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I started to read the Ansel Adams books on line.
http://manualesdecine.files.wordpress.com/2012/05/the-camera-ansel-adams-series-no-1.pdf
http://manualesdecine.files.wordpress.com/2012/05/the-negative-ansel-adams-series-no-2.pdf
http://manualesdecine.files.wordpress.com/2012/05/the-print-ansel-adams-series-no-3.pdf
In the first one he makes reference to Twin-lens reflex camera and I realised I also called them twin lens reflex cameras. However reflex refers to moving the mirror it's a reflex action as the mirror swings out of the way with a SLR before taking the photo. However with the so called "Twin-lens reflex camera" the mirror seems to be static there is it seems no reflex action. So how did it get the name? I am guessing at one time the mirror did move but when and with what camera?
http://manualesdecine.files.wordpress.com/2012/05/the-camera-ansel-adams-series-no-1.pdf
http://manualesdecine.files.wordpress.com/2012/05/the-negative-ansel-adams-series-no-2.pdf
http://manualesdecine.files.wordpress.com/2012/05/the-print-ansel-adams-series-no-3.pdf
In the first one he makes reference to Twin-lens reflex camera and I realised I also called them twin lens reflex cameras. However reflex refers to moving the mirror it's a reflex action as the mirror swings out of the way with a SLR before taking the photo. However with the so called "Twin-lens reflex camera" the mirror seems to be static there is it seems no reflex action. So how did it get the name? I am guessing at one time the mirror did move but when and with what camera?