If you’ve found that 42.2-megapixels isn’t quite enough resolution for your landscape and wildlife shooting, then Sony has some good news – its new A7R IV is the first full-frame camera to have a 61-megapixel sensor. Its predecessor, the Sony A7R III, was a trailblazer for high-res mirrorless cameras when it arrived in 2017, combining powerful hybrid autofocus with the kind of resolution demanded by pro landscape and wildlife snappers, all in a body that was significantly smaller than DSLR rivals like the Nikon D850. The A7R IV continues that theme, bringing the highest ever resolution on a full-frame camera, though Sony’s keen to stress that it’s not just flexing its specs muscles and breaking records for the sake of it.