50mm "Normal" Lens... Ok, but "Normal" on FF or APS-C Sensor?

Started Nov 10, 2012 | Discussions thread
Lee Jay Forum Pro • Posts: 52,229
Re: A normal lens has about a 45 degree angle of view -From 1922 book.

jrtrent wrote:

I still agree with Tamron that "normal" isn't a single focal length, but can be anywhere between 40 and 60 mm (for a 35mm format camera),

Or anywhere else.

but I'm intrigued by the Journal of Vision abstract I referenced above which found focal lengths of 50-70mm to produce the least compression/expansion effects in images viewed by their test subjects. I already know from experience that I personally find focal lengths shorter than 50mm too wide for my tastes,

This is a very accurate representation of how this scene looked to my eye.  Does this look natural or close to it to you?

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