TsurTriger
New member
I noticed that some lenses have deference focal length but produce the same angle of view. I don't get how it is possible.
For example:
Schneider Apo - digitar 4.0/80 L produces AOV of 53deg
Schneider Apo - digitar 4.5/90 N also produces the same AOV
Schneider Apo - digitar 5.6/100 N the same also.
Rodenstock HR Digaron-W 5.6/90 produces AOV of 70deg.
How can it be possible?
For example:
Schneider Apo - digitar 4.0/80 L produces AOV of 53deg
Schneider Apo - digitar 4.5/90 N also produces the same AOV
Schneider Apo - digitar 5.6/100 N the same also.
Rodenstock HR Digaron-W 5.6/90 produces AOV of 70deg.
How can it be possible?