Originally posted by SupremeMoFo Being the cynical bastard that I am, (and also in a very bad mood - sorry) - if you'd read the manual...
Personally, I'd rather use M mode than TAv - it'll tell you how under/over exposed the photo will be compared to what it would do anyway so you can adjust accordingly.
I don't think you understand TAv or why we like it. It's not a replacement for M for use by lazy shooters. It is, in fact, the perfect solution to a certain photographic problem - and using M would, well, be stupid. That is why the Pentax engineers included it on the mode dial - while at the same time eliminating the scene modes.
When I'm shooting a basketball game or volleyball game, I'm in gymnasium that is badly lit. The lighting is not great anywhere, but it also varies - there are bright spots on the court and less bright spots and these spots are usually just five or ten feet away from one another. Now, I want the following:
1, as fast a shutter as I can get
2, as low noise as I can get
Of the two, 1 is more important than 2. I draw upon my experience to know what will work for starters. To get the shutter to a satisfactory speed (180s or 250s), in TAv, I open the lens up all the way to f/2.8. I set the shutter to a speed that seems to work most of the time for the particular gym. I then let the camera automatically figure out what's the lowest ISO that will work. Works perfectly.
M in this situation would simply not work - or certainly wouldn't work as well. At a typical game I might shoot 300 pictures. The action is fast and the subjects move around. In a space of five seconds, I might need three different exposures. There simply isn't time to keep adjusting the ISO or the shutter manually.
Will