yeah, all slrs should have bulb setting, where u can leave the
shutter open for as long as u want, provided u got enuff battery.
for those full manual mechanical cams (requiring no batts), yeah it
can be up FOREVER... literally. ahhahahha..
so i just use a cable release to lock the shutter down, argar argar
the timing with my watch and close the shutter after that. the blue
sky is becos it's like the sun making the sky blue, except the moon
is producing much much less light than the sun, hence needing a
long exposure. however the long exposure captures the movement of
the clouds, which i guess forms the impact for this image.
