Image stabilization and tall buildings

[conropl]

Lens-based IS does not and cannot have correction for roll – the lens elements are round, rotating them would not change the image. Only sensor-based IS can correct for roll.

What you say makes sense, and I do not doubt you. I got that from and article I read when I was trying find out how many axis they actually sense, and I admit I did not think about their answer enough to question its accuracy.

Got the information from: http://www.brayebrookobservatory.org...OIS_M%26M.html
Quoting:
"The lens-based OIS designed by Canon initially compensated for pitch & yaw. Their latest OIS can in a few specific lenses also compensate for either roll (limited rotation - angle movement in pitch but also simultaneous side to side), pitch & yaw (Hybrid IS), or pitch, yaw & piston"

Thanks for setting the record straight.

Pat

[neuroanatomist]

Got the information from: http://www.brayebrookobservatory.org...OIS_M%26M.html
Quoting:
"The lens-based OIS designed by Canon initially compensated for pitch & yaw. Their latest OIS can in a few specific lenses also compensate for either roll (limited rotation - angle movement in pitch but also simultaneous side to side), pitch & yaw (Hybrid IS), or pitch, yaw & piston"

Reading over that article, it appears the author misconstrues the functions of Canon's Hybrid IS, or that they simply don't understand what 'roll' actually is...

Quoting:
"During the summer 2009 Canon announced roll compensation in some of its forthcoming mid-range telephoto lenses."

That was the announcement of the EF 100mm f/2.8L Macro IS, and Canon certainly did not say or even imply correction for roll. Hybrid IS adds correction for 'shake' (translational motion in the X and Y directions) to the typical corrections for angular motion (pitch and yaw).

The 5 axes are:



In a nutshell, sensor-based IS can correct up to all five, lens-based IS can correct up to four (excluding #5).