Another Stupid question. For All Point and shoot compacted Canon Cameras and EOS-M----The Kit Lenses that come with the cameras that have the MM. Print on the front of lenses such as 22 mm, And My Lovely Canon SX 160 IS = 5.0- 80 mm.------That number of MM. must Multiply by 1.6 Lens factors for real life situation = Right ?.
If It right---- all the Camera company must lie to us 5.0-80 mm are not right any more , must be = 8 - 128 mm. in the real situation of the shooting.
Thank you, Sir/ Madam.
The 'crop factor' depends on the sensor size, relative to FF. For example, the PowerShot S100/110 have a 4.6x crop factor. They aren't lying, though. If they printed 24-120mm on the lens of the S100, that would be a lie. 5.2-26mm is the actual focal length of the lens. Focal length is 'measured' as the physical distance between the lens' exit pupil (an optical point that may or may not be within the physical space occupied by the lens, depending on the lens design) and the image plane (where the in-focus image from the lens is projected), with the lens focused at infinity. So, focal length is an intrinsic property of the lens, regardless of the sensor size.
Thousand Thanks, to my Dear Great Teacher Mr. neuroanatomist
You teach me again this morning.
Yes, If I do not know, and do not want to ask, That will make me more stupid in my whole live.
Have a great weekend, Sir,