> therefore keeping the sensor cool until you take your exposure. That'd only be true if the sensor is a significant heat source that's unable to dissipate tha

> therefore keeping the sensor cool until you take your exposure. That'd only be true if the sensor is a significant heat source that's unable to dissipate that heat adequately. Which... I can't think of any reason that would be inherently true. The ISP generates some decent heat, which is why many cameras have limits on how long you can record 4k video. But does the cmos sensor? Especially when you're talking full-frame, the energy density seems like it'd be pretty tame. If it's not meaningfully rising above ambient temperature, then there's no reason a DSL sensor would be cooler & therefore less noisy.