4 hours x 60 mins/hr x 60 secs/min = 14,400 secs
exposure to ensure that I can use short intervals.
To get the interval setting, we divide the even duration
by the number of frames:
14,400 secs / 5,400 frames = 3 secs/frame
(the interval is set to 00:00:03)
You'll need to test your camera to find its minimum
interval. In auto mode, mine takes about two seconds so
the three-second setting should be okay. What I would
probably do is set the camera to manual focus and
I was really happy to be able to fit this project into
the SX28 — honestly, I wasn't sure I would be able to
in the beginning. As it stands, the program uses about
75% of the code space so there is some room for new
features. One of the ideas John suggested was a "pre-light"
output. The idea is that we could enable the secondary
output (on RA. 3) before the shot is taken. This would be
used to turn on lighting and allow it to warm up. Those
that want to do time-lapse video
of plant growth in a controlled
environment would use this. I know
what the feature is but haven't
wrapped my head around
implementing it yet so, for now I
have left it on my to-do list.
Chances are that my next
version will be on an SX48 or even
the Propeller; with the code space,
a lot of new features — like those in
Mr. DeMeyer's project — could be
added, and the additional I/O
means that the LCD could use an
eight-bit bus which simplifies the
interface. With more code space
and I/O, the thought of adding
steppers to move the camera
between shots is appealing, as well.
Hmmm … I'm going to need to
think about that one for a while.
Until next time, Happy Stamping,
Nuts & Volts,