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400 mm in the electronic range finder to confirm focus with a blink and a beep. From the D40 manual: "If the lens has a maximum aperture of f/5.6 the faster, the viewfinder focus indicator to spend. Nikon does not have a bad lens that includes the focal length of 400 mm. The "entry level" is the 80-400 Its price is $ 8,500. With that kind of investment, you would do well to get the 70-300 you mention and make fun of yourself with long telephoto shots. I have the lens and find myself which is quite pleasant for most anything. It is not as sharp as a primary objective, but take a look: http://www.flickr.com/photos/samfeinstein/tags/70300/
Nikon AF-S 105mm f/2.8G IF-ED VR Micro Hands-on Review
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