In the cameras you are using light isn't amplified, never. It's awfully wrong to say it is.
April 2, 2023
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The funny thing is that short article kinda does say that “exposure is how light or dark an image looks.”
That is why I do not shoot Sony. 🙂
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Yes I suppose you could interpret it that way but then it shows that Sony themselves are very confused about what exposure is.
Their comment
"Exposure compensation is an adjustment to the exposure that the camera judges to be appropriate, to make it closer to the brightness you want"
is actually consistent with their definition of exposure shown at the start of the article amount of light coming through the lens onto the sensor.
You can also adjust the lightness of an image by increasing or decreasing the exposure - amount of light that struck the sensor per unit area while the shutter was open.
But that is not saying that exposure is defined as how light or dark an image looks. It is describing the potential effect of adjusting the exposure.
In manual mode, you can also lighten/darken an image in camera without altering the exposure at all by simply adjusting ISO.
Their quotes I posted earlier clearly show that they believe exposure is not how light or dark an image looks.
The inconsistencies and blatant errors in that article confirms that they are mostly written by marketing/sales people or technical writers who do not have the correct understanding of the basic Photography 101 concepts.
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I have a problem with fighting the alleged myth that “exposure is how light or dark an image looks” in the first place. Rule #1 about debunking a myth is to demonstrate that it is a myth. Did anyone actually say that? It is a poorly constructed phrase to my non-native English speaking ears 😉 to begin with. It sounds formulated in a way to make it easy to be attacked.
If you fix X and Y, etc., exposure does determine lightness. It is a factor but not the only one - but who objected that?
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I would say that even with a minilab exposure doesn't determine lightness because auto-lightness is a part of the process, in other words, not everything is fixed.
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DonaldB has posted in other threads words to the effect that exposure is how light or dark an image looks on the medium the image is being viewed on.
To determine lightness you need aperture, shutter speed and iso, 3 things not 2.
To determine exposure - amount of light that struck the sensor per unit area while the shutter was open - you need scene luminance, aperture and shutter speed.
Once you differentiate exposure from image lightness everything should become clearer and easier. It's when you use them interchangeably that heads begin to spin trying to reconcile the fact you can alter the lightness without altering the exposure.
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There are two ways to handle ignorant/trolling members: you block them (DPR way), or you continue debunking their ridiculous posts. Do you know of a better solution? Ignoring is not a solution, as that would spread the "alternative facts."
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I would love to see the ignore option here. It makes browsing easier. Also, keeps the people with a lot of ignores less active by not engaging them.
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I still don't know. From exposure to microphones to a yacht. That's quite a traversal. I'm still trying to work out how building a yacht proves that your ideas on photography are right.
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Maybe it was your use of the word fathom. Free association time.
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Good spot! Though if that was the case, shouldn't he have built a submarine?
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That would be a different poster:
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Proper action depends on circumstance. I rarely ignore anyone, because then I don´t know what nonsense they might be spewing about me. But once it turns into full on spam, I would chose it as e better solution. Donald with Danno just reached that level for me.
I do not believe the solution is in debunking their nonsense, because you can only do so much in your life, and time is precious. :-) -
And yet you keep reading this thread and posting in it.
Post a link to any of my posts that in your opinion contains nonsense that should be debunked.
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whats the value of the scene luminance ? guess ! or do you use the incamera meter which iso is read and set manually or automatically. agree ?
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It obviously depends on the scene.
If you need a refresher on how I set exposure* you can find it at dprevived.com/t/why-are-my-photos-noisy/754/
You are quoting statements that are not even correct because the light is not amplified in the camera.
If you need to be taken seriously, post where you think the light is being amplified in the camera.
* exposure - amount of light that struck the sensor per unit area while the shutter was open
** optimal exposure - the maximum exposure* within dof and motion blur requirements without clipping important highlights.
*** under exposed - more exposure* could have been added with the DOF and blur constraints still being met without clipping important highlights. -
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I don't need a light meter to set exposure* as described in the post I linked to.
You are quoting statements that are not even correct because the light is not amplified in the camera.
If you need to be taken seriously, post where you think the light is being amplified in the camera.
* exposure - amount of light that struck the sensor per unit area while the shutter was open
** optimal exposure - the maximum exposure* within dof and motion blur requirements without clipping important highlights.
*** under exposed - more exposure* could have been added with the DOF and blur constraints still being met without clipping important highlights.
