I am looking at a late-model Olympus digital camera and my curiosity is piqued by seeing that, although the camera itself specifies that ISOs of 8000 and higher are extended, neither the technical specifications nor the manual do. B
The tech specs list the ISO setting range as 200 - 25600, plus a low extended setting, but the camera warns the user selecting 8000 (or higher ISOs) that this is an 'extension'.
Please note, I am not asking what extended ISO is. I am wondering why the camera itself, and the technical data, would describe certain ISO settings differently. The camera describes five of the possible ISO settings (which are given as 8000, 12800, etc., as if they were ISO-compliant ISO settings) as 'extended'. However the manufacturer's technical data lists the ISO range as if those were ISO-compliant ISO settings (plus a 'low' extended setting clearly indicated both in camera and in the technical specifications, as being 'approximately 100').
I am very curious, as it seems that the printed information - which potential purchasers might read - is not as complete as one might wish. Could it be that the numbered high extended ISOs are close to standard and most users wouldn't notice issues? Or am I missing something about why the camera would be designed to clearly identify five numbered ISO settings as 'extended' while the technical specifications do not?