skylane5sp wrote:
Thank you.
Aperture Priority, f5.6, 1/320, ISO 100, 0 exp bias, 300mm(450@35)
I didn't tweak exposure at all, no PP either. It really was this dark and foreboding. Lots of wildfire smoke in the atmosphere. Did you say underexposed because it appears so dark? I'm NOT arguing, just trying to learn and understand.
Can I assume that for the most part, the camera knows what it's doing? In other words, if you don't compensate exposure at all, is this WYSIWYG?
If you auto exposed without any compensation just on that sky area (without the sun in it) your image would be much lighter.
It would expose to 18% grey.
Because the strong falling sun is in your image, the exposure meter has been influenced by that and darkened the shot considerably - thereby darkening the rest of the sky and darkening the ground.
Your sky was not this dark, nor was your ground.
You would have been able to see detail in what is shown as a silhouette here.
I am not saying this is not a reasonably accurate depiction either.
It may be how you remember seeing the scene.
If you looked at the sun with your eyes, apart from being temporarily blinded, this would be how you saw the scene.
Our eyes cannot see a scene exactly as the camera does.
We have a different dynamic range than the camera. Our eyes have a larger range and will also constantly take in information and adjust and then our brain will join all the information together and send us an image. And it will do this on the fly.
It is not a case of - if you don't compensate exposure that your camera records the scene exactly as it is.
It cannot do that.
In ordinary normal light it can give a reasonable approximation of that - if we choose an exposure point that is close to 18% grey.
But if we are photographing something predominantly dark - the camera will take it too light.
And if we are photographing something predominantly light - the camera will take it too dark.
If we are photographing a scene with a mix of darks and lights - the image will be produced at whatever exposure we set it (it may be auto, it may be manual, that doesn't really matter), and even though we may think it has reproduced the shot accurately, it could well be that our shadows are darker than they were, and our sky is lighter than it was.
Yes, this does seem contradictory to the dark scene/light scene example in the previous point, but it just shows what a juggling match exposure can be.
The camera is never right, the camera is never wrong.
The camera just takes the image how we set it, or allow it to set itself.
Our eyes can selectively lighten and darken a scene. A camera cannot do that. There will always be a trade off, an averaging.
This is why people use graduated ND filters, or HDR, or exposure blending- to get the best approximation that they can, of the scene that was presented in front of them.
It is up to us, as photographers to decide at what level we want the exposure to be, taking into account all the trade-offs involved, taking into account all the deficiencies of the exposure system and limited dynamic range, to decide how we want the image to be presented.
To hopefully even understand and take advantage of those deficiencies to produce an even more remarkable image than the scene presented.
Sunsets/sunrises are a perfect example of this opportunity, and so are silhouettes.