Here are some approximate figures to use as a
starting point. These figures where populated with a Canon 7d
equipped with an extended battery grip and 15mm lens.
Using these figures should get you close to the reported
result but you may need to adjust the motor off time to adjust movement over
time to your exact expected result.
Being the load on the pan always remains the same you will
find very little variation once you have established the common result to your
unit. A few tips.
1. Try to get your camera as close to perfect center of gravity that is balance up and
down as well as forward to back.
2. Always leave your 'Motor on' time
to ".05" and your 'Motor Speed' to "50" and make your distance over time
adjustments by lengthening or shortening the 'Motor Off' time.
PAN: Keep 'Motor On' to ".05" & 'Motor Speed' to "50" and run your
cycles to cover the time you want the TL to take (i.e. If you want a 60 min TL, run
the cycles up to a number that the Oracle says will last 60 min).
degrees of movement over | time period / motor off time (mo=motor off)
22.5 degrees over | 30min/mo
4sec | 1hr/ mo 8sec | 2hr/ mo 16sec | 4hr/ mo 32sec
45 degrees over
| 30min/mo 2sec | 1hr/ mo
4sec | 2hr/ mo 8sec | 4hr/ mo 16sec
90 degrees over
| 30min/mo 1sec | 1hr/ mo
2sec | 2hr/ mo 4sec | 4hr/
mo 8sec
180 degrees over
| 30min/mo
.5sec | 1hr/ mo 1sec | 2hr/ mo 2sec | 4hr/ mo 4sec
TILT: Keep 'Motor On' to ".05" & 'Motor Speed' to "50" and run your
cycles to cover the time you want the TL to take (i.e. If you want a 60 min TL, run
the cycles up to a number that the Oracle says will last 60 min).
These
figures where populated with an Canon 7d equipped with a extended battery grip
and 15mm lens. This camera set up is approximately 50% below center of
gravity so if you where to have the camera raised to be on perfect center of
gravity you will use the same figures as the pan above.
degrees of movement over | time period / motor off time (mo=motor off)
22.5 degrees over
| 30min/mo
2sec | 1hr/ mo 4sec | 2hr/ mo 8sec | 4hr/ mo 16sec
45 degrees over
| 30min/mo 1sec | 1hr/ mo
2sec | 2hr/ mo
4sec | 4hr/ mo
8sec
90 degrees over
| 30min/mo .5sec | 1hr/ mo
1sec | 2hr/ mo 2sec | 4hr/ mo 4sec
180 degrees over
| 30min/mo
.25sec | 1hr/ mo .5sec | 2hr/ mo 1sec | 4hr/ mo 2sec
Once you have tried one of these settings it is a good idea
to write down your result if it is different than what the chart has stated so
you can adjust or repeat this move next time.
You may also tweak the Motor Speed settings to fine tune the results.
For example if your 'Motor Speed' is "50" and you expect your move to
go 90 degrees over a period, and it actually goes 95 degrees you can
reduce the 'Motor Speed' to say "45", so each movement is slightly
slower. We do not recommend setting the Motor Speed over "50" when
using long exposures.
Be sure to post your results or ask questions in our ORACLE / Revolution Head / elektraDRIVE group on Vimeo .