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An over fertile imagination perhaps, all about the D400...

Jim Pearce

Grimsby, CA
4397 posts

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"I really don't see the relevance of this discussion Neil..."

Jim Pearce Silver Member Nikonian since 02nd Mar 2004
Tue 15-May-12 07:26 PM | edited Tue 15-May-12 11:40 PM by Jim Pearce

We both know very well that the 500 f4 AF-S plus TC-14E provides adequate magnification for warblers on a DX body; and what's more they don't provide so much magnification that you can't generally fit the warbler in the frame at MFD. But yes, I do indeed shoot songbirds at some venues like Pelee where backing up is a problem, and where Gerard has had better luck with certain species using a 300 f2.8 VR and TC-17E because I couldn't back up fast enough or far enough on the narrow path.

But to get to the point, my claim is that fitting the bird in the frame is a function of lens (and teleconverter) choice and whether the camera is FX or DX. FX has no advantage here; the advantage comes in having a higher density sensor that allows you to use less lens and crop.

Now as to your factual errors:
1. According to Cambridge in Colour's calculator, diffraction limits the system somewhere between f/11 and f/16 on a 24 MP 1.5x sensor. Of course, this depends on print sizes and viewing distances. Such a camera would be diffraction limited at f8 given 16" x 24" prints viewed from 10" away.
2. In truth, both the MFD and magnification for the 500 f4 AF-S and AF-S II are identical; the maginification is 1:8.2 (autofocus). Nikon simply corrected the spec when they introduced the AF-S II. You can verify this yourself.

Jim

Visit my Nikonians gallery.

This is a hot, active topic! An over fertile imagination perhaps, all about the D400... [View all] , richardd300 Silver Member , Thu 26-Apr-12 07:41 PM
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                              Reply message I was too polite to comment there Richard...
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          Reply message That is just plain misleading Neil...
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               Reply message No Jim, I was NOT misleading...
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