I use a PL-A742 camera with a Linux Ubuntu workstation and libdc1394
driver. I use Coriander appli and I capture 1280x1024 images in format7.
I only get good images (bright enough) at 7fps whereas the camera
specification indicates 27fps@...
I have the same problem as the one specified in "[libdc1394-devel]
pixelink PL-A742 framerate" thread.
Did somebody finally manage to reach 27fps with libdc1394?
I have a PL-A741, which is the grayscale version of the PL-A742. I
also have experienced exactly the same problem with the CMU drivers
for Windows, with libdc, and with Mac OSX. As of yet have not heard
from Pixelink, even though I put in a support request weeks ago.
According to their webpage,
A741 and A742 only have global shutters.
So what's up? Have we been fibbed to when we bought the camera? Or is
there something else we don't understand about the DCAM spec?
Not refreshingly new nor different
From: David Moore <dcm@MIT.EDU> - 2007-11-29 01:49:42
On Wed, 2007-11-28 at 17:19 +0100, Kenn Sebesta wrote:
> So what's up? Have we been fibbed to when we bought the camera? Or is
> there something else we don't understand about the DCAM spec?
Yes, you've basically been fibbed to. It's a limitation of the image
sensor, so Pixelink can't really do anything about it.
You can read the sensor data sheet here:
Page 14 has the equation for computing what the frame rate will be for a
given shutter time.