A professional illustration of how cameras and lenses aren’t perfect

http://www.lensrentals.com/blog/2014/02/why-you-cant-optically-test-your-lens-with-autofocus I noticed the same about my own equipment, which is why I use live view focusing with 300/2.8 when practical.

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One Response to A professional illustration of how cameras and lenses aren’t perfect

  1. Lyle says:

    There are always un-questioned assumptions in our practices. Another one is that the reticle in a rifle scope is always exactly aligned with its W&E adjustment vectors.

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