On 02/06/2011 01:59, Bruce Walker wrote:
Well, well. They were clearly reading our little GPS thread ...
"Mounted on the hot shoe of select PENTAX digital SLR cameras,* the
O-GPS1 unit records latitude, longitude, altitude, and universal time
coordinated (UTC) of shooting locations with captured images. Image
files with this GPS data may be used to track shooting locations and
review location data on a personal computing device."
http://goo.gl/qH4o6
They must have hacked the hotshoe interface to handle serial I/O from
the GPS. I suppose the hotshoe already talks to the flash serially, so
they have added the GPS as a serial device distinct from a flash.
Clever! I don't recall any of us coming up with that solution.
The astrotracer function is rather whizzy.
"The O-GPS1offers the advanced PENTAX original Astrotracer function,*
which works with the PENTAX Shake Reduction (SR) system on select
cameras for tracking and photographing celestial bodies. The unit
calculates the movement of stars, planets, and other bodies using the
latitude obtained from GPS data and the camera’s alignment data
(horizontal and vertical inclinations and aspect) obtained from its
magnetic and acceleration sensors. Then, the unit shifts the camera’s
image sensor in synchronization with the movement of the object(s).** As
a result, stars and other bodies are captured as solid points rather
than blurry streaks, even during extended exposures. The unit also
simplifies astrophotography by requiring only a tripod and eliminating
the need for additional accessories such as an equatorial telescope."
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