Jag citerar Gary Friedman The Compolete Guide to Sony's Alpha700 Digital SLR Camera and the Alpha Mount System, sid 141:
“Why can’t I have ISO 100 as part of my Auto ISO range?”: Every other Alpha-mount camera had an Auto ISO function and it included ISO 100. Why not the A700? The short answer is that this CMOS sensor actually has a native speed of ISO 200. Technically, it can’t be less sensitive than this. When you set the camera to ISO 100, the system simply pays less attention to the signal (resulting in slightly less dynamic range!) to simulate the lower value. If you want proof, have another look at the ISO test shots from a few pages ago and notice that the noise level for ISO 100 and 200 are identical. Thus, unless you need the slow speed for technical work (like shooting waterfalls – see Appendix B), there’s actually little benefit to using ISO 100. (Still, the engineers could have included it with no negative side effect… It would have saved me the trouble of writing this!).
Andra artiklar på nätet talar om samma sak, tekniskt generaliserbart - CCD: konstruktions- ( bas- ) ISO = 100, resp CMOS = 200. Jag har svårt att göra annan tolkning av detta.
Antingen är Gary Friedman ute och reser, eller så är Din lista Kristoffer inte korrekt. Jag tänker inte döma i det målet, utan nöjer mig med notera diskrepansen.