You will hear all kinds of nonsense about the 23 and 35 F2s. They are not soft wide open. In fact, they are great little lenses.
The 23 especially I fell in love with. If you want to look in my Italy Album on Flickr, you will see 70 or so images taken with the 23 and 35 F2 a few weeks ago. I normally travel with zooms, but I'm loving the little F2 prime lineup and just got the 50F2.
Those lenses are built like tanks. They are very fast focusing, quiet, extremely compact, great IQ and very sharp. Oh ... and the have WR. That is important if nothing else than for light showers, build quality and dust.
Let me tell you this. I dropped the 23 one time (on the Patagonia trip) from about chest high and it fell in the dirt and rolled down a trail. I have tested it every way I know and it is sharp and did not hurt the focus motor. I got lucky. But the lenses are tough and extremely well made. I love the little F2 lineup.
No, they are not soft, not even wide open. I think some of the guys who say that might have softness issues of their own. Maybe a little soft in the head? Or.... ;-)
Just kidding guys. But come on.... Soft? Fuji glass soft? I don't think so.
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Greg Johnson, San Antonio, Texas
www.flickr.com