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Lens identifications from EXIF

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Iliah Borg View Drop Down
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Posts: 49 		Post Options Post Options   Quote Iliah Borg Quote  Post ReplyReply Direct Link To This Post Topic: Lens identifications from EXIF
    Posted: 04 January 2015 at 22:22
Dear Ladies and Gentlemen,

Currently, we can identify some of the lenses for A- and E-mount based on their signatures in EXIF, the table of known lenses is available at http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Sony.html#LensType and at http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Sony.html#LensType2

If you happen to have a lens that is not in the lists, can you please upload or e-mail a raw file, or - if you can't - even a JPEG out-of-camera shot with such a lens. Subject does not matter, even a black frame is absolutely OK.

That would help third-party developers to offer better information and possibly better processing of your shots.

Thank you in advance,
Iliah Borg
iliah i borg@gmail.com (spaces to be replaced with dots)

Edited by Micholand - 06 January 2015 at 14:20
--
Best regards,
Iliah Borg
 



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thornburg View Drop Down
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Posts: 3765 		Post Options Post Options   Quote thornburg Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2015 at 23:37

I'm confused.

Can you give a little more detail?
Sony a3000, a6000, a57, a99 - Sony E 16-50, 28/2 | Vivitar 13, 85 | Minolta 24, 28-105, 35-105, 50/1.7, 75-300 | Tokina 28-70/2.6-2.8 | Sigma 70/2.8 Macro | Tamron 70-200/2.8 | Celestron 1000/11
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Posts: 2674 		Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 06:16
I've got a few that isn't on that list, give me a day or 2 and I'll go through them and take a shot each.

Just a quick look at it
Tokina 28-70 F2.8-4.5 AF
Tamron AF 28-105 F4-5.6 IF
Tamron 28-200 F3.8-5.6 (171D)
Tamron 28-200 F3.8-5.6 (71DM) Above and this is lumped together in the Dyxum database btw
Sigma 150-500 F5-6.3 DG APO HSM OS

Just need a .jpg with full exif intact?

Oh bugger it, got nothing better to do...email sent, hope your inbox can handle a 22Mb file.


Edited by SnowFella - 05 January 2015 at 06:46
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Iliah Borg View Drop Down
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Posts: 49 		Post Options Post Options   Quote Iliah Borg Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 13:00
Thank you, files received. That's a great help.
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Iliah Borg View Drop Down
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Posts: 49 		Post Options Post Options   Quote Iliah Borg Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 13:06
Sometimes we want to know what lens was used to shoot a particular scene. Lenses are recognized by lens ID in EXIF/Makernotes (please see the tables I referenced) and a combination of factors (recorded also as tags in EXIF/Makernotes), such as: minimal focal length, maximal focal length, maximal aperture at minimal focal length, maximal aperture at maximal focal length, lens mount, lens format, taking focal length, maximal aperture at taking focal length, taking aperture, and so on. Some lenses are missing in the tables, and to improve recognition sample files (preferably, ARWs) are needed.
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thornburg View Drop Down
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Posts: 3765 		Post Options Post Options   Quote thornburg Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 14:34
What product is this for?
Sony a3000, a6000, a57, a99 - Sony E 16-50, 28/2 | Vivitar 13, 85 | Minolta 24, 28-105, 35-105, 50/1.7, 75-300 | Tokina 28-70/2.6-2.8 | Sigma 70/2.8 Macro | Tamron 70-200/2.8 | Celestron 1000/11
 



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Iliah Borg View Drop Down
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Posts: 49 		Post Options Post Options   Quote Iliah Borg Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 14:42
Obviously, for exiftool, as you can see I posted links to Phil's most excellent work. exiftool is widely used by many other pieces of software that deals with JPEGs and raw files - please see 'Related' section here, where some (I would say 10%) are listed: http://www.sno.phy.queensu.ca/~phil/exiftool/index.html#links

exiv2 is another one, also using same tables.
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kiklop View Drop Down
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Posts: 10564 		Post Options Post Options   Quote kiklop Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 15:01
First thing first; i made this thread a sticky one. Hopefully, it will help a bit.

This (collecting lens ID) is something we did on few occasions since the KM 7D was introduced and back in the days we worked together here with Phil Harvey to get most of makernote lens IDs. Of course, a lot of new lenses (and new mount) have been introduced so there is still some work to do.

I would urge anyone with lenses without "known" maker note ID to share their images so that the ID can be pulled out.

I made a quick utility page from our lens database (hopefully not too quick to have bugs :( ) that may be used to find lenses that we miss IDs for (our lens database is hopefully up-to-date enough to be used as a quick reference.   

lens makernote ID list

There is a column "makernote ID"; if it is empty, and you have that particular lens, then please let us know.


Iliah, if our community can be of further assistance just ask.
We may have questions waiting for answers !
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Iliah Borg View Drop Down
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Posts: 49 		Post Options Post Options   Quote Iliah Borg Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 18:07
Dear Mladen,

Many thanks!

Based on the JPEGs which were kindly sent to me,
Tamron AF28-200mm F/3.8-5.6 Aspherical (Model 71D)     id=128
Tamron AF28-200mm F/3.8-5.6 LD Aspherical [IF] Super (Model 171D)     id=128
Tamron AF28-105mm F/4-5.6 [IF] (Model 179D)     id=128
Sigma 150-500mm F5-6.3 APO DG OS HSM     id=128
Tokina 28-70 F2.8-4.5 AF     id=25511

All sent to Phil.

Edited by Iliah Borg - 05 January 2015 at 18:10
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kiklop View Drop Down
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Posts: 10564 		Post Options Post Options   Quote kiklop Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 19:48
Thanks Iliah !

I updated our lens database with ids provided.
We may have questions waiting for answers !
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JosR View Drop Down
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Posts: 108 		Post Options Post Options   Quote JosR Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2015 at 22:11
I can add the Lens ID of 2 old (around 1995) Sigma lenses I used:

Sigma 28-105mm F4-5.6 UC - Lens ID 25531
(this is the original UC version, which is not yet in the Dyxum database, but is already in the Exiftool list)

Sigma 70-300mm F4-5.6 APO Macro - Lens ID 25611
(this is already in Exiftool, and in the Dyxum database with name "Sigma 70-300 APO macro")

In addition, I think several of the Lens ID numbers missing in the Dyxum database are already known in the Exiftool list -
e.g. the ID numbers of some newer Tamron lenses, already in Exiftool but not yet in Dyxym database:
204 = Tamron SP 24-70mm F2.8 Di USD
214 = Tamron SP 150-600mm F5-6.3 Di USD
224 = Tamron SP 90mm F2.8 Di Macro 1:1 USD
ILCA-77M2 + SAL1680Z, SAL70300G, SAL70400G2, Minolta 100mm Macro, ILCE-7RM4 + SEL24105G, SEL100400GM, LA-EA5
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Ltgk20 View Drop Down
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Posts: 81 		Post Options Post Options   Quote Ltgk20 Quote  Post ReplyReply Direct Link To This Post Posted: 06 January 2015 at 00:30
Sigma UC Zoom 28-70mm f2.8-4 - 25511
Tamron SP AF 70-200mm F2.8 Di LD IF Macro - 255
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kiklop View Drop Down
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Posts: 10564 		Post Options Post Options   Quote kiklop Quote  Post ReplyReply Direct Link To This Post Posted: 06 January 2015 at 09:44
Originally posted by Ltgk20 Ltgk20 wrote:

Sigma UC Zoom 28-70mm f2.8-4 - 25511
Tamron SP AF 70-200mm F2.8 Di LD IF Macro - 255

Thank you!

Originally posted by JosR JosR wrote:


Sigma 70-300mm F4-5.6 APO Macro - Lens ID 25611
(this is already in Exiftool, and in the Dyxum database with name "Sigma 70-300 APO macro")

In addition, I think several of the Lens ID numbers missing in the Dyxum database are already known in the Exiftool list -
e.g. the ID numbers of some newer Tamron lenses, already in Exiftool but not yet in Dyxym database:
204 = Tamron SP 24-70mm F2.8 Di USD
214 = Tamron SP 150-600mm F5-6.3 Di USD
224 = Tamron SP 90mm F2.8 Di Macro 1:1 USD

Thank you; lens database updated.

Originally posted by JosR JosR wrote:


Sigma 28-105mm F4-5.6 UC - Lens ID 25531
(this is the original UC version, which is not yet in the Dyxum database, but is already in the Exiftool list)

I added the oldest UC lens that i found to the lens database. It is this one that you are referring too?
Sigma 28-105 UC
We may have questions waiting for answers !
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SnowFella View Drop Down
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Posts: 2674 		Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 06 January 2015 at 09:59
Any thoughts towards splitting the 2 Tamron 28-200 lenses that currently are lumped together in the database?
They do have their similarities but in aspects are 2 totally different lenses inregards to minimum focus distance and how they focus. 71DM extends with focusing while the 171D is an IF design.

Edit: I take that back as I just noticed they have been split already
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