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07-13-2012, 06:40 AM   #1
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FA*24 vs DA21

I came across a fairly mint copy of FA*24. The lens is in great physical shape with no paint loss anywhere, including the lens hood. Test chart shows excellent center performance wide open and acceptable performance in the corners (no better or worse than FA43). The lens would cost a little more than a new DA21, which I am also considering.

I plan to use the lens primarily for landscape, general walk-around and indoor family events.

Given that FA*24 doesn't seem to come up for sale all that often, should I just get the FA*24 and see if it works for me, or is DA21 a better buy for my intended use?


Last edited by chesebert; 07-13-2012 at 06:53 AM.
07-13-2012, 06:49 AM   #2
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I would definitely take the FA 24 over the DA 21 if cost wasn't too much different. You gain a little over a stop in aperture with the FA and the FA is compatible with full frame. Of course, it is quite a bit larger and some copies seem to have poor-ish border resolution. Resale value will be good on the FA * lens as well.
07-13-2012, 07:05 AM   #3
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The DA 21 will be a lot handier for the general walk-around,
and less intimidating (with hood) for the family portraits.
07-13-2012, 07:31 AM   #4
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The DA 21 is also very cheap used, but the 24 has an excellent reputation and is not so limited in low light.

07-13-2012, 07:42 AM   #5
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Big size difference, as shown in this image, courtesy of Twitch:



Also some people prefer the 21 FOV over the 24 FOV, and vice versa.

But for indoor family events, I agree the f/2 would be much nicer than f/3.2. Still, it's a much bigger/heavier lens and the large size means people notice your camera a lot more, in a negative way.

lots of previous discussions about these two lenses:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/28091-fa-24-2-da-21-3-2-ltd.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/135221-da21-vs...-compared.html
07-13-2012, 07:52 AM   #6
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The field of view is different, of course. The DA21 sees about 69 degrees, versus the FA*24's 62 (in round figures). I have the 24 and really like it. I thought about the DA21, but decided to go a bit wider with the FA20/2.8, which has a FoV of 72 degrees, and which is generally well-regarded. The enormous lens hood of the FA20 seems to be regarded as its major drawback, so I wouldn't be fazed by that, as an APS-C sensor can use a smaller one than originally used for the 94 degree FoV on 35mm.
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