| Edmond Rodriguez on 1 Feb 2011 16:09:46 -0800 |
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| Re: [PLUG] Web Cam Recommendation |
Do you really mean iris? Perhaps you are talking about "exposure". Some cameras have exposure times that can vary and an "auto exposure" feature will control that (as well as other settings). This will also effect the frame rate, since a longer exposure time reduces the frame rate of the camera. I have purchased two cheap cameras. One I helped with in the release of the driver, (dual camera), and it could vary the exposure time (v4l2ucp lets you change it). The other camera does not have an exposure setting, but I am wondering if maybe it is internal to the camera, hard to tell. Do web cams actually come with an iris that can change? I wouldn't be surprised! On Tue, Feb 1, 2011 at 4:14 PM, Randall A Sindlinger <rsindlin+plug@seas.upenn.edu> wrote: > Does anyone know of any that you can disable the auto-iris on? > > For playing around with image recognition, (especially for color), > I've found it very annoying that the webcams try to "help" you. > Yellow especially can end up washing out to white if the iris opens > up, or turning towards orange if it clamps down. > > -Randall > > On Sun, Jan 30, 2011 at 07:02:51PM -0500, Casey Bralla wrote: >> Anybody want to recommend a decent web cam? It seems all the cheap ones that >> I have bought over the years (or even some not so cheap) either aren't very >> compatible, or are just pretty crummy. >> >> Anybody have one they like? >> -- >> >> Casey Bralla >> Chief Nerd in Residence >> The NerdWorld Organisation >> http://www.NerdWorld.org >> ___________________________________________________________________________ >> Philadelphia Linux Users Group -- http://www.phillylinux.org >> Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce >> General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug >> > ___________________________________________________________________________ > Philadelphia Linux Users Group -- http://www.phillylinux.org > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug > ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug