Panasonic Lumix DMC-FZ200 vs Panasonic Lumix DMC-FZ28: read noise comparison

The Panasonic Lumix DMC-FZ200 was measured at 7 ISO settings from ISO 100 to ISO 6400. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 2.36 DN. From ISO 3200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

The Panasonic Lumix DMC-FZ28 was measured at 5 ISO settings from ISO 100 to ISO 1600. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 3.58 DN. A second gain (dual gain) kicks in at ISO 1600, cutting input-referred read noise by about 1.9 stop. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.