well, don't expect it to be *so* sensitive, you usually have to overexpose a lot (5/6 steps, but YMMV) from what the meter says _with the filter on_ (which already *eats* all the light) I have no digital pentax-es, but with my DSRL (enemy-branded), in a sunny day, the tipical exposure, at 100 Iso should be f/8 10-15 secs. not joking sometimes I have to boost up the ISO just to keep the time below the 30 secs camera limit (when the sun is not so present).
of course I usually boost up the ISO, at least 400 / 800. even so, times will be atound 2/4 seconds... After 800 you are going to have a lot of grains, which, in an IR shot, may be welcome. btw, I usually use this post-processing workflow - open up your preferred image editor (for a war on this question, and other computer related things, please go to the right threads) - split the image into the three channel (RBG) - use just the GREEN one (and this is one point I suppose change between cameras) - adjust it, tipically adding contrast/brightness and levelling it cutting out all the "non-exposed" part of the histogram (if it makes any sense) I've tried to use curves instead of levels+contrast/brightness (which I prefer for color images, curves, that is), but the results were very similiar, except that it was more painfull with curves. danilo
