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06-01-2011, 10:48 AM   #1
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DA 18-135mm not known by K5 nor K20D?

When I look at the EXIF data of pics taken with my K5 and DA 18-135mm, they do not name the lens I was using.

Other lens, such as my DA* 16-50, get properly listed as "Lens Model: smc PENTAX-DA* 16-50mm F2.8 ED AL [IF] SDM", though.

Same problem with my K20D.

K-5 has the latest firmware, 1.03.

Is it "normal" that the lens isn't shown in the Exif data, or might this be a weird defect?

06-01-2011, 11:01 AM   #2
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I have the same problem, I use the 18-135 with my K-5 and Exif data shows "unknown lens"
06-01-2011, 11:08 AM   #3
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I think it might be time for a sticky thread on this subject, since the question seems to come up fairly frequently.

The camera doesn't put the full name of the lens into the EXIF -- only a lens code. If your viewing software is older than the lens, or hasn't been updated lately, or doesn't care about Pentax, or whatever, then the viewing program won't have any idea what lens model the code corresponds to.

So basically, it's perfectly normal, since the 18-135 is a recently-introduced lens.
06-01-2011, 11:14 AM   #4
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Ah, thanks. So I have to boot Apple about this - I'm using the of OSX 10.6.7.

06-01-2011, 11:14 AM   #5

Join Date: Mar 2010
Location: SW Washington
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As Quicksand says, the software you're using probably hasn't been updated to recognize the 18-135 yet, as it's a recent lens.

For instance, in my case PhotoME doesn't recognize the 18-135's ID number, but Pentax DCU and Lightroom both identify the lens perfectly fine.

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