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02-12-2012, 10:25 PM   #1
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Location: Ninole, Hawaii
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M50mm 1.7 and M50mm macro dust off

In my quest to get a new prime lens, I have been evaluating some antique hardware, unused for years, to see if I really need the new toy. So out comes a M50mm 1:1.4 (1972 vintage) and a M50mm 1:4 (very elderly) but in great condition. The K-5 readily accepts the antiques (isn't Pentax great?)
and shooting of cats on my desk begin. Well after much comparison at numerous f stops, I have decided that the pics from these two lenses are almost impossible to tell
apart. I am just amazed with the sharpness and IQ and for a moment, question my drive for a new prime. But, the truth be, no matter how good these old lenses are,
I want auto focus. Except for my DFA 100mm macro WR, I'm too lazy to mess with a focus ring at my age. So, I have decided that the DA 40mm 2.8 Limited has the great
sharpness and overall rating with a million great reviews, so B&H will gain a few $$$ this week. By the way, I decided which focal length to get, by using my DA* 16-50,
standing at a normal distance from my normal subject--plants--and checking what FL kept coming up. Well 35-40mm was right in the sweet spot, so all things considered,
the 40mm is the winner. A shot with 50mm 1.4 attached.

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02-12-2012, 10:28 PM   #2
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Join Date: Nov 2009
Location: Ninole, Hawaii
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Posts: 74
Original Poster
Woops, the M50mm is a 1:1.4 not 1.7

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40mm, focus, k-mount, lenses, m50mm, macro, pentax lens, sharpness, slr lens
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