Canon’s EOS R mirrorless system launches with one camera body – appropriately called the EOS R – which is by-and-large a mirrorless EOS 5D Mark IV. At its heart is a Canon-made CMOS with the same basic specs, namely a total pixel count of 31.7 million giving an effective count of 30.3 million and a maximum image size of 6720x4480 pixels. Sensitivity range is equivalent to ISO 100 to 40,000 with extensions either side to ISO 50 and 102,400. ‘Dual Pixel CMOS AF’ architecture provides onsensor phase-difference detection autofocusing (plus some additional functions… see Capture Settings). An optical low-pass filter is retained.