Pentax K-3 II DSLR Wiggles Image Sensor for Better Color

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atheus

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Aug 2, 2010
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"Pentax has upped the image stabilization so that the shifting sensor can achieve 3.5 to 4.5 f-stops — meaning that, in theory, you can now get a sharp photo using a shutter speed that's 4.5 times slower than what you would need if you were shooting without image stabilization."

F stops are logarithmic, so 4 f stops would be 2^4 change in shutter speed - which is 16x faster/slower, not 4x.
 
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