This is the first experiment of 17-50 2.8 with the O.S working.
My reverse engineering of the Canon EF protocol is reaching the end.
these first takes with and without the Optical Stabilizer Untitled on Vimeo (you can hear the click of the switch on the lens).
Next step will be a follow focus (I found the code to move the focus motor as well).
The lens is pretty good and match well the sensor.
here some pics:
http://www.eidomedia.com/F3/f3_si_1.jpg
http://www.eidomedia.com/F3/f3_si_2.jpg
http://www.eidomedia.com/F3/f3_si_3.jpg
http://www.eidomedia.com/F3/f3_si_4.jpg
http://www.eidomedia.com/F3/f3_si_6.jpg

Very nice work. I'm impressed. Hopefully this turns into something we ALL can use asap!

I am thinking a way to share...
thanks
Matteo

now that is very cool! very nice work on the reverse engineering. this could be quite useful in the cinematography world

Very cool. What mount do you use with the Sigma?

Canon EF.
For the F3 side I made the flange on the lathe (BTW using an old U-matic BVU upper drum) and for the lens side I have used an EF estension tube.

Matteo