Originally posted by janosh I've been curious about TAv...why do you use it and why set at 100-4500...
...in other words, what kind of photo situations are you dealing with this way?
Taking photos of rugby.
I know what my minimum shutter speed I want is.
I know what minimum aperture I want.
So I set, say 1/500 at f4.5, and let the camera figure out what ISO to use (it's faster than me at that). As conditions can change from second to second (clouds scuttling across the sky etc.) I need something on auto!
With a 3pm kick-off the game finishes at around 4:30pm. In winter, on a dark wet day, it can be very dark by the end of the game. By then I usually would have dialled back the shutter speed to 1/350 or even 1/250, and the aperture to f2.8, but the ISO will still be high.
Why ISO4500? Because it's better than no picture at all.
It's good because I have control over the things that really matter and let the camera do the rest. (I also dial in -0.5 exposure compensation, just seems to need it)