Ian McKee writes: > ... stuff snipped ... > Calumet sells a set of twelve pinholes ranging from .0059" to .032". I have > mounted these on a 4" x 5" camera and shot the whole series at an > arbitrarily selected bellows extension=focal length of 210 mm. With each > pinhole I get the same image and the same degree of sharpness. > ... stuff snipped ...
Give us more details. What was your test subject? Did you use film or paper negatives? How did you measure the sharpness? I did a similar experiment with a set of commercial pinholes, on a 35mm camera mounted 100 mm from the film. I photographed a resolution chart. My results were that I could see the difference between different pinhole sizes.
