Drop a NEF file from your Nikon D300 or D300S and get the exact mechanical shutter actuation count in seconds — processed entirely in your browser, never uploaded anywhere.
Check Shutter Count →The Nikon D300 (2007) was a landmark DX-format DSLR that brought professional-grade features to the APS-C segment. With a 12.3 MP CMOS sensor, 51-point Multi-CAM 3500DX autofocus, magnesium-alloy weather-sealed body, 8 fps burst (with MB-D10 grip), and 100% viewfinder coverage, it set the standard for semi-pro DX bodies. The D300S (2009) added HD video and dual card slots while retaining the same core. The mechanical shutter is rated at 150,000 actuations.
| Camera | Type | Sensor | Rated Shutter | NEF Tag |
|---|---|---|---|---|
| Nikon D300 | DSLR | 12.3 MP APS-C | 150,000 | 0x00A7 |
| Nikon D300S | DSLR | 12.3 MP APS-C | 150,000 | 0x00A7 |
| Nikon D500 | DSLR | 20.9 MP APS-C | 200,000 | 0x00A7 |
The D300 uses a mechanical shutter for all exposures — every photo increments the counter.
| Shutter Count | % of Rated Life | Assessment |
|---|---|---|
| 0 – 15,000 | < 10 % | Lightly used — rare for this age |
| 15,000 – 60,000 | 10 – 40 % | Normal use |
| 60,000 – 100,000 | 40 – 67 % | Moderate to heavy use |
| 100,000 – 130,000 | 67 – 87 % | Heavy professional use |
| 130,000 + | 87 %+ | Near or past rated life |
Given the D300’s age (released 2007), many bodies on the used market have accumulated significant shutter counts. The D300 was popular among photojournalists and sports photographers who shot high volumes. A shutter replacement is possible but may not be economically justified given the camera’s current used value.
The Nikon D300 stores the mechanical shutter count in NEF MakerNote EXIF tag 0x00A7 (decimal 167). This is the universal Nikon shutter count field, used identically across all Nikon DSLRs and Z-series mirrorless cameras. ShutterCount reads this tag directly in your browser — no encryption or special processing is needed.
Shoot a NEF frame and drop it into shuttercount.app. The count is read from MakerNote tag 0x00A7 in your browser, instantly and privately.
Nikon rates the D300 (and D300S) at 150,000 actuations. This professional-grade rating was consistent across Nikon’s semi-pro DX lineup of the era.
The D300S (2009) added 720p HD video, a dual card slot (CF + SD), and a slightly improved 920k-dot rear LCD. The image sensor, 51-point AF system, and 150,000-actuation shutter mechanism are identical.
At today’s used prices, the D300 offers remarkable value for the build quality and autofocus performance. Its 12.3 MP sensor is dated by modern standards, but it still produces excellent results in good light and at low ISO. It’s a solid choice for learning or as a rugged backup body.
Only Nikon authorised service centres can reset the hardware counter. Always verify from an original NEF file, not a screenshot or JPEG.