I've seen one of them. To me it's over priced and aimed at newer photographers who are impressed with his work and assume his techniques are big secrets that will help them get the same results.
Friend of mine bought his video on perspective blending and asked me to watch it with him because he was having trouble understanding it. He could have achieved the same results or even better with far simpler techniques. The fact that the end result is a nice shot seems to validate the technique. It's basically just shooting a vertical series with about 90% overlap where he's using focus stacking but manual blending. Mostly just watching him sit there and morph and warp and blend things for 30 minutes. Fortunately he quits talking and shows it in fast motion at the end. It would be surprising if all that data manipulation would hold up to a large print.
Unfortunately there is so many videos out there it's difficult to know what's good, what's not so good, what's stupid, and what's just plain wrong, and some of the later categories are costly ... with the assumption that if people pay then they must be right/good.
Not sure what the solution is to that, other than validating the source and sticking with those who really do know what they are talking about.
