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01-22-2009, 09:55 PM   #1
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SMC FA 50 f1.4 vs SMC A 50 f1.4?

Hi,

Has anyone done or seen a comparison of these 2 lenses? The reason I ask is that the price of the FA lens seems to have dropped, they are on amazon for $200 shipped. I have also noticed that used ones in good condition are going for ~$130 to $150. I have been shopping for an SMC A version, but the asking prices are $100 to $125.

Does the "A" outperform the "FA" version? The FA version has gotten very good reviews ......

thanks!

01-23-2009, 02:26 AM   #2
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I don't think that you will notice any difference optically between the A and the FA.
I would take the FA to get AF.
01-23-2009, 02:48 AM   #3
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I have the FA50/1.4 and the A50/1.7 and I use both. A50 when I feel like focusing manually, because focusing the FA50 manually is not so pleasant.
01-23-2009, 03:13 AM   #4
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Owned both the A and FA 50mm f/1.4. Optically identical though I feel the lens coating on the A is just slightly yellower, perhaps due to age or slight changes in the lens coating.

Like blende8, I'd take the FA version for the benefit of AF.



01-24-2009, 04:04 AM   #5
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see also for a 50mm f1.7: sharper at wide open!
01-25-2009, 08:53 AM   #6
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Tech specs

Just in case you want to check the specs of the two,

B Dimitrov's link showing prime lens specs:
Pentax Normal Prime Lenses

and the reviews by Pentax forum users:
Pentax Lens Review Database - A Series Primes
Pentax Lens Review Database - FA Series Primes

I have used M 50mm f1.4. It was excellent. If you love manual focus then go for A 50mm. Soon I will have a F 50 f1.7 for AF. AF helps me in event photography where adults and kids are always moving.

The new lens price will go up from February I believe. So if you are planning to buy a new FA50, this is the time. The used lens price may go up as well because of this price rise
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