We have just posted a new video for Members that we are certain you will find useful! The Perfect Export: Aspect Ratios, Resolution, and Cropping.
While we can agree that this video doesn't exactly fit into the studio lighting world per se, it certainly is a subject any photographer wrestles with. This is a subject I have taught often here at the studio, and one that is near and dear to my heart as we ran a boutique printing operation here years ago.
Members can find the video in The Studio Lighting Course in Module 7: Bonus Materials.