If you're reading this you probably already know that you can set focus trim per lens focal length or per lens (Blue line only).
I have set my focus trim several times on my LS lens's with average to decent results. BUT...I am curious..What is your workflow when you set focus trim...whts your set up?...do you use a special contraption to measure with, a yard stick?...do you have a set distance you use when adjusting focus trim...OR...do you use approximate working distances for that particular lens? Whats your methodology, tips & tricks to setting focus trim???