TREN
Nikon Coolpix P340 read noise vs ISO
The Nikon Coolpix P340 was measured at 9 ISO settings from ISO 80 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (80) read noise is 1.13 DN. A second gain (dual gain) kicks in at ISO 12800, cutting input-referred read noise by about 1.5 stop. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.
Nikon Coolpix P340 read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 80 | 1.125 | 0.17 |
| 100 | 1.434 | 0.52 |
| 200 | 2.639 | 1.40 |
| 400 | 4.028 | 2.01 |
| 800 | 8.112 | 3.02 |
| 1600 | 14.825 | 3.89 |
| 3200 | 28.443 | 4.83 |
| 6400 | 67.649 | 6.08 |
| 12800 | 48.168 | 5.59 |