What is “Acceptable Sharpness”?Posted by drfl on December 23rd, 2009
A few weeks ago I wrote an article entitled “How to get Sharp Enlargements: Breaking the Megapixel Myth”that gave some tips on creating images that could be greatly enlarged. Now, I am going to address the issue of “Acceptable Sharpness”. In a perfect world of capturing sharp photographs we would all have a remote similar to the movie “Click” in which we could simply hit the “pause” button and everything would simply stop. At that point we could setup our gear, put our tripod in place, connect our cable release, set the mirror lockup, choose the sharpest aperture, put on the best lens, fix the lowest ISO, and then finally capture the image. Unfortunately, no such device exists and so we are left to deal with breezes that blow, animals that run, and hands that shake and As a result, not all nature images are studio perfect. When zoomed in and analyzed imperfections may be noted, perhaps a little motion blur, perhaps a bit of depth of field issues and of course, hand held photographs will almost always be less sharp than an image from a tripod mounted camera. Does this mean that these images should be tossed out due to technical imperfections? At what enlargement point would these images degrade? These are the questions that led me on my path to finding my “Acceptable Sharpness”.
