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07-26-2009, 05:12 PM   #1
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the obligatory 16-50* brick wall test

I rail against them, but with this lens it is worth checking. Besides, all the cool kids are doing it...


Handheld, K20d body
16mm - 2.8
overall


center


bottom left


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Last edited by nostatic; 07-26-2009 at 05:26 PM.
07-26-2009, 05:13 PM   #2
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16mm - f4

overall


center


bottom left


top left


top right


bottom right
07-26-2009, 05:14 PM   #3
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16mm f7.1

I rail against them, but with this lens it is worth checking. For your approval (handheld)

16mm - 2.8
overall


center


bottom left


top left


top right


bottom right
07-26-2009, 05:15 PM   #4
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And just for grins, 15/4


15mm - f4
overall


center


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top left


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Last edited by nostatic; 07-26-2009 at 11:13 PM.
07-26-2009, 05:16 PM   #5
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15/4

15mm f7.1

overall


center


bottom left


top left


top right


bottom right
07-26-2009, 05:30 PM   #6
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The resolving power of the zoom seems to be better than the DA 15 at the corners? That's... interesting.

I guess I'll be sticking to DA 12-24 or Siggy after all for wide angles

Either way your copy looks fine to me.
07-26-2009, 08:17 PM   #7
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QuoteOriginally posted by Andi Lo Quote
The resolving power of the zoom seems to be better than the DA 15 at the corners? That's... interesting

based on what has been shown, i'd say you are correct.

Very interesting.
07-26-2009, 08:48 PM   #8
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The one rap on the 15 is "soft at the corners" and that certainly shows up here. But it also shows almost no distortion, which the 16-50* cannot claim at 16mm. And it is tiny compared to the 16-50. But the 16-50 is weathersealed and faster. Everything is a trade-off...

In the end the test are only useful to show if there is something physically "wrong" with the lens. The inherent characteristics are what they are.

Just for grins, a few 15 and 16 "real world" shots - no pp, just jpg conversion in Aperture. Full size jpg linked below.


http://nostatic.com/photos/15-1-f.jpg


http://nostatic.com/photos/16-1-f.jpg


http://nostatic.com/photos/15-2-f.jpg


http://nostatic.com/photos/16-2-f.jpg

my fav for color

http://nostatic.com/photos/31f.jpg

07-27-2009, 02:40 AM   #9
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Yes, I thought you were bent against these 'wall' tests of lenses, but as you've shown it does reveal its weaknesses when pushed to the limit.

I still love the results I get from the 16-50...
07-27-2009, 09:24 AM   #10
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you're not even parallel with the wall!!

distortion figures and corner-to-corner sharpness cannot be conclusive!

epic fail!
07-27-2009, 09:26 AM   #11
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Wait...you used the 16-50 for things besides brick walls? Pretty sure that's not allowed
07-27-2009, 09:42 AM   #12
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QuoteOriginally posted by Gooshin Quote
you're not even parallel with the wall!!

distortion figures and corner-to-corner sharpness cannot be conclusive!

epic fail!
hey, I was drunk...

Well, not really. I don't care about "conclusive". I leave that to the measurebators. I just wanted to get a feel for whether or not the 16-50 was well-behaved. And this copy seems to be just that. I expect barrel distortion with the zoom set wide and I expect the 15 to be a little soft wide open at the corners due to the small size.

"epic fail!" for me would be if I actually wasted even more time making measurements and running dxo tests. As it stands I'm embarrassed that I shot a brick wall...when I could have been shooting targets:



07-27-2009, 09:43 AM   #13
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thats a pretty small caliber...

like what, 3mm?
07-27-2009, 09:47 AM   #14
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QuoteOriginally posted by Gooshin Quote
thats a pretty small caliber...

like what, 3mm?
The top is .22lr pistol, off-hand at 10m.

The bottom is 25 rounds of 12ga at 7m.

Kind of a yin/yang thing...
07-27-2009, 09:48 AM   #15
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i prefer rocket launchers myself...

shell shock ftw!
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