Panasonic Lumix DMC-FZ50 read noise vs ISO

The Panasonic Lumix DMC-FZ50 was measured at 5 ISO settings from ISO 100 to ISO 1600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 5.06 DN, or 7 electrons at the sensor. From ISO 100 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 5,640 electrons; unity gain is around ISO 140.