mark III's autofocus system have long been worked-out.