I agree, TLRs and other waist level cameras often fly under the radar. Olde folders often do to to a certain extent too.
Nothing beats the hidden camera method that Walker Evans used for three years on N.Y. subways. He made some of the most remarkable candid photos that were ever made, and in all likelihood ever will be made. Of course it helps to be Walker Evans, but his method enabled the ability to make the wonderful pics.
One could spend all day in a studio with a camera with these people and never photograph the true character that he discovered in his photos.
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