So, if I understand it well Carl, the same stock lens will produce less white shading on an HD200-250 image than an HD100 ?

If its right it's a cool tool because as Tim said, some clips downloaded has really bad white (magenta) shading.

With the GY-HD200U or GY-HD250 and the entry-level 16X lens, if you had any white shading issues, the camera allows you to adjust it out. This is one of the many quality and feature upgrades with the 200 series cameras, thus the higher price points.

Regards,