The Beginners Questions Area

well yes it is

Did you just find out ? its been known for years 20,000 post as DonaldB 1200 as dspider and 1400 as river photography. everyone got the sh..ts when i switched to sony FF after years shooting pro with olympus.

What is the meaning of the word exposure you used in your question below? because in other threads you said that exposure was how light or dark an image looked on the medium it was being viewed on.

In another thread you posted

oh i see so we have an exposure triangle. exposure= shutter +aperture+ scene luminance, is this correct ? and i want a BIG YES 🍻🍻

If it’s the amount of light that hits the sensor then it doesn’t matter where it comes from. More light is more light. And all light on a subject is reflected light (unless you’re photographing a light directly). The more of it, the greater the exposure (everything else being equal).

That’s a weird “gotcha” attempt.

Good, we got past the semantics, and we can agree I think, that a rule of thumb method can be useful, but it is better to learn the correct technical details.

We need to separate "beginners" into two simple categories, but with shades of grey in-between. Those who just want get better pictures than they get with their cell phone, and just need a few simple "rules" to get by, and those who want to understand fully the medium, who are maybe studying photography academically .

Maybe some of you guys can give me a good simple explanation on how we should get my first category started and of course why.

I spend a good part of my working life trying to explain very complex engineering concepts, to non technical people. It is not easy.

And the funny thing is, that it didn't work and DonaldB is only making a fool of himself again like he did in his Raw histogram thread.

Aperture, shutter speed and scene luminance affect exposure*

What is the meaning of the word exposure you used in your question below? because in other threads you said that exposure was how light or dark an image looked on the medium it was being viewed on.

In another thread you posted

* 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.

Yes, only now. I was giving you the benefit of the doubt.

I don't know what your are trying to prove other than you can be ambiguous is some attempt in proving something.
I don't think anyone ever said scene luminosity was not part of exposure.
What you fail to see is that the size of the exposure that caused the noise and the raising of the iso did not just as your images show

to set exposure in my studio requires 3 settings then period, which part dont you guys understand ? in my books i use 4 and when i hold workshops i explain 4 setting not 2 not 3 but 4. i stick a diffuser in front of the lights and thats 5 now .

Fixed it for you 👍

* 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.

Where on my external meter do I add diffuser, and show me where on my cameras metering system do I enter the diffuser I am using
Throw enough crap on the wall and you will find that some of it is correct, but it takes a lot of crap to find reality

the light didnt cause anything the sensor recorded the light and its responsible for the noise. noise is electronic not "photon noise" it there photon noise anyone. brains trust needed here.

I think everyone posting here understands exposure just fine. Including you and the people you seem to be arguing with. You’re all volleying semantics games back and forth like everyone did at DPR for years. But if you all enjoy it, that’s fine. Different strokes for different folks. Just mutter the word “exposure” over there and it was a guaranteed 150 posts and locked thread. Only difference here is no cap.

wow you dont know how much light is diffused every layer. thats not my problem as most of my diffusers have multi layers at 1 stop per layer. does your light meter meter 7 lights at any 1 time ? my eyes can.

There are 2 main types of noise - shot noise and read noise as explained at Why Are My Photos Noisy?

what i dislike is the selective double standards of meanings. from some photographers. and as you said its on forums. go to any photograph club any workshop and the exposure triangle is gospel .