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03-17-2011, 11:52 AM   #16
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Surprised nobody has mentioned the weather-sealing. This is a significant advantage for my usage. That being said, weather-sealing is generally more useful in zooms, since you don't want to change lenses in harsh conditions.

The 55mm seems to be a decent performer, and the size is very nice compared to e.g. the Sigma 50mm. It's a bit concerning with all the reports about erratic focus and poor QC control. Dpreview tried three samples and all were decentered. They also complain about the AF performance.

03-17-2011, 12:13 PM   #17
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Let's not forget the SDM, some people just can't do without!
03-17-2011, 03:51 PM   #18
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QuoteOriginally posted by sewebster Quote
Let's not forget the SDM, some people just can't do without!
And some people just can't do with!

To be fair though, I haven't come across single reported SDM fail on DA*55, and that's quite impressive for SDM lens
03-17-2011, 05:16 PM   #19
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Lenses differ in terms of built and rendering, even if they look pretty similar with regards to aperture and focal length. Canon sells three 50s, ranging in price from around 100 dollars to 1600 dollars for the 50mm f1.2. It is other things than the aperture that make someone want the upper end lens. It is also things other than sharpness.

It was this same type of question that came up constantly in differentiating between the FA 35 and the FA 31. Very close lenses as far as sharpness, focal length and aperture. Very different lenses with respect to build, rendering and price.

I must confess that I never warmed to the FA 50. It is a fine lens, but I felt like I needed to stop down to f2.8 to get adequate sharpness, the bokeh was kind of busy. On the other hand, I love the DA *55. Very sharp from the get-go, bokeh really good from f2 on and I really like the extra 5mm. Doesn't sound like a lot, but it does make a difference.

The only lens that could displace this lens for me, would be if Pentax came out with an autofocus DA *50 f1.2.



03-17-2011, 06:25 PM   #20
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I got rid of my FA 50 now that I have a DA* 55mm, although technically dropping the 50mm was to help finance a K-5.

Reasons:
1. I much prefer 55mm than 50mm on APS-C.
2. It's weather resistant.
3. SDM makes less noise.
4. Nice big smooth manual focus ring.
03-17-2011, 06:42 PM   #21
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http://farm5.static.flickr.com/4031/4645343117_a1bec4499d_o.jpg

The only reason I would choose the FA50 over the DA*55 is if I wanted to use it on a film camera (and I've had 4 of them).

03-17-2011, 08:03 PM   #22
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point is, the DA55 is just much better overall.
03-17-2011, 11:59 PM   #23
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QuoteOriginally posted by JeffJS Quote
http://farm5.static.flickr.com/4031/4645343117_a1bec4499d_o.jpg

The only reason I would choose the FA50 over the DA*55 is if I wanted to use it on a film camera (and I've had 4 of them).

I believe DA*55 is FF capable, but you would have to use it film bodies which can control aperture.

03-18-2011, 12:08 AM   #24
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QuoteOriginally posted by axl Quote
I believe DA*55 is FF capable, but you would have to use it film bodies which can control aperture.
If that's true then the only reason left to buy the FA over the DA* is the screw drive auto focus on the FA50 (but I don't think it is though I've never actually tried it).

03-18-2011, 01:08 AM   #25
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OK, I just went and checked the test thread of DA lenses on FF bodies, and to my surprise this lens wasn't tested/checked. The summary only says: missing (no vignetting at f8), although digging deeper in reveals this:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/31629-da-lens-...tml#post680493
03-18-2011, 03:56 AM   #26
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QuoteOriginally posted by axl Quote
OK, I just went and checked the test thread of DA lenses on FF bodies, and to my surprise this lens wasn't tested/checked. The summary only says: missing (no vignetting at f8), although digging deeper in reveals this:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/31629-da-lens-...tml#post680493
Right. It would be hard to test because it has no aperture ring. Still, I do think it is full frame compatible.
03-18-2011, 04:21 AM   #27
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There are film bodies that can control the aperture, so shouldn't be a big deal...
03-18-2011, 08:51 AM   #28
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I have a ZX-L and intend to test this out in the near future.

03-18-2011, 09:45 AM   #29
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QuoteOriginally posted by axl Quote
There are film bodies that can control the aperture, so shouldn't be a big deal...
True, but most of them don't seem to be the favorites of filmers.
03-18-2011, 10:19 AM   #30
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QuoteOriginally posted by GeneV Quote
True, but most of them don't seem to be the favorites of filmers.
That's probably true
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