Can anyone provide definitive information or point me to authoritative sources that will answer the following questions. Background:
C. Fn 1-8 Safety Shift settings
1 Enable (Tv/Av) Yes
2 Enable (ISO speed)
"Enable ISO speed safety shift works in the Program mode, shutter-priority mode, and aperture-priority modes. When the subject’s brightness changes erratically and the correct auto exposure cannot be obtained, the camera will change the ISO speed automatically to obtain a correct exposure."
Disable Safety Shift.
Q1. C Fn. 1-8: 0; Tv, Auto ISO. What ISO is picked by the camera if metered aperture is within its limits? I.e., what is the relationship between aperture and ISO?
Q2. C Fn. 1-8: 0; Tv, Auto ISO. What ISO is picked by the camera if the metered aperture is at its minimum or maximum? I.e., what is the relationship between aperture and ISO?
Q3. What is the relationship between C Fn. 1-8: 2 (Safety Shift ISO speed enabled) and Auto ISO?
Q4. With Manual Shooting Mode and Auto ISO the ISO level with be set according to the metering. How does one achieve exposure change as measured by metering other than by turning off Auto ISO and adjusting exposure manually?
Q5. What is the relationship between Auto ISO and C Fn. 1-8: 2?