Re: Official: Fujifilm GFX 50S Medium Format Announced!
Guy,
You are wrong. Diffraction is a physical property of the optical projection based on the dimension of the orifice it is passing by (physical interference). As Jordan has noted, you are advocating against very well established physics that have been scientifically proven, tested, taught, reproved, retested, retaught for eons (note: science by physicists, not by photographers trying to explain what they think is happening).
That being said, which brand of lens and the optical properties of the lens design you were using may have had the aperture farther away from the film (sensor) plane such that the EFFECT of the size of the airy disk is larger by the time it reaches the film plane. I won\'t try to dissuade you from what you believe you experienced (fool\'s errand) ... but, as to the fundamental principles of the physics of diffraction ... you are wrong.
There are a few other aspects to consider regarding pixel density @ how small we are slicing the projected image, such that you could cut the pieces small enough that the the airy disk is now larger than the pixels and thus associate that with diffraction limits.
But, just because you cut the pieces smaller ... really doesn\'t change the size of the airy disk, now does it? I mean, a pizza cut into 24 squares and one that is cut into 8 triangles is still the same size. And if you put the same amount of pepperoni on each, it doesn\'t matter if the pepperoni gets sliced or remains wholly intact. When you eat the whole pizza, you still get the same amount of pepperoni ... no matter how refinely you cut the slices.
Sep 20, 2016 at 09:03 PM
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