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252
votes
Accepted
What is the "exposure triangle"?
"The Exposure Triangle" is a catchy phrase meant to encompass the three factors which affect the exposure of a photograph of a scene with a given amount of light. … The problem with the phrase "exposure triangle" is that the relationship between these three factors does not actually share any of the properties of a triangle other than "threeness". …
156
votes
10
answers
62k
views
What is the "exposure triangle"?
What is the exposure triangle? How do the "sides" affect my photographs? …
63
votes
What is the "exposure triangle"?
The exposure triangle refers to the three major settings that effect exposure:
ISO
Aperture
Shutter Speed
Digital Photography School has an excellent write up about this, but I will summarize as … As the name suggests, each element effects image exposure, or how bright/dark the image is. …
48
votes
Accepted
Do I have to shoot a whole film roll on the same ISO?
What is the "exposure triangle"? …
44
votes
Accepted
Manual photography cheat sheet — where can I find one, or what should be on it?
Since there are 3 important variables here: aperture, shutter speed and ISO, I would Google for Exposure Triangle Cheat Sheet for example. … Here are a few:
Manual Mode Cheat Sheet (Muddyboots Photography Blog)
Exposure Chart Cheat Sheet (Flickr)
My Exposure Triangle Cheat Sheet (glark.org)
My Exposure Triangle Cheat Sheet (glark.org …
36
votes
Is there a sane reason why ¹⁄₁₂₅ is not, instead, exactly half of ¹⁄₆₀?
The largest variation in the exposure triangle between actual and theoretical numbers with most DSLRs is ISO sensitivity. …
31
votes
What is the "exposure triangle"?
Of course it is true, 4 parameters are too many for a triangle, but here is my try:
Imagine you print this colored large triangle on a thick cardboard:
Then you print these 2 images, preferrably on … So this is actually a quantitative exposure triangle, that can tell you the exact relation between the 3 (or 4) parameters of exposure. …
27
votes
Accepted
What do I need to consider to choose between dSLR, mirrorless, or a compact as my first "ser...
These three features are, in order of importance:
Full Manual mode, so you have full control over exposure. … (See also, Bryan Peterson's book, Understanding Exposure and What is the "exposure triangle"?).
RAW capability. …
22
votes
What's the difference between exposure and shutter speed?
This is the sense used in the common phrase "exposure triangle" (which I don't recommend, but for other reasons).
The amount of light allowed to to fall on an area of the sensor or film. … Raising the exposure (or exposure value) doesn't really make any sense in that context. …
22
votes
Accepted
Does it make sense for me, as a beginner, to buy a speedlight?
And, if you don't know how to stand yet (exposure triangle mastered; comfortable in M mode), that must be solid before you can start learning flash. … Because while ambient-only exposure is juggling three balls (iso, aperture, shutter speed), flash+ambient exposure is juggling five (iso, aperture, shutter speed, power, and distance), while riding a unicycle …
21
votes
Accepted
What is the relationship between ISO, aperture, and shutter speed?
The Exposure Triangle
The "exposure triangle" is a term popularized by photography author Brian Peterson for aperture, shutter duration, and ISO. … You can read much, much more about this at What is the "exposure triangle"? …
18
votes
4
answers
30k
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How do I predict exposure when using flash?
So I've got the basics down for the exposure triangle, but sometimes you just need to add more light to the room and the flash can be the most convenient way of doing that. … The problem is that the exposure on the camera is not taking into account the extra light from the flash. …
18
votes
Accepted
What are the benefits of the classic f-number scheme?
For a given intensity \$I\$ on the subject, we set our camera's exposure settings to correctly expose the subject. … Because f-number \$N\$ is inversely proportional to aperture diameter, the constant exposure relation is now a product rather than a ratio: \$N\cdot s\$. …
15
votes
What is the "exposure triangle"?
While the other answers explain the concept of exposure triangle quite well, exposure triangle has the downside that it gives impression you only have three variables to control exposure - shutter speed … Exposure triangle gives the false impression that you may not bring your own pen. …
15
votes
Accepted
Adjust exposure compensation in manual mode?
This question tells me you should start by understanding exposure first. Start with reading about the Exposure-Triangle. … If your camera has dual control-dials, EC either does nothing or shifts the Exposure-Meter which can be used as a guide to set Manual exposure. It does not affect exposure in this case either. …