topic Re: Article about IS in General Discussion

Article about IS

kvbarkley — Wed, 30 Jan 2019 20:21:07 GMT

Lens rentals has an article about IS.

https://www.lensrentals.com/blog/2019/01/how-image-stabilization-works-in-camera-and-in-lens/

(If the link gets scrubbed google "LensRentals Image Stabilization"

Nothing really new except for this:

"Olympus seems to think the limit is 6.5 stops of image stabilization. In a recent interview, Setsuya Kataoka, part of the Imaging Product Development Division at Olympus, claimed that image stabilization’s theoretical limit is set at 6.5 stops of stabilization, due to rotation of the earth interfering with gyro sensors. I’ll let the comments below determine if that is a scientific fact, or just marketing mumbo jumbo."

IS is subject to coriolis!

Re: Article about IS

Waddizzle — Thu, 31 Jan 2019 02:32:15 GMT

It is mumbo jumbo.

How do they compensate for the effect behaving differently on different parts of the globe, northern and Southern Hemispheres. At the equator, there effect disappears, and gets stronger the further you move away from it..

Re: Article about IS

ebiggs1 — Thu, 31 Jan 2019 16:13:51 GMT

I heard an explanation of IS as a comparison to a car traveling at 60mph for 5 minutes, it is easy to figure you will be about 5 miles from where you started. Yeah, you might be off a little bit because you may be moving at 59 or 61 mph, but where you end up is easily in walking distance of your predicted location. Not too bad! But, if you try to predict where the car will be after an hour instead of 5 minutes, that same small 1 mph error will magnify over that longer time period, and you'll end up a full mile off. Can you live with or are you OK with that big of an error ?

Same with IS. The more you ask it to do the less effective it gets. It works very well at a 1 stop helper but when you get to 3 or 4 stops it works less because of tiny miscues in the electronics and motors and I guess the Earth's rotation.

"...image stabilization’s theoretical limit is set at 6.5 stops ..."

Theory's are great until they are proved to be wrong. Just ask any astronomer or NASA.

Re: Article about IS

Joel4JC — Thu, 31 Jan 2019 20:19:13 GMT

Wow, if you are not using a super telephoto lens and are shooting beyond this "6.5 stop theoretical limit", there must be one heck of a reason the camera is not on a tripod and the image you are capturing must be to die for

Sometimes theory and reality are in two different universes.