Human Hair on Paper

I tested the focus stacking software today and used a hair (from my head) on a blank piece of white paper for the images. The depth of field of the lens was around 10 microns, but the width of a hair is more like 50 to 100 microns. This means that its not possible to focus the hair and the paper at the same time. That made it a reasonable choice of sample to use to explain focus stacking.

From the Z stack, I have selected a couple of images, one with the paper in focus and one with part of the hair in focus. This demonstrates the problem to be solved.

Before that, I will show an overview of the set up, and afterwards, the result from focus stacking: an image showing the hair and paper grain simultaneously in focus, to the best of the software’s ability.

I tested the focus stacking software today and used a hair (from my head) on a blank piece of white paper for the images. The depth of field of the lens was around 10 microns, but the width of a hair is more like 50 to 100 microns. This means…

I tested the focus stacking software today and used a hair (from my head) on a blank piece of white paper for the images. The depth of field of the lens was around 10 microns, but the width of a hair is more like 50 to 100 microns. This means…