I’ve recently been asked by several students how to decide when to use the horizontal or vertical perspective. It’s not too tough a question to answer because generally, as a rule, when/if the subject is higher than wide, go for the vertical. If your not certain which will be the most visually appealing, check it out both ways. Live-view is great for this. On the subject of live-view, there is a wonderful explanation of how it works in the April edition of N Photo magazine. Here’s another suggestion: don’t limit yourself to portrait or landscape terms when referring to perspective. I’ve taken hundreds of vertical landscapes and horizontal portraits and you will too. Just call it what it is.