Sony has launched the Alpha 7R IV (or a7R IV), its latest 35-millimeter full-frame camera. It is the first such product to feature the new, back-illuminated, Exmor R CMOS sensor with a 61.0MP resolution. The a7R IV is also capable of professional-grade 4K video, an APS-C mode and USB 3.1 Gen 2 transfer speeds via a type C port.
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