http://www.pentaxforums.com/forums/pentax-slr-lens-discussion/130307-out-focus-comparison-fa43-a50-1-2-k50-1-4-fa50-1-7-da*55-fa77-fa*85.html
Nice and Useful Test! How many Pentaxians have all those marvels at the same time and could do a group test amongst them like this? ..at the same time and place and for the same target!~ :-D
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A*50/1.2 Vs DA*55/1.4 - What Would You Choose?