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Author Topic: Canon 70-200 F2.8L IS Lens Question  (Read 9587 times)

dwdallam

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Canon 70-200 F2.8L IS Lens Question
« Reply #20 on: January 30, 2008, 04:09:00 AM »

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Then perhaps you should save your smartass comments til after you've tried using the 70-200/2.8L IS on a tripod, or at least read the manual for it, or Chuck Westfall's (communications director for Canon USA) postings on the subject, which confirms that the lens will work fine on a triopod with IS active.
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But you know it sometimes does not, Jon, per my posts on this very subject a few weeks ago. It can cause blurry images when on a tripod at longer exposures, but the manual says it should not matter.

Here is the link:
[a href=\"http://luminous-landscape.com/forum/index.php?showtopic=21571&hl=]http://luminous-landscape.com/forum/index....topic=21571&hl=[/url]
« Last Edit: January 30, 2008, 04:13:07 AM by dwdallam »
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Jonathan Wienke

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Canon 70-200 F2.8L IS Lens Question
« Reply #21 on: January 30, 2008, 08:41:15 AM »

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But you know it sometimes does not, Jon, per my posts on this very subject a few weeks ago. It can cause blurry images when on a tripod at longer exposures, but the manual says it should not matter.

I've already addressed that several times in my previous posts, including my reply in that thread. On a tripod, exposures longer than a second or so, IS is bad, because of the "drift" behavior. For exposures faster than 1/8 or so where the "drift" is not a significant, IS offers a clear benefit, especially if there is wind or some other factor that is causing shake visible in the viewfinder when IS is off. For tripod exposures between 1/8 and 1 second, IS may or may not help, depending on how much shake you have on the tripod. It really is that simple.
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