Archived posting to the Leica Users Group, 1997/08/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In einer eMail vom 12.08.1997 19:46:09, schreiben Sie: >The notion thet the 'normal' angle of view of the view is equal to that >of the socalled standard lens, is believed by almost everyone. It is >however false. Look at any physics or science book and you will find >the true scientific figure: the eye has an angle of view of 120 degrees! >As anyone who looks straight ahead can ascertain for him/herself. >A 90mm lens indeed gives a perspective that is pleasing for the eye, but >the real focal length of the eye is 17mm. Although true - however uncomplete (physiologically and according to perception-psychology - sorry, you touch my territory now): The angle, which allows the human eye to focus an object as __sharp__ agrees to the angle of the usual standard lens, which is generally defined by the angle, neither by the diagonale of some format or the focal length or anything else, like peripheral view. Besides, it would be rather suspect to imagine the visual input based on a rectangle or square. Still, the perspective of the human perception agrees to the transformation which is given by the 90 mm in 35 mm format. - -Alf