K-1 misreading Tokina lens.

amarsh1958 · 06-04-2019, 03:49 PM

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.

**pepperberry farm** · 06-04-2019, 03:58 PM

what software are you using to process/convert the RAW files?

alamo5000 · 06-04-2019, 03:58 PM - **1 Like**

Ignoring it is fine. It only matters if you apply the lens profile correction to your RAW file.

**clackers** · 06-04-2019, 04:00 PM - **1 Like**

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.

alamo5000 · 06-04-2019, 04:02 PM

Originally posted by clackers

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...

amarsh1958 · 06-04-2019, 04:04 PM

Originally posted by pepperberry farm

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 ----------

Originally posted by alamo5000

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!

alamo5000 · 06-04-2019, 04:13 PM - **1 Like**

Originally posted by amarsh1958

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.

stevebrot · 06-04-2019, 04:19 PM

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

**boriscleto** · 06-04-2019, 05:01 PM

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.

**TwoUptons** · 06-05-2019, 07:43 AM

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

stevebrot · 06-05-2019, 08:02 AM

Originally posted by TwoUptons

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

antipattern · 06-05-2019, 10:40 AM - **1 Like**

I have a Tokina 80-400 with the same issue. Don't worry about it.

06-04-2019, 03:49 PM	#1
amarsh1958 New Member Join Date: Nov 2016 Location: Le Grand Madieu, France Posts: 11	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, 04:19 PM	#8
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	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.

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06-04-2019, 03:58 PM	#2
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,678	what software are you using to process/convert the RAW files?

06-04-2019, 03:58 PM - 1 Like	#3
alamo5000 Pentaxian Join Date: May 2012 Posts: 2,962	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
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	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
alamo5000 Pentaxian Join Date: May 2012 Posts: 2,962	Originally posted by clackers 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
amarsh1958 New Member Join Date: Nov 2016 Location: Le Grand Madieu, France Posts: 11 Original Poster	Originally posted by pepperberry farm 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 ---------- Originally posted by alamo5000 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
alamo5000 Pentaxian Join Date: May 2012 Posts: 2,962	Originally posted by amarsh1958 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, 05:01 PM	#9
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	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
TwoUptons Loyal Site Supporter Join Date: Nov 2015 Photos: Albums Posts: 4,214	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
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by TwoUptons 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
antipattern Senior Member Join Date: Apr 2012 Location: Berlin, Germany Photos: Albums Posts: 232	I have a Tokina 80-400 with the same issue. Don't worry about it.