Exchangeable image file format (officially Exif, according to JEIDA/JEITA/CIPA specifications) is a standard.

Exif data Table example

Exif data NOT AVAILABLE, using Vintage Lenses

Exchangeable image file format (officially EXIF according to JEIDA/JEITA/CIPA specifications). Is a standard that specifies the formats for images, sound, and ancillary tags used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras.

The specification uses the following existing file formats with the addition of specific metadata tags. JPEG discrete cosine transform (DCT) for compressed image files, TIFF Rev. 6.0 (RGB or YCbCr) for uncompressed image files. This standard consists of the Exif image file specification.

All vintage lenses, I mean the ones produced before DIGITAL ERA (normally before 1995). Have NO electrical connections between the camera and the lens. It is therefore impossible to exchange data and generate the Exif file.

When processing these images you have to take an extra step to add the focal length and aperture to the images, as long as you know what these are.

It means taking good notes while out shooting. All the informations we can see when reviewing our images helps us get better my seeing what works and doesn’t work for us.