Hi, you've misunderstood. I'm not suggesting any changes to the laws of physics. I'm suggesting a simpler user interface to the laws of physics, eg:
Label f-stop 1 90 2 64 3 45 4 32 5 22 6 16 7 11 8 8 9 5.6 10 4 11 2.8 12 2 13 1.4 14 1 15 0.7 Label the lens as indicated. Then the number gets bigger when the hole gets bigger. That's all. 99.99999% of people using cameras don't need to know anything about the f-stop system, and the f-stop system confuses people when they're trying to learn to use cameras. --- Bob Monday, November 25, 2002, 11:27:41 AM, you wrote: > On Mon, 25 Nov 2002 09:04:48 +0000, Bob Walkden wrote: >>Hi, >> >>good story, but it's the wrong analogy. I'm not suggesting a change to >>the f-stop system I'm suggesting a different way of labelling lenses. > That would be like changing the way you rate electrical appliances. > It's all based on a system of maths and physics and as everyone knows, > you can not change the laws of physics. Even if you changed to > imperial measures for focal length and labeled a 50 mm lens as a 1.9685 > inch lens, f2 would still be f2 because it is a ratio. f1.4 would still > be one stop faster than f2 because of the maths involved. If you try > and reverse the order so a small aperture hole gives a small number you > loose any relationship to what it really means and you make creating > tables a near impossibility. > Optics is a science and science relys on physical relationships to > produce repeatable results. If you don't want to learn the science > that's fine, but don't expect science to change just for you. > Leon > http://www.bluering.org.au > http://www.bluering.org.au/leon
