What is "the best choice" for the luminance level range for displaying zebra pattern in this camera?
One can specify the upper limit (top) and lower limit (btm) of the luminance level range.
The default range is 70 % to 80 %.
I miss the help of the histogram in this camera ...

A guide to JVC's GY-HM100 camcorders - Part eleven of thirteen - YouTube (http://www.youtube.com/watch?v=PmbeXXjw90I&feature=related)

maybe this helps

@Andrew

Thank you very much for the link.
So 70%-95% would be a good setting. As he explains, it is matter of experience to select a good setting.
I will experiment with it.