Re: Camera, XO 1.5 vs XO 1
On Sat, Apr 24, 2010 at 05:43:29PM +0100, Tiago Marques wrote: XO 1 uses 8.2.0(767), that's the latest stable right? Don't think so. When comparing XO-1 and XO-1.5, the version of XO-1 software I use is build 802, version 8.2.1. Ok, will do, thanks. For now it's mostly the darker image that's an issue. It's not that it's bad per se, but the XO1 picture is definitely great. Please check for variance in the two cameras you have by comparing the output of the OpenFirmware test /camera command. See also http://dev.laptop.org/ticket/9853 You could also put your test results in that ticket. -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Camera, XO 1.5 vs XO 1
Hi all, Unsure if this was a side effect of cost cutting or improper calibration, I'm reporting some differences I found between the camera in both models and hope this information is of some use: - XO 1 has slower response time in the video being shown. - XO 1 has a much brighter picture, which results in a much clearer one. Even with good surrounding light, the 1.5 shows a very dark image. - XO 1.5 record isn't saving more than 2s of video. I thought that the camera sensor had been exchanged between revisions but I've just checked and it's the same. What gives? Software? Best regards, Tiago ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Camera, XO 1.5 vs XO 1
Hi Tiago, You don't mention which build you're using, and it's important because we're still making many changes to the camera setup, so please do that in future. - XO 1 has slower response time in the video being shown. I think this is probably http://dev.laptop.org/ticket/10045. The 1.5 setup is capable of producing many more fps from the camera than 1.0, and Record doesn't use a framerate limiter on the preview window, with the result that you see a very high fps on the 1.5 preview window at the cost of so much CPU use that Record becomes unresponsive. Daniel Drake's latest patches to Record add a framerate limiter to its preview window, which will make 1.5 behave more like 1.0. - XO 1 has a much brighter picture, which results in a much clearer one. Even with good surrounding light, the 1.5 shows a very dark image. Don't know about this. We do have some control over brightness/gain in the kernel driver, I think. - XO 1.5 record isn't saving more than 2s of video. http://dev.laptop.org/ticket/10070. Was fixed back in os119, as far as we know. I thought that the camera sensor had been exchanged between revisions but I've just checked and it's the same. What gives? Software? Yes, the sensor's the same, but the hardware and software interfacing to it is different. os121 (about to be released) should be able to record video well, please re-test with that when it's out. - Chris. -- Chris Ball c...@laptop.org One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Camera, XO 1.5 vs XO 1
Hi Chris On Sat, Apr 24, 2010 at 5:18 PM, Chris Ball c...@laptop.org wrote: Hi Tiago, You don't mention which build you're using, and it's important because we're still making many changes to the camera setup, so please do that in future. Sorry about that, it's the latest versions: XO 1 uses 8.2.0(767), that's the latest stable right? XO 1.5 10.2.0 build 120. - XO 1 has slower response time in the video being shown. I think this is probably http://dev http://dev.laptop.org/ticket/10045 * ** Blocked By:** * *Blocking:** * .laptop.org/ticket/10045 http://dev.laptop.org/ticket/10045. The 1.5 setup is capable of producing many more fps from the camera than 1.0, and Record doesn't use a framerate limiter on the preview window, with the result that you see a very high fps on the 1.5 preview window at the cost of so much CPU use that Record becomes unresponsive. Daniel Drake's latest patches to Record add a framerate limiter to its preview window, which will make 1.5 behave more like 1.0. I didn't said it became unresponsive, just that 1.5 was improved(at least from a user's perspective). The high FPS is great, it's a shame that there is never enough disk space to make use of it :) - XO 1 has a much brighter picture, which results in a much clearer one. Even with good surrounding light, the 1.5 shows a very dark image. Don't know about this. We do have some control over brightness/gain in the kernel driver, I think. - XO 1.5 record isn't saving more than 2s of video. http://dev.laptop.org/ticket/10070. Was fixed back in os119, as far as we know. As above, tested in build 120 :| I thought that the camera sensor had been exchanged between revisions but I've just checked and it's the same. What gives? Software? Yes, the sensor's the same, but the hardware and software interfacing to it is different. os121 (about to be released) should be able to record video well, please re-test with that when it's out. Ok, will do, thanks. For now it's mostly the darker image that's an issue. It's not that it's bad per se, but the XO1 picture is definitely great. Best regards, Tiago - Chris. -- Chris Ball c...@laptop.org One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
