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

Started Nov 10, 2012 | Discussions thread
jvkelley Contributing Member • Posts: 849
A normal lens has about a 45 degree angle of view -From 1922 book.

I spent a few minutes on Google to try to find the oldest possible reference to a "normal" lens.  The oldest thing I could find was a book called "The Exhibition Print" published in 1922.  On page 367, the author refers to a normal lens having an angle of view of about 45 degrees.  This would be 52mm on a full frame camera.  This was published back when view cameras with various sized films were common.

After reading this, I'm starting to question all those articles and myth debunkers that say a normal lens is really wider than 50mm on full frame.

The Exhibition Print

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