Nikon has focused on bringing better image quality and improved video capabilities to its latest pro-level DSLR, the D810. Selling for $3300 in July, the full-frame camera is the successor to the D800 and D800E models (though Nikon will continue selling those models, as well). Among the D810’s updates is a newly designed 36.3-megapixel, full-frame CMOS sensor.