at 2.0 or 1.4, you probably need a different focus screen to be able to focus accurately. Normal ones are optimized for brightness, not focus accuracy, at least that\'s the case on the 5D Mk II. I use several MF lenses, including the Rokinon 85mm 1.4 on my 5D Mk II, I have no probably focus it accurately and relatively quickly using the EG-S screen at f2, at 1.4 I\'ll need to be pretty careful.
May 29, 2011 at 10:54 PM
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