Has Anyone Determined 300/305 Rolling Shutter Speed? at DVinfo.net

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Canon XF Series HD Camcorders
Canon XF305, XF205 and XF105 (with SDI), Canon XF300, XF200 and XF100 (without SDI).


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Old July 29th, 2010, 12:28 AM   #1
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Has Anyone Determined 300/305 Rolling Shutter Speed?

When the EX1 came out, we were able to find out the scan speed of the rolling shutter by panning quickly at a constant speed on a perfectly vertical line and looking at two consecutive frames and counting pixels. We concluded that the EX1 scans from top to bottom in 1/60 second (compared to RED's 1/72 second at that time).

Has anyone done this with the 300/305?

If not, is there anyone who can do this test? If anyone can post or send two consecutive frames of a quick, steady pan on a vertical line, I can count the pixels. Narrow shutter is preferable at 23.976 or 24p.

I am looking to find out if the Canon is fast enough to use for animation reference and visual effects plates that would roughly temporally match a (global shutter) Sony F35.

Anything faster than 1/120 second would probably be in-spec for me.

Thanks.
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Old July 29th, 2010, 02:19 AM   #2
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It's about the same speed or possibly just a fraction slower than an EX1R. Skew tests I did side by side with an EX1R produced very similar results.
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Old July 29th, 2010, 02:36 AM   #3
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Thanks Alister.

Do you (or does anyone) know how the EX1R compares to the original EX1? Same or faster?

Thanks.
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Old July 29th, 2010, 04:34 PM   #4
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Same for both cameras.
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Old July 29th, 2010, 04:46 PM   #5
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Thanks.

I'm guessing that the Canons are 1/60 as well then. They would have to be at least that in order to achieve 60fps.
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