Finder said:
Sorry, Bill, your "system" also requires "guessing" to use the meter "properly."
No, it doesn't, and you don't know what my system is.
And expereince does work. If I turn a hundred watt light bulb on in a room and make a correct exposure, then I can be sure that the exposure will be the same the next time I go there again. If I switch the bulb to 200 watt, I can adjust the exposure to compensate without the need for metering.
Only if you know the bulb is now 200 watts. But you won't, because it will seem the same relative brightness to you if you walk out of the room and walk back in a week later, or if the value of the bulb is gradually changed while you're in the room - that's how our minds work - we compensate.
Ask yourself this - why do we need white balance on digital cameras and color-correcting filters or special film for various kinds of 'white' light?
It is because the sensor (digital or film) is not fooled about what color the light it. Our eyes, on the other hand, are. We see light we expect to be white as if it were white. The only time we notice that the white light of an incandescent bulb is not white at all is when compare it to something that is shedding white light.
We say "Oh, the digital sensor in my camera was fooled about the white balance in the room."
No, it wasn't. The camera did not agree with you about what 'white' is, because white to it is an objective standard, and to your eyes, white is whatever your mind expects it to be.
Eyes are easily fooled. It is not your fault, it is how we are made.
Your "guessing" argument is too simplistic as the estimate is based on experience not just random stabbing in the dark. The other problem is people do estimate exposure and are sucessful.
They often achieve an exposure that they find acceptable. This is fine if that is what they want. However, if one tries to describe that as taking creative control, it is incorrect. It is getting better at pitching horseshoes, is all.
Also people do use their meters "properly" and do not make good exposures. So your assertion that metering is the only method that works is not supported by reality.
Yes, it is. I can guarantee you that if I have a 1 degree spotmeter that is working properly, and you have your eyeballs, I can select the exposure I want to the edges of the ability of my film to reproduce - you cannot.
You can achieve (possibly) an acceptable expsure, in that the lights and darks may well be recorded faithfully in an average way. Or you may occasionally blow out highlights or lose detail in the darks - a scene's dynamic range often exceeds the latitude of the media we use to record it with.
And that is where I will prevail. Given that something will not be recorded, some detail will be lost, with a proper meter and my knowledge of how to use it, I can choose just what will be lost and what will be kept. You can only aim for the middle and hope, or bracket.
Anyone who guesses their exposure feels they can point at a photograph in which all the elements are exposed without detail being lost and say that this is proof they can do it. But give them a scene with EV values from 3 to 16, and let's see how they do. No matter what, some detail will be lost. How will the guesser decide what to lose and what to keep?
To measure anything, you first need a standard to compare it to. It does no good to measure a board of unknown length with another board of unknown length. One must first set a standard and then compare everything to that. Meters give known values that can be used as standards if they are working correctly and understood properly. Eyeballs do not.