Justin D Offline Upload & Sell: Off
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The Nikon 28mm 2.8 AI-s has fallen off the radar in recent times, but it was one of the most highly regarded wide angles for F mount, if not the most highly regarded. The Nikon engineers were apparently given free rein, regardless of profit margins and marketing etc., to make the best lens they could.
In my tests on my current 450D - I sold my 5D some months ago in anticipation of the obvious - it does a bit better resolution wise at a very high pixel density than the Oly 28 3.5 with better bokeh (the Oly is terrible in that dept) and good contrast (not too high or too low).
I was never blown away by the C/Y 28, and there are plenty of people around who feel it is overrated. It was just meh - about the same as the Oly 28 3.5 (which, considering it costs $50, is still a bargain - the C/Y, not so much). The Oly 3.5 also transmits light much more like an f4.0 lens from tests done against other lenses at 4.0 - the same exposure time as the other lenses at 4.0 gets the same exposure. The Oly is absolutely tiny, and I may well keep it around as a pancake for my 450D. I thought manual lenses would suck to use on the 450D and they do, until you use liveview, which is simply a godsend for manual focus. The viewfinder of the 450D is utterly useless, however, and it's not ideal holding the camera a foot from your face.
The Nikon is good enough to become my one and only moderate wide angle prime - I will sell the much more expensive ZF 35 in the near future. Be careful which version you get - there are AI lenses and AI-S e lenses, which are vastly inferior (apparently). It is worth consideration among the very best moderate wide angles, IMO, though I haven't seen the corners on FF yet. The corners are, according to other tests, good right from wide open - better than either the Oly 2.0 or the C/Y, according to 16:9.
On the downside, the focus ring and aperture are a bit loose on my copy. Not sure if that is a general property of these lenses.
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