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05-13-2008, 12:33 PM   #1
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FA 50mm macro and D fa 50 mm macro

I have often heard the Fa 50mm 2.8 macro described as one of pentax's sharpest lenses, however I am wondering about the D fa 50mm 2.8...

Is this a entirely different lense?
A re-work or a Fa lense for digital?

I have a D FA available to me and I am wondering if it is similar to the FA


05-13-2008, 05:24 PM   #2
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The DFA50 is nowhere near the same as a FA50. It is a good lens but wide open it loses out to the FA and is prone to CA. I own the FA and A versions and tried out the DFA a while back.

I think the DFA50 was redesigned just like the DFA100. Frankly I think Pentax made a blunder trying to make a smaller and lighter lens as it has definitely changed the optical formula.
05-13-2008, 05:47 PM   #3
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Original Poster
I had a feeling that this was the case.
I think i'll slink around and try to find a FA version.
05-13-2008, 06:36 PM   #4
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A 100mm macro lens is much more convenient than 50mm because it lets you keep more of a distance to the subject. Optically, the F, FA and D FA 100mm F2.8 are the same with 9 elements in 8 goups. Perhaps Pentax did some tweaking of the coating on the D FA to make it suitable for digital. I practice I can't seen any difference between the image quality of the FA and D FA.

05-13-2008, 06:57 PM   #5
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I've hadA/F/FA/DFA100/2.8 macro and FA/DFA50/2.8 macro, and I agree w/ creampuff, the DFA ones seem to have alot worse CA (or PF) problem than the F/FA ones, and they are not as sharp as the F/FA ones at wide apertures. But the DFA ones are much lighter and easier to carry around.

For pure macros (where you need to stop down to F8~16 mostly), you might not see any difference at all.
05-14-2008, 06:02 AM   #6
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Is there any link for a review of DFA50mm?
since, this DFA50 is not found in Pentax Lens Tests
05-14-2008, 09:01 AM   #7
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The FA 50 f/2,8 is blisteringly sharp. Here are some regular shots along
with some close-focus (I need to search for actual macro shots, they're mixed in
with others) :

prev cropped

No religious or blasphemous significance to me, just liked the scene/shadows

Previous cropped - this is a 50mm, not 200! The resolution is pretty stunning.

05-14-2008, 05:47 PM   #8
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My pictures were taken by D-FA50mm Macro on K100D Super, ISO 200, AWB.

Attached Images
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PENTAX K100D Super  Photo 
View Picture EXIF
PENTAX K100D Super  Photo 

Last edited by Stonechat; 05-14-2008 at 06:03 PM.

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