Yes and no, but mostly no. Lighter skin reflects more light (which means more signal), so it's inherently easier to image (it would be harder in extremely inten

Yes and no, but mostly no. Lighter skin reflects more light (which means more signal), so it's inherently easier to image (it would be harder in extremely intense light, but getting fast shutter speeds is a lot easier than dealing with not having enough photons). Auto-exposure algorithms tend to work more accurately on lighter skin, too, which could be improved but is generally not something implemented at the hardware level in a webcam as far as I know (software can ask for different iso sensibility and shutter speeds).