Yesterday I was attending a presentation at a local photography club. The speaker was a well known and well spoken photographer, and his works (at least most of them) are quite good. But the guy could not stop! He showed us about 50 interesting images, then a few tens more images which the audience watched with less interest, then more, then still more, etc, etc. Eventually more and more people began to leave, but the speaker continued talking regardless, obviously enjoying himself. He forgot what every presenter must know and unconditionally follow: less is more. The span of attention of every audience is limited and trying to extend your performance beyond this span is practically senseless. For example, for a slideshow type presentation (a series of images with brief comments) the optimal number of images should be somewhere in the range 30-40. I know, I know, it is hard. When I speak about my own work, I can do it infinitely and it is practically impossible to shut me up. But here what I noticed: when I watch presentations by other people, then after 30-35 images I begin to feel that this is probably enough. And the faces of people around me usually express the same feeling … . So here the advice: limit your performance to 30 pictures. Ok, let it be 35. OK, let it be 40, but this is it! Not more!! Never ever!!! Because less is more.