Batman/Sakura 6-piece Gray Tone Marker Demo

Here is a quick time lapse video put together by the fine folks at Sakura of me putting their Koi 6-piece gray tone brush pen set to the test over a quick Batman head sketch (that was a long sentence):  

The 6 tones here cover the whole range from dark to light, and glide very smoothly over bristol board.  There's even a Koi blender marker that they offer to mix the tones a bit better.  I recommend picking up this set (or their other fine products, like my favorite Pigma Micron pens!) at your local art store! :)

Thanks to Robb for filming, and to Leslie for editing!