one more time canon 100-400 IS

[Keith B]

hello, i just bought my first L series lens, the 100-400mm but i am a bit disapointed about the IS sistem which is garbage.i also have the 70-300mm IS and the IS works amazing,i know is not the same IS but still......i mean i can see it working but the amount of correction is neglijible.is my lens broken or this is how it works?





thank you

I have never had a complaint about mine. It should give you about 2 stops below your normal hand held threshold. I've gotten good results @ 1/80 of second with mine zoomed all the way which is just over 2 stops slower than the 1/focal length rule of thumb.

[adrian mandea]

thank you for the fast reply ,i think is something wrong with mine because it doesn;t work as i was hoping.the 70-300mm IS beats it hands down IS-wise

[neuroanatomist]

1) The 70-300mm has a newer, 3-stop IS system, compared to the 2-stops of the 100-400mm.


2) The 70-300mm is lighter.


3) At maximum zoom, the 100-400mm has a 33% longer focal length.


All of that means the IS on the 70-300mm will be relatively more effective than on the 100-400mm, especially at maximum zoom. But, you can certainly have the 100-400 checked out, just in case...