Adding adapted lens information to picture metadata

[andymcd]

I've put together some software for myself that allows me to add lens information for pictures taken with adapted/manual lenses on my Fuji X (i.e. anything that is using the "Shoot without lens" option). I find it annoying that all my pictures have a default focal length and nothing else in them.

I have a list of my lenses, with their focal lengths and min/max apertures and just select lens, focal length (for a zoom) and aperture and it gets added to the picture's setting file (my own format) and the information is then added into the EXIF using EXIFTool when uploading to Flickr or outputing a JPEG etc.

So far, so good and this appears to work quite well.

My question is whether I should create an extra entry for each lens if/when using a focal reducer. For example, my Nikon 50/1.8E has a declared focal length of 50. I'm thinking that I could have a second entry called "Nikon 50/1.8E (+ Focal Reducer)" and declare the focal length as 35.

Any thoughts?

[yukosteel]

That's impressive attention to details of image tech information.

I personally don't care what focus length is stored in my EXIF, and even don't switch that value in camera when changing manual lens.

 

One suggestion for your "+Focal Reducer" option - you can also declare reduced aperture value there. In particular case it's 35mm f1.2.

Basically such lens even exists and is adaptable for Fuji-X, it's Voigtlander 35mm f1.2. And it has the similar size to Nikon 50mm 1.8 + FocalReducer.

[imagei]

My question is whether I should create an extra entry for each lens if/when using a focal reducer. For example, my Nikon 50/1.8E has a declared focal length of 50. I'm thinking that I could have a second entry called "Nikon 50/1.8E (+ Focal Reducer)" and declare the focal length as 35.

Any thoughts?

That's what I do. I have a separate entry for when I'm using a focal reducer (with reduced focal length and the reducer info in the Lens Make and Lens Model fields). For example there's a preset called 'Primotar 135/3.5' and another called 'Primotar 135/3.5 (reduced)'. In the second case the 'Lens Model' field reads 'Primotar 135mm f/3.5 (Exakta); Lens Turbo II'.

 

If you're on OSX there's a great little app called 'Exif Editor' by Martin Novák which I use for this purpose. It has a preset editor so you can have a convenient list of all your lenses in a dropdown box. Then it lets you select shots visually and apply all the changes in one go.