Can someone explain the difference between Motion Enhancer, Motion Naturalizer and Cinemamotion? Are the Motion Enh. Naturalizers the two that are unique to Sony only? And what they are supposed to do.
Aren't most setting the "motion enhancer" to "Standard".
Lastly, the detail enhancer.. i thought i read somewhere that this made the image look better? Noone seems to leave it on in this thread.
I'll take a stab at it, but I am by no means an expert, so feel free to correct me if I'm wrong
Most of the settings you mentioned seem to be proprietary to Sony and are various algorithms to "improve" picture quality. In my personal experience, most of the bell-and-whistle type settings only help in certain special circumstances, and can often times cause problems as some have already seen in the form of flickering. That being said, here is my very basic understanding.
Cinemotion should handle the varying cadences present in DVD video, such as a 3:2 pulldown to take 24 fps source material to 29.97 fps. This is how a normal 60 Hz tv would display 24 fps source material. I'm not sure exactly how the 120 Hz A3000 handles it, but it would seem simply enough to display every frame twice instead of once since the refresh rate is twice as fast.
As for the rest of the settings, we may never know exactly what they do unless Sony is willing to tell us. I think most people assume that the Motion enhancer and Motion Naturalizer do something with the extra frames (due to the TV being 120 Hz and source being 60 Hz) such as insert a black frame every so often, or maybe interpolate frames to make the scene appear more fluid.
As for the Detail and Edge Enhancer, I would guess they are specialized algorithms similar to the Sharpness setting, but probably better at what they do and specialized to certain areas of the picture (hence their names).
I personally leave all the bells and whistles turned off, although I have not noticed any negative effect from having Motion Enhancer set to standard. I have not yet run across any material where I can see a real difference between the Motion Enhancer turned off vs. standard, but I'm sure it does make a difference on some video. I haven't tried the Edge or Detail enhancer, mainly because the picture looks pretty sharp already and, if they are similar to Sharpness, they could introduce artifacts if they are turned up too high. I'll try to mess around with them and see if I can tell any difference.
Again, all of this may be wrong. It would be great if someone knew exactly what these settings were doing because we could use them much more effectively.