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07-13-2011, 01:40 PM - 1 Like   #1
Pentaxian
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Join Date: May 2008
Location: Sudbury, Ontario
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18-135 vs 16-45 and 15mm

I wanted to test my 18-135mm, so I tried it vs. a couple of well known performers. There was plenty of light, so I didn't feel a need to use a tripod. I shot a couple of photos with each to ensure I had representative results. I've previously tested the 16-45mm against the 15mm and had the same results. The 16mm is a little sharper, at f4 and at f8. Contrast favours the 15mm, but this is easy to change with a tweak on the contrast knob or a CPL. I didn't add a CPL to the 15mm because it won't take my 49mm B&W, the hood interferes. I don't use the 15mm with a CPL anyway.

I was pleasantly surprised at the 18-135mm in this test, it almost stands up to these wide angle heavy hitters, especially with a CPL. I have previously tested this lens vs my 18-55 II and 18-250mm, wide open at 18, 55 and 135mm and it outresolves both. It is not quite as sharp as my 55-300mm. Clearly it is in the middle of my pack of zooms, not bad for a superzoom. I need to send it in for an AF adjustment, as it needs +10 on my K20D. I will specifically request that they repair, not replace.

https://picasaweb.google.com/bonhommed/Comparo?authkey=Gv1sRgCLOD9LjmoOKTlAE#

Hit the magnifying glass for full resolution images.

07-14-2011, 10:52 AM   #2
Pentaxian
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Join Date: Sep 2006
Location: Denver, CO
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Posts: 10,686
Thanks for this. I agree regarding the 18-135 - perhaps not quite up to the others (corners not as good as 16-45, center not as good as 15), but close enough to not really matter for most purposes.
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