it is said that full frame aperture equivalent of 2.8 to aps-c is 4.2. does it mean that shutter speed of aps-c is one stop slower that full frame on the same aperture? given the same focal length equivalent e.g. aps-c 23mm and ff 35mm.
it is said that full frame aperture equivalent of 2.8 to aps-c is 4.2. does it mean that shutter speed of aps-c is one stop slower that full frame on the same aperture? given the same focal length equivalent e.g. aps-c 23mm and ff 35mm.
For the same lens?
The f stop is the relationship to the apparent aperture opening (as looked at through the front of the lens) and the focal length of the lens. This doesn’t matter if it is on a crop sensor, full frame sensor, medium format sensor or just sitting on your desk not connected to a camera as looking through the front will always give you the same size for the same fstop.