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.
Nikon D3100 DSLR Camera Body (Kit Box) - No Lens Included, International Version with No Warranty
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Revamped Sony Alpha a6000 Mirrorless Digital Camera: 24.3MP SLR Camera with 3.0-Inch LCD and Power Zoom Lens
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Discontinued Canon EOS 7D Digital SLR 📷 Camera Body Only with 18 MP CMOS Sensor
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Nikon COOLPIX L810 Digital Camera: 16.1MP, 26x Zoom, NIKKOR ED Glass Lens, 3-inch LCD (Blue)
95 Review