On: Mon, 8 Mar 2004 Bob Marchant wrote:- > "Dynamic range is an analogue limitation of the sensor. However a wider > dynamic range requires more bits to describe it adequately, producing > smooth tonal gradations".
.......bringing us to chords, the simplest being composed of 3 notes analogous with shadows, midtones and highlights - or rock and roll. Hit the chord and you get harmonics, hit the chord again and harmonics intereact with harmonics producing yet more harmonics. My very own 'toy piano' is the infamous Canon PowerShot A40 with a 2meg sensor, a 24bit depth, and a very nice flava of sRGB. If I keep on hitting the button while varying the exposures, I can (after compositing) produce a very worthwhile image comparable with bigger toys. I could even argue that the A40 has in effect a 96bit depth - or more! More to the point, the weakest link is the performance of analog to digital converters as inhibited by onboard processor clock speed. They are simply not fast enough, and cooled peltier chips are not necessarily the answer for handheld digital capture either. I want 48x multisampling (and) more at source - please:) Back to Bob's piano analogy.....the piano is the most difficult of all instruments to mike up and record. Playback through the best of sound systems will NOT give the impression of the piano being in the same room. The only known recording medium capable of this......is the entirely mechanical wax cylinder recorder....which is totally analog to analog with zilch blurring of notes, and a sonic presence which makes the ear wince in delight. 16bits is not enough, and enough is never enough <G> William Curwen http://www.william.ws =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
