I find focus rails very fiddly and hard to move the tripod to the subject. (Also when I fly a tripod is extra weight etc). So any advice on how to do hand held focus stacking? Is this guide any good? It looks quite expensive? How to Hand Hold a Macro Focus Stack Am I right in thinking that you often have slightly manually move the photos to do a stack? (As opposed to just use a command as here Focus Stacking in Linux | BarryGrussling.com) to do it?