Archived posting to the Leica Users Group, 2009/01/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Wee-el I did mention it. But this is a startling claim you have made! A sensor is a linear device. All of the voodoo is after the buckets fill up with photons! I shall say no more, for I fear that Dr Theodore may jump on me for being too geeky. Sheesh, Hoppy should be out taking photos! Cheers Geoff http://www.pbase.com/hoppyman/e http://gallery.leica-users.org/v/gh/ Pick up your camera and make the best photo you can. -----Original Message----- Subject: Re: [Leica] Question about M8 exposure Geoff, a major factor that you have not discussed is that digital sensors are not linear device - that is, a sensor may have better response in certain range (e.g. midtone) than others. The conversion from this "native" characteristics of the sensor to the "RAW" output, is one of the secret sauces of the camera maker. On Thu, Jan 15, 2009 at 12:59 PM, Geoff Hopkinson <hoppyman@bigpond.net.au>wrote: > Steve I think that there are several issues confused there. The > original linear information captured must be conform to the fundamental principle. > Half of total are used the represent the first (brightest) stop, one > quarter the next, one eighth the next, one sixteenth the next etc. Up > to a reported > 81/2 stops of maximum dynamic range for the DNG. > > -- // richard m: richard @imagecraft.com // b: http://rfman.wordpress.com _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information