I agree with all that you say, Chuck, but you should be able to catch the ship
at its point of least movement in every cycle of pitch and roll; there are
normally pauses in a ship’s movement.
But then you wouldn’t catch me (far) this side of a coffin going on a cruise .
. . although I have heard good things about cruises off Alaska and Norway.
Chris
> On 17 Aug 15, at 11:49, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>
> When using old rules of thumb like... shutter speed should be as fast as the
> reciprocal of focal length... I think you should count the focal length as
> 600mm. Then, using the sunny 16 rule and ISO 800 gives 1/800 second at f/16.
> But if you open wide to (let's call it f/8 rather than f/6.7) you can shoot
> at 1/3200 which is faster than you need even without IBIS.
>
> I'm not sure that the sunny 16 rule is fully correct for high latitudes like
> Alaska. But, even if you lose a stop due to atmospheric attenuation, you've
> got plenty of leeway. Even if you lose two stops to cloudy skies you've got
> the IBIS to compensate and the ISO dial if all else fails.
>
> ps: A rolling/pitching ship is not exactly a stable platform for a tripod.
> Leave it home.
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|