question about the SAF,contax g2

[tranvutuan]

According to the instruction of the manual, if you are in SAF mode with Single Frame shooting, holding a focus lock or depressed halfway of shutter release will lock the focus at that distance. However, I have just tried it and currently, focus is locked at distance = 1.32m and shutter speed = 800 and aperture = 2 ( using Planar 2/45 ), then I move the camera either to the left or right, I notice that the shutter speed is changing as well. That is why I am confusing.
Any ideas about this ?

 

[Bob Michaels]

The AF lock button only locks the focus. It does not lock the exposure just as you are seeing. It does exactly what it supposed to do and nothing else.