Lightroom Classic: Add Crop Factor to the dropdowns for metadate filters and smart collections.

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I am using Lightroom Classic and am trying to organise my photos into ultra wide angle, wide angle, telephoto, etc. I thought this would be easy by using smart collections. However, to get a consistent result I need to use Focal Length 35mm, but can only find Focal Length of the dropdowns for metadate filters and smart collections. Not all of my cameras have a crop factor in the Lightroom back database so not all convert to having a Focal Length 35mm. However, having some exceptions is better than no facility at all. Currently I am envisaging finding the crop factor for each camera, adding the information to a spreadsheet and calculating the Focal Length 35mm, and then assigning a keyword, such as ultra wide angle to group them together. Which is not very efficient.
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Ivan Hurst

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Posted 1 month ago

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Ivan Hurst

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Just incase anybody is interested, the categories I have adopted are; 
0  -24 Ultra wide
24 - 50 Wide
50 - 85 Standard
85 - 135 Short telephoto
135 - 300 Medium Telephoto
300 - 600 Super Telephoto
600 - 2000 Ultra telephoto
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John R. Ellis, Champion

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There's an EXIF field, the anachronistically named FocalLengthIn35mmFilm, that stores the 35-mm-equivalent focal length, and LR displays it in the Metadata panel in the EXIF tagset. Unfortunately, many (most?) cameras don't store anything in that field.

While waiting for Adobe to implement this feature request, consider these other solutions:

- The Any Filter plugin can search and display both the crop factor and the 35-mm-equivalent focal length:





Since it's using Exiftool to extract metadata from every photo, it's not very fast.

- The Data Explorer plugin will display the 35mm-equivalent focal length; I'm not sure how fast it is, but it could be much faster than Any Filter.

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Ivan Hurst

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John, Thank you for this.
I did not realise that FocalLengthIn35mmFilm was exif data from the camera. I assumed that it was some clever backend calculation within Lightroom.
Fortunately my main camera brand is Pentax which is why I can see the field in some instances.
That should make it easier for Adobe to add separate fields for  CropFactorDatabase and FocalLengthIn35mmFilmCalc, both without relying on the source camera providing that information.

I will have a go at your suggestions and let you know how it goes.

Thanks again
Ivan