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Forum: General Photography
04-12-2016, 08:29 AM
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As far as I know the existing bodies other than the K1 use simple 3 axis motion detection and correction and do not monitor and attempt to correct for 5. The roll type movements are the ones excluded if I am correct. Also pointing a Pentax straight up or down tends to cause SR to alert you so I assume that in these orientations there is limited capability to detect motion.
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Forum: General Photography
04-12-2016, 06:59 AM
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I'm very familiar with 6 degrees of freedom since I shoot rockets for a hobby. The really big one's require a 6DOF analysis to be submitted to the federal government before launch.
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Forum: General Photography
04-11-2016, 01:59 PM
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Does Pentax claim 5 axis IS for any body other than the K-1?
---------- Post added 04-11-16 at 05:00 PM ----------
I think this is accurate - but the dang marketing slides always make it seem otherwise. It makes no sense to work as described on the marketing slides and that video tricked me a little. I'm pretty sure that sensor isn't tilting now that I look again but...
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Forum: General Photography
04-11-2016, 01:35 PM
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Honestly these are marketing slides and they describe the direction the camera can move and the sensor will compensate for - they don't clearly articulate HOW this is accomplished. And you are correct that 5 way is supposed to work with or without OIS - it's unclear if this is tilting the sensor or doing something else to compensate.
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Forum: General Photography
04-11-2016, 01:08 PM
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Assuming this is accurate - how does this avoid causing more problems than it solves? Tilting the camera doesn't change the lens / sensor orientation to one another and motion in that direction should change the focus across the plane of the sensor.
This is different than the Sony system or even the Panasonic system which can combine optical and in body IS together. The Oly systems are pure in body only.
---------- Post added 04-11-16 at 04:12 PM ----------
That could be true. I'm not sure since I don't know quite how the microlenses on the front of the sensor behave - are they flat mirror reflectors or are they more curved? I'm not clear on this. I also see other lights that seem to come and go which implies a shift in the plane of the sensor picking up other reflections.
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Forum: General Photography
04-11-2016, 11:23 AM
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A few learned folks on this forum have asserted in the past that the five axis stabilization used by various manufacturers only compensates by moving the sensor in a plane perpendicular to the light path - and that no tilting of the plane of the sensor occurs.
That made sense to me. The rationale being that any tilt would take part of the image out of focus - but... then I watched this video and it seems pretty clear to me that tilting is happening.
A close-up of Olympus’ 5-axis image stabilization system
Can someone help me understand this? I'm trying to figure out how the sensor can be tilted away from the normal plane and not negatively impact focus.
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