I was really delighted when, over a year ago Luis Manuel Iglesias Nuñez asked me to provide a preface for a book he was writing.     We have never met but we have built up a strong link because of our shared interest in the small things in this world. Luis had bought and read a copy of a book of mine on macro photography, quite a few years ago, that had been translated into Spanish. And here is the result, a superbly illustrated work – the text…