exposure & shutter speed

[petrochemist]

What do you guys think of using light meter apps instead? How reliable are they?

Anyway, since I'm only just starting out, I guess it won't do any harm to have to figure things out for myself for a while, so I can get a better feel for how the theory works in practice.

The free meter App I tried seemed fairly good within normal working range. I don't think it would cope with starlight, but my proper light meter doesn't work below 1 lux either. (Definitely better than sunny 16!)