Seeing this slide made me make the connection for the first time that the common F-stop values are all powers of sqrt(2), in accordance with the logarithmic scale of exposure. Just thought that was neat.
S-Muddana
I am a little confused as to what it means for the lens aperture to be 'stopped down' to a smaller size. Is this slide essentially saying that although a lens can go to a maximum F number of F/1.4, if it is stopped at F/4, then the resulting photo's F-Number is F/4? Seems logical.
Seeing this slide made me make the connection for the first time that the common F-stop values are all powers of sqrt(2), in accordance with the logarithmic scale of exposure. Just thought that was neat.
I am a little confused as to what it means for the lens aperture to be 'stopped down' to a smaller size. Is this slide essentially saying that although a lens can go to a maximum F number of F/1.4, if it is stopped at F/4, then the resulting photo's F-Number is F/4? Seems logical.