17-50 2.8 Sigma O.S. working at DVinfo.net

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Sony XDCAM PMW-F3 CineAlta
HD recording with a Super35 CMOS Sensor.


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Old June 1st, 2011, 09:38 AM   #1
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17-50 2.8 Sigma O.S. working

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
(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
Matteo Ricchetti is offline   Reply With Quote
Old June 1st, 2011, 11:55 AM   #2
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Re: 17-50 2.8 Sigma O.S. working

Very nice work. I'm impressed. Hopefully this turns into something we ALL can use asap!
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Old June 2nd, 2011, 04:17 AM   #3
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Re: 17-50 2.8 Sigma O.S. working

I am thinking a way to share...
thanks
Matteo
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Old June 5th, 2011, 03:43 PM   #4
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Re: 17-50 2.8 Sigma O.S. working

now that is very cool! very nice work on the reverse engineering. this could be quite useful in the cinematography world
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Old June 9th, 2011, 12:45 PM   #5
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Re: 17-50 2.8 Sigma O.S. working

Very cool. What mount do you use with the Sigma?
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Old June 10th, 2011, 02:07 PM   #6
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Re: 17-50 2.8 Sigma O.S. working

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
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