Originally posted by Kunzite you're ... rude. There is no such thing as a "35mm-equivalent base ISO".
I was rude because I tried to avoid the discussion. And I said so. Obviously I failed.
I won't argue with anybody, have better things to do. But I can give you this much:
The "
35mm-equivalent base ISO" (assuming constant sensor tech) is a direct measure of (directly inverse-proportional to) the total amount of light a camera can capture at most before it clips. Call it its inverse light capacity, if you prefer. Equivalent base iso may be less understood than equivalent iso which in turn may be less understood than equivalent focal length. But things one doesn't understand do sometimes still exist ...
I think it is a rather helpful tool to understand camera performance (i.e., how clean images can become) and I invite everybody to familiarize with the concept sooner than later. Thanks and Happy Late XMas
P.S. cameras like the RX100 have 35mm-equivalent base ISO 600. IMHO, this is their weakest point when used in daylight. With better communication, there would be more pressure on vendors to release more capable cameras in a small form factor, including their ability to capture clean images. Therefore, the point I am making here may be less academic than it may appear to some.
Last edited by falconeye; 12-27-2015 at 05:22 PM.