Quote Originally Posted by Modern Minoltian View Post
Or is there perhaps a way I can determine it on my own?
I know it's not usually that different from an F-stop, from what I understand, I'm mostly just curious.
I don't have any lens-specific info for you, but do have an old standard, Method for Determining Aperture Calibration of Motion-Picture Lenses. It's USA Standard PH22.90-1964 (reaffirmed in 1969). This was the standard for determining both f-stops and t-stops back in the day.

It's too tedious to describe, but if you look up Appendix II at the following link, it looks like the same basic info: http://www.archive.org/stream/journa...irich_djvu.txt

Even if you can dredge through it, my guess is that you'll decide you can live without t-stops.