lookaround360@xxxxxxxxxxxxxxxxx wrote:
The mercury switch level looks promising. I'd like it to chirp but an
LED might be better since I'd have my eye on the camera and ambient
noise can mask the sound. I've noticed that with digicam intervalometer
feature. I'm thinking two mercury switches cross-wise so that both would
have to be closed to complete the circuit.
An audible level shouldn't just be yes/no, though; it should tell how
far off you are. Something like the tone altering as you get closer and
closer (I originally thought of volume dropping, you look for the
minimum, but that's likely to be too affected by ambient noise). Maybe
shutting off *right* in the middle, but that could also be the highest
tone, with the tone going down the further you are off in either
direction.
(Or, for people with perfect pitch, you could go *up* in one direction
and *down* in the other, so you'd know for sure which way you were off;
but the market for photographers with perfect pitch might be small :-)
and besides we can tell which way we're off usually once we're reminded.)
--
David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/
Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/
Photos: http://dd-b.net/photography/gallery/
Dragaera: http://dragaera.info
