[removed redhat list from CC] On Thu, 29 Jan 2009, DongSoo Kim wrote: > Hello. > > When we take pictures, sometimes we don't get satisfied with the > exposure of picture. Too dark or too bright. > > For that reason, we need to bias EV which represents Exposure Value. > > So..if I want to control digital camera module with V4L2 API, which > API should I take for EV control? > > V4L2 document says that V4L2_CID_BRIGHTNESS is for picture brightness, > but it is for "Image properties" and that "image" means the image > frame of TV or PVR things.Am I right? There's also V4L2_CID_EXPOSURE > > If I may, can I use V4L2_CID_BRIGHTNESS for EV control of digital cameras? > > or..otherwise I should make a new API for that functionality. > > I'm little bit confused, because I think the brightness of picture > could differ from exposure value of digital camera..help me ;( Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
