If you want to print your images via offset print with 300 dpi 0,006 is totaly fine.
but i am guessing you dont want to print your videos ;-) these values are based on the 35 mm film, crop factor and printing resolution.
but you are not printing your videos, you dont need to scale it for 300 dpi. 1 pixel in your video is 1 pixel on your monitor.
none of these calculation is actually with the sensor size and unit density.
lets break this down to the basics:
we dont want blur. tuning the camera to hyperfocal distance means max. sharpness.
as your coc gets bigger you will have more blur, smaller coc less blur.
let me quote dofmaster here:
"Note that the circle of confusion is subjective. Thus, some people use 0.025 mm as the circle of confusion for 35mm format, while others will use 0.030 mm.
There isn't a "correct" value."
But we know that the coc cant be smaller than 2 times the unit size of the sensor.
this is something you cant define for film (subjective per person). but for digital sensors we can say that the smalles possible coc is 2*unit size.
for the hyperfocal distance and ONLY for this distance the smalles possible coc value is the best choice.
0.006 or even 0.009 is fine (and your personal choice) but it is not the hyperfocal distance you will get.
you will get a blurry background with those values but your image might look good as the foreground improves.
if you really want to see it for yourself just focus the lens on a moire pattern or focus tester
(i really like
http://www.traumflieger.de/desktop/fokusdetektor/fokusdetektor.php) with both distances (55 cm and 120 cm).
take a picture outside and post the same 100% crop here. i am not going to unglue with camera just to prove a point
because my focus is really ****ing fantastic.