kuririkura
Yeah, after I try to figure out the problem is sometimes Auto ISO react slower than light changing, half shutter to other object fix it, by the way is there any way to limit Auto ISO mode on M? since sometimes I might prefer underexposed than noised 😀
In Av mode, there are no limits to the shutter speed (other than the physical limits imposed by the mechanics in the camera); in Tv mode, there are no limits to the aperture (other than the physical limits imposed by the lens). Thus, for consistency, M + AutoISO should not have limits to the ISO value, other than those imposed by the camera.
If you want to underexposed your pictures, why don't you just play with the exposure compensation? And I hope you are not trying to underexpose and then correct during post-processing: that technique produces far more noise than exposing correctly, even if you need a higher ISO.
You see, I
could do that, but I am not convinced that I
should do it; but I may be wrong, of course...
kuririkura
PS: funny things also happen.. I do not know what I have done, but once in "M" mode and I press half shutter, and move around the object, the shutter speed is automatically changed!(in M mode.. wow) i'll update when i already can pointed the exact bug condition
Yes, please report back: AutoISO should never change any value other than ISO. I'll have a look at the code, and try to reproduce it myself.
kuririkura
one more thing, on AV mode + Auto ISO, when I press AE lock button, the shutter speed is locked too?
I should: AutoISO only changes ISO values, not shutter speeds; if the camera does not change shutter speeds, neither do we.
