Bmattock, you seem to be under the illusion that people who dont use a meter for periods of a shoot, don't know what the exposure should be. Hence your scathing contempt for them. This would be indeed foolish behaviour. But they can't all be fools, so maybe they know...
A) No, that is not what I believe, hence it is not an illusion.
B) No, you do not know what the exposure would be.
C) Yes, I have scathing contempt for people who are intentionally moronic.
D) Yes, they can all be fools.
First, there is no such thing as
'what the exposure should be'. There is only the exposure that you want - if you are choosing to take control of your exposure. Let me explain, since this seems such a difficult concept for many.
Let us say that you are using an auto-focus camera, and the camera locks on to a part of the frame which is NOT what you wished to be in focus. So you attempt to finagle and fiddle with it until it locks onto that which you did wish to be in focus. And then you note that despite its insistence, you disagree that focus has actually been achieved. So you disengage AF and you take control of focus, and you focus as you feel correct. You have the reliance of your eyes, and if eyes are not very good light meters, they are very good judges of what is in focus and what is not (if your eyes work correctly, anyway).
Now, which focus was 'correct'? The answer is that there is no
'correct' focus. There is only the focus you want. That is
'correct' in the sense that you want it. But there certainly is no objective standard for correct focus in a scene where multiple objects might be selected as the focus point.
In a similar situation, you apply creative control to your aperture and shutter speed selection. As an experienced photographer, you know that when you take a photo of a moving object, you may want to speed up the shutter and hence open the aperture to freeze the motion. Or, you may wish to do the opposite to enhance the motion blur for your creative purposes. The camera, though many are quite clever these days with pre-programmed settings, does not know what it is you want. So you take manual control and you set the shutter speed and aperture you wish (these days you may also manipulate the ISO if your digital camera permits that).
Now, which aperture was
'correct'? The answer again is that there is no
'correct' aperture, there is only the aperture that you wanted for the effect you desired.
Exposure is different in only one way. Both focus and creatively manipulating shutter speed / aperture are quite easily done by the human eye and mind. We do in fact have eyes adapted to detecting sharp focus, and we do indeed have minds capable of remembering details of, for example, shutter speed to show motion blur on an airplane propeller to a degree we find pleasing. But exposure is outside the competency of the human eye / brain combination.
I am not referring to common tables of exposure, collectively known as
'Sunny 16', which people can carry with them or memorize if they wish. Those will do for some situations, and will produce results that probably won't be too horrible some of the time. And if that is all the creative control one wishes to exercise over one's photos, then that's fine, and I have no argument with it.
I continue to exhibit surprise that so many people are so interested in the OTHER aspects of creative control and completely abandon the art of exposure, however.
Given an example situation as before, where the camera selects an exposure setting we disagree with (and how many people have agreed with me by stating exactly this) or an incident meter reading which people override because they feel the
'meter lies' or the
'meter is less accurate' than their own eyes, I have to wonder how it is that people who clearly agree with me - don't agree with me. It is not the meter that is inaccurate. It is giving a reading based upon its limitations and the fact that it cannot read one's mind and know what one intends the exposure to be. Given that our minds can conceive of what the resulting print should look like, we need a tool that tells from where we are starting.
The clearest example I can give is to ask someone to tell me prevailing EV is as if they were an incident light meter. Then have them go into a movie theater for several hours and re-emerge and tell me again. No one can do that, and no chart will help you. Your eyes are not light meters, they were not built to do that and they do not do it.
If I wish to take creative control of my exposure, I must meter. There is no other alternative. And further, I must use a spot-meter, as an incident or reflective meter cannot give me the degree of accuracy I need.
I rely upon a spot-meter because my eyes are not one.
I need to know several things. The first is what the EV of the darkest part of the scene is. The second is what the EV of the brightest part of the scene is. Having obtained that information with the spot-meter, I then need to determine what the latitude of my recording media is, and what the darkest area of the scene in which I wish to hold detail is, as well as the brightest. It may be a case of intentionally losing detail in one end or the other, or some in both ends, if the dynamic range of the scene surpasses the latitude of my recording media. But it is under my complete control.
I can say at that point that yes, I know the exposure. I won't say I know the correct exposure, because there is no such thing, no objective standard by which to judge.
Now, I realize full well that most people can't be arsed to take this level of manual control over each and every one of their photographs. I don't do it myself. But I also often rely upon auto-focus, or aperture-priority AE, or the exposure that the camera has chosen (the histogram is very nice for this). All of these things will generally work to a degree I find acceptable in many cases. I give up creative control of these features in exchange for convenience, or expediency, and I'm happy with it. If others are too, then yay for them.
However, as we discuss the relative sharpness and definition of the latest uber-sharp lens, or the dynamic range of the latest digital sensor, or the graininess of some B&W film, or the merits of this developer's accutance over that one's, the art and science of using a meter correctly to obtain proper exposure (which is not 'correct' exposure, it is the exposure one intends) ought properly to be in the mix.
The part that amuses me no end is the sneering dismissal of a meter and its use by people who obsess over every other aspect of their photography. They claim to want manual and full control over everything, and then utterly disregard proper metering in favor of ... guessing.
Yes, sir, those people are idiots. Because they are smart enough to understand my little treatise, but they choose to ignore it, and remain ignorant intentionally. Do I sneer at them? You bet I do. What a pack of morons.
And yes, sir, they can ALL be wrong. There is no reason on earth that if everyone believes something, it must therefore be true. They are all wrong.
I've said all this before. It's as clear as I can make it. If anyone bothers to respond to it, it will be a series of accusations that I have said something which I did not, or exaggerations of what I have said to make it appear I'm wrong, or flat-out statements that they indeed CAN meter accurately with their eyeballs (which is not correct). So we go nowhere. It's the simplest thing in the world. You use tools which measure to measure things that you wish to have control over. A ruler is needed to cut boards to length because we cannot judge distance well by eye, and a light-meter is needed because we are not good judges of relative brightness.