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  1. #18
    Join Date
    May 2007
    Posts
    670
    No, no. Don't need infinity focus, but maybe 6 feet away at 17 mm and 12 feet away at 35 mm so that you actually test the resolution of the lens and not just overall contrast (like it would be if you're shooting from only 7 feet away @ 35 mm). Just referring to the best practice of keeping distance to test target somewhat proportional to focal length in such tests. You know what I mean...
    Last edited by e_dawg; 12-07-2008 at 03:03 PM.

    Nikon: D300, D700, Nikkor: 24-70, 70-200, 70-300/VR, 24/2.8, 35/2, 50/1.4G, 60/2.8G, 180/2.8,
    Sigma: 10-20, 50-150/2.8, 50/2.8, Tamron: 17-50/2.8, 28-75/2.8, Tokina: 12-24, Zeiss: 25/2.8
    Olympus: E-520, E-3, 7-14, 9-18, 11-22, 12-60, 14-35/2, 14-54, 35-100/2, 50-200, 25/2.8, 35/3.5, 50/2
    Panasonic: G1, Leica: 14-50, 14-150, 25/1.4
    Sony: A700, A900, 24-85, 35-70, 70-210/4, 20/2.8, 24/2.8, 50/2.8, T 90 macro, Zeiss: 24-70/2.8, 135/1.8
    P&S: Canon S90, Panasonic: LX3


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