For anyone used to EXIF data, it can be frustrating not having lens and F-stop data from Lensbaby lenses. You can take notes, for instance in the Lensbaby Field Guide, which is great for the purpose, but taking notes can be cumbersome in the field.
My first version of lens tracking was to take a picture of the lens/optic before putting it on the camera, which gets you the information on the lens you are using but can be a little problematic since you might not have the opportunity to, or you can easily forget to, take the image before putting the lens on, and you do not get f-stop data.
My latest version is a card (well, a folded piece of paper) that lists the current (and some out of production) lenses and optics on one side, and the F-stops on the other. At any point, you can take a picture of the card with your thumb on the appropriate lens and flip it over for the f-stop (if you want to record that.) Once you import the images to your editor, you can tag them with the appropriate information (most will not let you edit the EXIF data, so I just use keywords) and delete the photos if you want.
Here is a PDF of the card, feel free to print and use it. The blank spaces can be used to add other lenses or other data you would like to add. Fold the page into thirds along the long lines first, then fold it in half. In this format it also fits perfectly in the top of my favorite case for Optic Swap optics:
Do you have any tips you would like to share? Drop them in the comments below, and remember to use discount code WHOLDMANN at Lensbaby.com for 10% off.