Using the PixeLink frame rate calculator (, it looks like 1280x1024 with a 36ms exposure should get 13.77 fps with the Global Shutter, 27.32 fps with the Rolling Shutter (Asynch), and 24.81 fps with the Rolling Shutter (ISO). 

I don't know enough to say, but maybe the supplied demo program was using the rolling shutter, and you're using the global shutter in dc/linux?

(When I set to 10bpp, even the Rolling Shutter tops out at 13fps or so, even with an exposure of 0.0001.)


On 7/17/07, Mark Dillavou <> wrote:
On 7/17/07, Aravind Sundaresan <> wrote:
> Hi Mark,
> The formula James mentioned was partly obtained from folks at Pixelink
> and I would be very interested if you got usable images (decent
> shutter speed) at 1280x1024 and 27 fps in Windows. Did you check the
> images that you obtained in Windows and confirm they were captured at
> the above resolutions?

The windows demo program that comes with the cameras calculates the
shutter speed as you change the frame rate.  It claims that the max
shutter speed is 36ms at 27fps.  I can't verify that it is actually
capturing it 27fps (the program claims it is, but doesn't have an fps
counter as it's capturing), but it definitely feels faster than 13fps.


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