> For the "digitally-challenged" amongst us (me!) how does this work? The
ISO
> settings business that is.
> What's the downside here in going from a low to a high ISO setting in
digital?
think of ISO as being gain.  with increased gain comes an increased
sensitivity and an increased noise.

> The cameras don't really need shutter speeds or ISO's but they work with
>.them for ease of use for photographers, and so you'll still be able to use
> your handheld lightmeters.
eh?  i agree about the ISO, but the D30 has a focal plane shutter, so of
course it requires a shutter speed.

> Which are (approximately) the shutter speeds that began to suffer from
noise?
depends on the ISO setting.  but typically greater than 1sec.  the D30 has a
noise reduction feature and this does work.

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