A DVI signal is electrically compatible with an HDMI video signal; no signal conversion is required when an adapter is used, and consequently no loss in video quality occurs.[3] As such, HDMI is backward-compatible with Digital Visual Interface digital video (DVI-D or DVI-I, but not DVI-A) as used on modern computer monitors and graphics cards. This means that a DVI-D source can drive an HDMI monitor, or vice versa, by means of a suitable adapter or cable. However, the audio and remote-control features of HDMI will not be available unless the output supports HDMI via a DVI plug (e.g., ATI 3*** and NVIDIA GTX 2** video cards).[3] Additionally, not all devices with DVI input support High-bandwidth Digital Content Protection (HDCP). Without such support by the device, an HDCP-enabled signal source will suppress output and so prevent the device from receiving HDCP-protected content.[99] All HDMI devices must support sRGB encoding.[100]
Attached is a crappy low light comparison to my 17" imac.
