Flagship of the 2014 Olympics: Nikon D4S mileage diagnostics

Nikon D4S (2014) - an improved version of the D4, which was used to film the Winter Olympics in Sochi. New 16.2-megapixel sensor with improved low-light performance (ISO 409600 with expansion!), even faster EXPEED 4 processor and improved autofocus. At the same time, the record speed of 11 fps and the professional resource are preserved. On the secondary market, D4S is always a professional equipment with an intensive history of use.

Winter Olympics, World Championships, news agencies - D4S has worked in the most demanding conditions. Professional photographers squeezed maximum speed out of it. The strongest case with triple moisture protection practically does not wear out on the outside, but the internal mechanics are another matter.

400,000 guaranteed positives: reality or marketing?

Like the D4, the flagship D4S has an official shutter life of 400,000 operations. This is not marketing - the mechanism is truly outstanding. Real data from service centers confirm the operation of the valves far beyond this mark. However, a camera with 300+ thousand frames is already a “veteran”, and when purchasing you need a thorough assessment of the condition of all components.

Reading the system counter from D4S NEF files

The EXPEED 4 processor records every mechanical shutter operation in the MakerNotes block. The data is protected from being reset. For diagnostics, you need the original NEF or JPEG from the memory card.