Hi Dan. Thank you so much for your detailed and very considered reply. It is very much appreciated, in fact I have printed off a copy so that I can address and consider issues over timeand while photographing. I am particularly relieved about your remark in reference to wearing glasses " ..they wont make a blurry image look good.." That was an issue I couldnt resolve in my own mind and if the opposite to what you say were the case it would be a problem almost impossible to correct. It is a difficult question to explain especially online so I am most grateful that you picked that up. Your subtle observation also about the tripod head actually moving just BEFORE you lock it is absolutely true now I think about it. However my two fairly heavy duty tripod heads are both Manfrottos and I am surprised neither perform better than this. I am very interested in your idea about a geared head thugh and will have a look at them. However your point about the LCD hiding small errors of focus during macro work is hugely important. I have not been using live view magnification and didn't even know it was an available function on the 7100 until I looked it up after your remark. . I aim to practice that tonight. Thank you so much for you articulate and carefully set out advice .. I really like the four steps at the end of your post. Many many thanks. Denise. PS I love you macro photos. Oh that I could ever achieve such sharp beautiful pics. !