Good news for Nikon D800 owners. Mosaic Engineering are currently working on anti-aliasing filter for the camera. Because the sensor line-skips to produce HD video, the custom-designed optical low pass filter should almost eliminate any moire and aliasing on the D800 if it works as well as it did on the Canon 5D Mark II.
The biggest issue with Canon DSLRs is the rainbows – I don’t so much mind the lack of resolving power relative the GH2, sometimes a softer image is more organic and cinematic. Certainly when you project the footage on a big screen and sit back, it looks detailed enough yet organic. Quite unlike on an LCD monitor. The worst thing you can have is an image that isn’t organic but over-sharpened with the bright high contrast jagged lines around every single detail – it’s extremely tiring on the eyes and very DV.