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Tag Camera Lens - depending on the media format


Uwe
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Hello,

 

you get different information and catalog entries about the camera lens depending on the media format.

This is the original CR2 item and it's tag information:

Daminion_857_different_camera_lens_depending_on_media_format_CR2.JPG

 

and this is the DNG item of this CR2 file converted by Adobe DNG Converter:

Daminion_857_different_camera_lens_depending_on_media_format_DNG.JPG

The other formats (e.g. JPG, TIF, PSD...) based on the same CR2 file have the same tag information like the DNG item.

 

Update: from my point of view the "MakerNotes:LensType" (if not existend LensID) should have the highest priority and has the relevant information. E.g. in case I use the 70-200mm lens + the 2x converter I get this information in this field:

Lens Type Canon EF 70-200mm f/2.8L IS II USM + 2x

 

Regards, Uwe

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from my point of view the "MakerNotes:LensType" (if not existend LensID) should have the highest priority and has the relevant information. E.g. in case I use the 70-200mm lens + the 2x converter I get this information in this field:

Lens Type Canon EF 70-200mm f/2.8L IS II USM + 2x

 

Hi Uwe,

 

Daminion can only show, what has been written in the EXIFs by the converter.

From my understanding, the different name is caused by the DNG converter like it is with most raw converters. If you convert a RAW to Jpeg with different converters, you will end up most likely with different types of lens names in your database. With Silkypix for instance, you can even define by your own, how the original lens name from the RAW file should be written into the Jpeg.

Though I don't know why these converters can't just pick the original lens name and pass it on to the Jpeg without any changes.

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Hello,

 

In this case the Adobe DNG Converter doesn't change the LensType/LensModel information.

I used the ExifTool vers. 9.33 and Daminion 858 build for the examples below.

 

In case of the CR2 file (not used the XMP data written by Daminion):

MakerNotes:Canon:LensType = Canon EF 24-70mm f/2.8L

MakerNotes:Canon:LensModel = EF24-70mm f/2.8L USM

Daminion shows: Canon EF 24-70mm f/2.8L USM

This is not a original string of the metadata that can be found by the ExifTool. It seems to be a combination of a couple of tags. The combination of "Canon" and "USM" is not in any text string - neither in the CR2 nor in the XMP file that was written by Daminion.

 

In case of other formats:

Example of the DNG file created from the CR2 file above:

MakerNotes:Canon:LensType = Canon EF 24-70mm f/2.8L

MakerNotes:Canon:LensModel = EF24-70mm f/2.8L USM

Daminion s shows: EF24-70mm f/2.8L USM

 

Please pay attention additionally to the missing space between EF and 24.

Also for JPG and TIF files created from the same CR2 file Daminion uses: EF24-70mm f/2.8L USM.

 

Regards, Uwe

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Hi,

 

I'm using Canon Digital Photo Professional and I have noticed the same thing. For the RAW image the lens is "Canon EF-S18-55mm f/3.5-5.6 IS II" and for the JPG it is "EF-S18-55mm f/3.5-5.6 IS II". Here the only difference is Canon missing from the beginning. I ran exiftool to images with following results:

 

> exiftool -a -g -Lens -LensModel -LensType -LensInfo *2445*
======== IMG_2445.CR2
---- MakerNotes ----
Lens Type                       : Canon EF-S 18-55mm f/3.5-5.6 IS II
Lens Type                       : Canon EF-S 18-55mm f/3.5-5.6 IS II
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- EXIF ----
Lens Info                       : 18-55mm f/?
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- Composite ----
Lens                            : 18.0 - 55.0 mm
======== IMG_2445.JPG
---- MakerNotes ----
Lens Type                       : Canon EF-S 18-55mm f/3.5-5.6 IS II
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- EXIF ----
Lens Info                       : 18-55mm f/?
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- XMP ----
Lens                            : EF-S18-55mm f/3.5-5.6 IS II
Lens Info                       : 18-55mm f/?
---- Composite ----
Lens                            : 18.0 - 55.0 mm
======== IMG_2445.xmp
   3 image files read
> exiftool -a -g -n -Lens -LensModel -LensType -LensInfo *2445*
======== IMG_2445.CR2
---- MakerNotes ----
Lens Type                       : 52
Lens Type                       : 52
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- EXIF ----
Lens Info                       : 18 55 undef undef
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- Composite ----
Lens                            : 18
======== IMG_2445.JPG
---- MakerNotes ----
Lens Type                       : 52
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- EXIF ----
Lens Info                       : 18 55 undef undef
Lens Model                      : EF-S18-55mm f/3.5-5.6 IS II
---- XMP ----
Lens                            : EF-S18-55mm f/3.5-5.6 IS II
Lens Info                       : 18 55 undef undef
---- Composite ----
Lens                            : 18
======== IMG_2445.xmp
   3 image files read

 

The LensType code is equal for both images. It is twice in the RAW image and for some reason the code is interpreted to the corresponding string value for the RAW image, but for the JPG the LensModel string is used and the code is not interpreted.

 

In exiftool documentation page the code 52 is mapped to Canon EF-S 18-55mm f/3.5-5.6 IS II.

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  • 1 year later...

Hi,

I'm discovering this topic, playing with the 3.7 version of Daminion, and having the same minor "problem" as described by Juha.

The JPG and RAW files of the same image, directly extracted from the SD card (no other processing except the one in the DSLR), seem to have the same information (lens type or model). But Daminion keeps considering that the JPG and RAW files have different lenses ('Canon' name).

Which would mean that Daminion is not reading the same tag for JPG and RAW ?

 

Sorry to re-activate this thread. Murat proposed (link) a workaround with ExifTool to modify the tag of some of the files, but all the new imported images will have to be corrected as well...

Vince.

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