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Old May 17, 2005, 10:52 PM   #31
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eric s wrote:
NHL, I like your explanation of how the crop factor does effect steadyness. Makes sense to me.

Thanks but it was Bill aka wburychka who offered that explanation. NHL is the anti IS guy.

Have a good one.

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Old May 18, 2005, 12:23 AM   #32
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Two things,

1) I have shot with everything from kodak disk cameras(yes I admit it) to 4*5's and I am still befuddled by this :blah:
But Bill's explanation does make sense.

2) Holy ***, Eric, you need a losmandy or astro-pier for that setup, not a camera tripod. And the image is unexpectedly clear with that combination.

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Old May 18, 2005, 4:08 AM   #33
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eric s

I don't think anyone doubt IS can help @ thoses extremes - 1/4000s f/11? Remember the post starts with IS question around 200/300 which is like at least a magnitude less (and @ f/2.8 ), within the limit of portability, and no one is trying to shut off the daylight either at the max (600 f/5.6)

BTW the Sigma TC also can be stacked, but only in a specific order - the 1.4x can't go in front of the 2x, but works fine behind it...
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