andytakeone
TPF Noob!
- Joined
- Jun 10, 2015
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- 42
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I don't mean Kelvin or Candles or this kind of thing. I mean:
Let's say you're in a room and it's fairly dim and so you say to yourself, "This is about 20% bright."
Then you go outside and it's almost night time so it's quite dark out, and you decided that there's about as much light as there was in your room, so you also attribute it this "20% brightness."
Is this a reasonable comparison?
Now in this hypothetical situation, 0% brightness would be pitch blackness and 100% brightness would be light that would blow out any picture.
I came to this question by reading a textbook that used a technique where the photographer would give "brightness" measurements to differently lit areas of his photograph, and then expose for the average brightness of that aggregate.
For example, if it was dark in the foreground (30%), and light in the background (70%), he would expose for "50% brightness." (Let's say in this hypothetical, there was no main subject so it wasn't a matter of deciding what you wanted to expose more).
Is this a legitimate way of deciding exposure?
When you walk into a room, do you think in your head "I have to expose for 30%"?
If you're getting 30% light from a lamp and you walk out and you get 30% light from the ambience, do you expose them the same way?
If this is a legitimate way of deciding exposure, do you guys have different exposure combinations and their equivalent exposure settings (for different f-stop/shutter speed combos) ready to switch to?
The main reason I'm asking this is because I still have trouble walking into a room and determining the brightness level and where to start with my settings. Where I'm at right now is that I'll walk into a room or outside and say, "Oh it's kind of dark in here," then I'll open up my aperture and lower my shutter speed in a sort of wild guess, then adjust it by resorting to the light meter.
I wanna stop wildly guessing and want to know how to get to the proper settings, or close to it a bit more methodically.
Kind of a long winded question, but thanks to any who answer.
Let's say you're in a room and it's fairly dim and so you say to yourself, "This is about 20% bright."
Then you go outside and it's almost night time so it's quite dark out, and you decided that there's about as much light as there was in your room, so you also attribute it this "20% brightness."
Is this a reasonable comparison?
Now in this hypothetical situation, 0% brightness would be pitch blackness and 100% brightness would be light that would blow out any picture.
I came to this question by reading a textbook that used a technique where the photographer would give "brightness" measurements to differently lit areas of his photograph, and then expose for the average brightness of that aggregate.
For example, if it was dark in the foreground (30%), and light in the background (70%), he would expose for "50% brightness." (Let's say in this hypothetical, there was no main subject so it wasn't a matter of deciding what you wanted to expose more).
Is this a legitimate way of deciding exposure?
When you walk into a room, do you think in your head "I have to expose for 30%"?
If you're getting 30% light from a lamp and you walk out and you get 30% light from the ambience, do you expose them the same way?
If this is a legitimate way of deciding exposure, do you guys have different exposure combinations and their equivalent exposure settings (for different f-stop/shutter speed combos) ready to switch to?
The main reason I'm asking this is because I still have trouble walking into a room and determining the brightness level and where to start with my settings. Where I'm at right now is that I'll walk into a room or outside and say, "Oh it's kind of dark in here," then I'll open up my aperture and lower my shutter speed in a sort of wild guess, then adjust it by resorting to the light meter.
I wanna stop wildly guessing and want to know how to get to the proper settings, or close to it a bit more methodically.
Kind of a long winded question, but thanks to any who answer.