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06-04-2019, 03:49 PM   #1
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K-1 misreading Tokina lens.

I have just bought a Tokina 20-35mm 3.5-4.5 for my K-1 and I am enjoying the lens. On the EXIF data the lens focal length is correct and the aperture but it reports lens as smc Pentax-F 35-70mm F3.5-4.5 is this a problem when I process a .DNG raw file? or do I ignore it?

Best Wishes
Andrew


Last edited by Adam; 06-04-2019 at 07:13 PM.
06-04-2019, 03:58 PM   #2
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what software are you using to process/convert the RAW files?
06-04-2019, 03:58 PM - 1 Like   #3
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Ignoring it is fine. It only matters if you apply the lens profile correction to your RAW file.
06-04-2019, 04:00 PM - 1 Like   #4
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Just ignore it, Amarsh. Tokina must be using the same Lens ID as that old Pentax lens.

In Lightroom, choose the right correction profile (if you use them at all) or untick it.

06-04-2019, 04:02 PM   #5
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QuoteOriginally posted by clackers Quote
Just ignore it, Amarsh. Tokina must be using the same Lens ID as that old Pentax lens.

In Lightroom, choose the right correction profile (if you use them at all) or untick it.
Now just sit back and wait for 200 more posts telling him to just ignore it.

This one is gonna go 8 pages long...
06-04-2019, 04:04 PM   #6
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QuoteOriginally posted by pepperberry farm Quote
what software are you using to process/convert the RAW files?
Normally Darktable or Raw Therapee

---------- Post added 06-04-19 at 04:06 PM ----------

QuoteOriginally posted by alamo5000 Quote
Now just sit back and wait for 200 more posts telling him to just ignore it.

This one is gonna go 8 pages long...
Perhaps I should apologize in advance!
06-04-2019, 04:13 PM - 1 Like   #7
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QuoteOriginally posted by amarsh1958 Quote
Perhaps I should apologize in advance!
No no... it's funny. I laugh at the board sometimes because we have so many Canadians and all of them are so helpful.... we wind up with 9 pages of 'help' even after things were solved on page 2.
06-04-2019, 04:19 PM   #8
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Your camera is not at fault. It merely passes on the lens id code it read from the lens. Several lens makers use ambiguous lens codes, sometimes intentionally the same as similar model Pentax lenses. When opened on your computer, the software will look up the ID in a table and usually will display the first lens in line. For a full list of codes and ExifTool's display names for each, see:

ExifTool | Pentax Tags -- LensType codes

Note that codes having duplicates in the above linked table that have decimal values are for duplicates. The code read from your lens is "3 28"...
'3 28' = smc PENTAX-F 35-70mm F3.5-4.5 or Tokina Lens
'3 28.1' = Tokina 19-35mm F3.5-4.5 AF
'3 28.2' = Tokina AT-X AF 400mm F5.6

Steve


Last edited by stevebrot; 06-04-2019 at 04:26 PM.
06-04-2019, 05:01 PM   #9
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If you used Lightroom you could use LensTagger to 'fix' the ID.

LensTagger – Exiftool Lightroom Plugin

But you can use the ExifTool command line too, assuming Darktable or Raw Therapee allow you to save metadata to a file.
06-05-2019, 07:43 AM   #10
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Mine does that, too... it’s normal...

As a bonus, though, it only does that at 35mm. At wider focal lengths, mine gets picked up as a Tokina 19-35, which is a different lens, but which works for me...

I use Apple’s Photos app for all that...

-Eric
06-05-2019, 08:02 AM   #11
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QuoteOriginally posted by TwoUptons Quote
As a bonus, though, it only does that at 35mm. At wider focal lengths, mine gets picked up as a Tokina 19-35, which is a different lens, but which works for me...

I use Apple’s Photos app for all that...
Yep...some software will whittle down the possible id's based on the focal length and/or shooting aperture.


Steve
06-05-2019, 10:40 AM - 1 Like   #12
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I have a Tokina 80-400 with the same issue. Don't worry about it.
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