Originally posted by southlander I'm a fan of the 40mm equivalent (or thereabouts) FOV as well. It was a popular focal length on 35mm fixed lens cameras before zooms started to enter the market. If your eye for images has been strongly trained by using 50mm 'normal' lens on 35mm, the 35mm on crop sensor will suit your style and you may regard this as the 'new normal'. If your eye has been developed on fixed lens cameras (as mine seems to have been), then 28mm on crop sensor is of greater appeal as it equates to 42mm on film. There's no right or wrong answer - it's a matter of personal preferences and shooting style. If you go back to screw mount days, the 'normal' lens was once 55mm, and then the view of 'normal' came down to 50mm over the years. As others have said, true normal on 35mm is a 43mm FL lens eg so it could be argued that Pentax was the only company that ever built a lens for the purist, ie the FA43.
Sorry to contradict you, but if you read my other comment you will see that associating FL to normal view or not is not correct but instead you may think of the AoV that outcomes from that FL plus sensor size.
In 135 format (24x36mm), the diagonal of the sensor has 43mm. so, using a FL 43mm assures an image with
normal perspective (does not compress the edges or expand the center) but never a normal view.
Normal view is associated with the angle of view of the human eye, which is about 40° (20° to each side of our nose). After those 20°, the eyes ability to detect detail / color and contrast are drastically diminished BUT this may vary from eye to eye. So normal view is kind of subjective or at least, depends of each pair of eyes.
All this said, you are down right. Depends on what each of us is used to see as normal. But using a FL that equals the diagonal of a sensor should not be associated with view, but perspective.
regards,
Francisco