I`m not sure if this is a new setting in the 2.73.405.5 build ROM from HTC, but I have found a setting in the camera app that greatly improves taking shots in lower light levels. You appear to be able to control the ISO film speed now in the app. Set at ISO800, it seems that the 'response' of the screen is a lot better (the blurry update of the screen in low light conditions seems to have gone). I have taken comparing pictures, and the ones at ISO800 seems to be clearer than those set at 'Auto'. I've not tried outside 'good' light conditions with this setting yet though.