image stabilization 500mm f4 IS II

[madencbm]

How do I tell if IS is working on my 500mm f4 IS II.  I cannot hear any sound from the lens when IS is turned on.  I have tried using live view while hand holding to see if image stabilizes shaking but nothing happens.

Thanks in advance.

[ebiggs1]

"You can never see shake and stop on Canon L lenses IS...if you can see it, something is wrong."

Absolutely correct.  The ef 500mm f4L is an amazing lens.  I would bet you the IS is working just fine.  Unless it is a used lens and was severely abused.  Which is hard to do I might add.

BTW, my Siggy 150-600mm pair and the Tamron 150-600mm don't jump any real noticeable amount either.  The Sigma S is also very quiet and very quick to AF.  Two of the three Sigma 150-500mm lenses I had jumped so bad it would jump a hummingbird clear out of the frame.  The third one, which I currently still have, is fine.

[kvbarkley]

Maybe I am a nervous nellie, but with my EF 70-300 and Tamron 150-600 it is really obvious when the IS starts working when I press the shutter half way. There is no jump, but the image definitely stabilizes.

I can't speak for L lenses.

[Waddizzle]

"I can't speak for L lenses.L 

I can.  La-La-Love it.   

The first thing I noticed about my EF 24-105 f/4L [EDIT:  my first "L"] was the lack of CA, like purple/green fringing, and most particularly when the lenses are slightly out of focus, as in "soft focus".  I have a Rokinon 85mm T1.5 Cine Lens that shows fringing when it is just slightly out of focus, which all but disappears when you nail the focus. 

My T5 kit lens, the EF 70-300mm, shows fringing at any focus.  In fact, it only gets worse when you soft focus. Fringing comes from different light frequencies being bent at different angles.  When the different frequencies are aligned, the image is focused.  Some lenses seemingly do not align the light frequencies when the lens is defocused slightly, as well as they would when the lens is focused.

But, my "L" lenses have never shown any sort of CA yet, not at any focus setting.

[kvbarkley]

Nice, but this has nothing to do with the OP.

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@Waddizzle wrote:

"I can't speak for L lenses.L 

I can.  La-La-Love it.   

But, my "L" lenses have never shown any sort of CA yet, not at any focus setting.

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