Pentax O-GPS1: The SR Systems of the K-5 and K-r are Different!

http://www.pentax.jp/english/news/2011/201107.html

Look at the summary table of the Astrotracer part, we see that the tracking time when the O-GPS1 is used with a K-5 and a K-r are somehow different:

[ ASTROTRACER Tracking Time (approx. in sec.) ]
K-5

Declination	Focal Length
(°)	200mm	100mm	under 50mm
90	300	300	300
45	160	290	300
0	110	240	300

K-r

Declination	Focal Length
(°)	200mm	100mm	under 50mm
90	300	300	300
45	80	200	300
0	80	170	300

So, it simply hints that the order of magnitude for the allowable movement of the K-5 and K-r SRed sensors are different. Practically, the larger order of magnitude of the K-5's SR system should allow it to make corrections for more hand shake errors and particularly for the use of longer focal length lenses, theoretically and provided that the other parts of the SR (feedback) system can also cope with.

Update (6-8): For more detailed information of the O-GPS1, you can read this product page (Google translated, original in Japanese).




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