The newer Dual Gain Output (DGO) sensors that are found in Canon, Sony and Panasonic cameras, as advertized, move the camera’s dynamic range from 12 to 16 stops; the old Dual Conversion Gain (DCG) sensors move the range from 12 to 13-13.5 stops. What is often not advertised is that this dynamic range is not constant and changes as the camera’s ISO is increased. In addition, because mirrorless cameras have both a mechanical and an electronic shutter, the dynamic range varies depending on which shutter you use. Keep in mind that the differences are subtle, and they may not be noticed by most photographers.
| Feature | DGO (Dual Gain Output) | DCG (Dual Conversion Gain) |
| How it Works | Simultaneously reads each pixel at two different amplification levels (high and low) for a single exposure. | Switches between two different ISO “circuits” or gain paths (High and Low) depending on the lighting. |
| Best Used For | Low ISO settings and mechanical shutters to achieve maximum dynamic range (often ~1 stop improvement). | High ISO performance and electronic shutters; it is more “consistent” across different shooting modes. |
| Common Devices | High-end cinema cameras like the Canon C300 Mark III and newer 2026-era flagship sensors. | High ISO performance and electronic shutters make it more “consistent” across different shooting modes. |
The DCG sensor, although its dynamic range is more limited, will have less noise in the shadows and is not negatively affected by switching to an electronic shutter at various ISOs. When using a mechanical shutter, however, it can be less effective in some low-light situations. The DGO sensor at base ISO preserves detail in both shadows and highlights with its broader dynamic range; however, it can lose that advantage when switching to an electronic shutter or increasing ISO.