The GoPro HD2 is claiming to be 2 times better then the GoPro HD1. is it?
the simple answer seems to be yes and here's why...
It is using a better lens for a sharper image
The Colour Rendering has been very much improved
It appears to have a better Dynamic range, (I'm not sure if it is supposed to)
The Menu is finally USABLE! and simple
There is far less Aliasing, however, it is still quite prominent
There is an HDMI output and Microphone input
There is far less noise, however, I don't see an amazing improvement in low light if any. However, I used to find the go pro HD1 very good in bright daylight situations..only. The HD2 is far battered inside and on cloudy days as u can see.
The light metering seems to be very much improved and there is very little to no aperture flick as it stops up/down. This was terrible on the HD1.