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Old 19-03-2012, 08:21 PM
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skysurfer
Dark sky rules !

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Join Date: Dec 2011
Location: 52N 6E (EU)
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Canon 70-200 2.8L or 100-400 5.6L ?

For my newly purchased 7d I want to buy a telephoto lens preferable a rather bright one.
The 70-200 is brighter but the 100-400 has the same aperture at 400mm (70mm). The latter has a larger zoom range and can even be used as a small 70mm telesope (fit a 1.25" diagonal on the rear end to allow an eyepiece).
I want to use the lens for both astrophotography and 'regular' photography for both moving and still objects.

What are your ideas ?
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