(ссылка) фото-мифы

There are a number of general statements about photography passed off as “the truth”. They are repeated again and again in introductory texts about photography and on the Internet. Repetition, however, doesn't make a false statement true. Here are the most common myths I've encountered:
Autofocus works by measuring the distance to the subject
Unlike linear polarizers, you don't have to turn circular polarizers
A 50 mm lens on 35 mm systems is called “normal” because it delivers about the same view as the human eye
Infrared films record thermal radiation
Wide-angle lenses distort the image
Flash range is increased when using positive flash exposure compensation
The shorter the exposure time, the faster the shutter
Different focal lengths create different perspectives
Tele-photo lenses have a shallow DOF
Macro lenses are only sharp at close distances
Digital cameras have a deeper DOF than film cameras
Medium format lenses have a higher resolution than 35 mm lenses
Using a TC results in different DOF than using a longer base lens
Depth of field around the focus distance is 1/3 towards the camera and 2/3 away from the camera