Before the mark IV, there was the mark III (now both cameras), before that there was the 6D, and even earlier than that there was the Nikon D3s and the Nikon D700 already on the first shot, DDs are wider and stretch better, functioning ISO is higher, exposure metering is more accurate, and there is no need in changing.
Revamped Sony Alpha a6000 Mirrorless Digital Camera: 24.3MP SLR Camera with 3.0-Inch LCD and Power Zoom Lens
103 Review
Nikon D3100 DSLR Camera with Auto Focus-S Nikkor Zoom Lens (Discontinued by Manufacturer)
109 Review
Canon PowerShot A480 camera, black
108 Review
Nikon COOLPIX L810 Digital Camera: 16.1MP, 26x Zoom, NIKKOR ED Glass Lens, 3-inch LCD (Blue)
95 Review