"Mirrorless" is anachronistic

Started Sep 19, 2012 | Discussions thread
JosephScha Veteran Member • Posts: 4,934
Re: Photo terminology in general is anachronistic

Full frame - I think is because 35mm movie film is just a large reel of the same stuff that was put into cans for still photographers. Images on the film were 24mm across - from sprocket holes on one side, to the sprocket holes on the other, with a bit of margin. So 35mm film cameras shoot pictures that are 24mm x 36mm. I think "full frame" means the sensor is just as large as a 35mm film negative, ie, 24mm x 36mm.

I can't find a good reference for this, but that's what I remember. It's not that the image circle fills the sensor's frame, it's that the sensor is as big as a 35mm film frame.

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