For the Umpteenth Time: Another article on The Exposure Triangle https://petapixel.com/2017/03/25/exposure-triangle-making-sense-aperture-shutter-speed-iso/ Though, in my opinion, I...

rmalarz Loc: Tempe, Arizona

Another article on The Exposure Triangle

https://petapixel.com/2017/03/25/exposure-triangle-making-sense-aperture-shutter-speed-iso/

Though, in my opinion, I think the triangle is not the best way to approach this subject.
--Bob

BebuLamar

rmalarz wrote:

Another article on The Exposure Triangle

https://petapixel.com/2017/03/25/exposure-triangle-making-sense-aperture-shutter-speed-iso/

Though, in my opinion, I think the triangle is not the best way to approach this subject.
--Bob

The triangle is not about determining exposure which is the difficult part. It's about after the exposure is determined how to set the variable to fit that exposure which is an easy thing to do.
People who wrote about the triangle avoid the difficult thing.

CPR Loc: Nature Coast of Florida

The three sided figure may not be the best way to display the three sided relationship but I'm having a hard time thinking of a better graphic.
Perhaps a vertical tube with a line for the required light for that photo and three colored fillings for the tube so they total what is required to fill to the line?????

rmalarz Loc: Tempe, Arizona

As I stated, and I agree with your statement, the triangle is not the best way to explain how all of the elements of aperture, shutter speed, and ISO work together. However, the triangle seems to have become the default method to explain it.
--Bob

CPR wrote:

The three sided figure may not be the best way to display the three sided relationship but I'm having a hard time thinking of a better graphic.
Perhaps a vertical tube with a line for the required light for that photo and three colored fillings for the tube so they total what is required to fill to the line?????

dennis2146 Loc: Eastern Idaho

I don't think the triangle is meant to explain anything. It is simply an easy way to show that three factors are needed to get the best picture. It is similar to the Fire triangle showing fires need heat, oxygen and fuel. There is no specific formula because combustibles such as paper, concrete or gasoline all need different amounts of heat and oxygen to burn. For me this is a simple topic that is much over thought.

Dennis

Rongnongno Loc: FL

rmalarz wrote:

Another article on The Exposure Triangle

https://petapixel.com/2017/03/25/exposure-triangle-making-sense-aperture-shutter-speed-iso/

Though, in my opinion, I think the triangle is not the best way to approach this subject.
--Bob

I was once reading an article that 'debunked' the set triangle formula basically saying the reasoning behind it was broken. I did not bookmark it though...

Edit:
Found this but that is not it...

rmalarz Loc: Tempe, Arizona

It may not be meant to explain anything, but it is taken as if gospel my many.
--Bob

dennis2146 wrote:

I don't think the triangle is meant to explain anything. It is simply an easy way to show that three factors are needed to get the best picture. It is similar to the Fire triangle showing fires need heat, oxygen and fuel. There is no specific formula because combustibles such as paper, concrete or gasoline all need different amounts of heat and oxygen to burn. For me this is a simple topic that is much over thought.

Dennis

rmalarz Loc: Tempe, Arizona

Rongn....., I wonder if it's one of the articles I wrote some time ago.
--Bob

Rongnongno wrote:

I was once reading an article that 'debunked' the set triangle formula basically saying the reasoning behind it was broken. I did not bookmark it though...

Edit:
Found this but that is not it...

Rongnongno Loc: FL

rmalarz wrote:

Rongn....., I wonder if it's one of the articles I wrote some time ago.
--Bob

It was not on UHH...

burkphoto Loc: High Point, NC

rmalarz wrote:

Another article on The Exposure Triangle

https://petapixel.com/2017/03/25/exposure-triangle-making-sense-aperture-shutter-speed-iso/

Though, in my opinion, I think the triangle is not the best way to approach this subject.
--Bob

Agreed. The diagrams are pretty, though.

I just wish the explanation would start with light, THEN go over ISO, aperture, time.

The amount of light available determines the limits on everything else.

dennis2146 Loc: Eastern Idaho

rmalarz wrote:

It may not be meant to explain anything, but it is taken as if gospel my many.
--Bob

I definitely agree. But I think many people try to look at the triangle itself as a recipe for success, meaning it gives exact amounts of light etc. to take a great photo. Of course it only says these ingredients are needed but it is up to the photographer (or camera) to determine how much of each.

Dennis

Linda From Maine Loc: Yakima, Washington

Bob, you stated the triangle isn't the best way to address how the three elements work together. Would you elaborate on what is?

I think that article, like any others I've seen that uses the triangle, is very straightforward. All it is pointing out, via an equilateral triangle, is what their conclusion states:

Combining the ISO, aperture and shutter speed results in an equivalent exposure value for a particular setting. If any one of these elements is adjusted, the resulting image will not be the same...

In other words, if you shorten only one side of the triangle, the exposure is no longer the same. Not that it's better or worse nor dependent upon light or what you want the outcome to be...just different. The equilateral triangle no longer exists.

dennis2146 Loc: Eastern Idaho

Linda From Maine wrote:

Bob, you stated the triangle isn't the best way to... (show quote)

Well put.

Dennis

canon Lee

rmalarz wrote:

Another article on The Exposure Triangle

https://petapixel.com/2017/03/25/exposure-triangle-making-sense-aperture-shutter-speed-iso/

Though, in my opinion, I think the triangle is not the best way to approach this subject.
--Bob

I think a good analogy would be a see saw. When one value goes up the other goes down! An easier way to explain inverse proportions (excluding ISO). So in low light situations; slower shutter means LESS aperture opening . More of one means less of the other..... Perhaps using Manual mode you can have the best of 2 worlds. The exposure triangle is something you learn when just starting out and in time setting exposure is more intuitive, and using the histogram is more practical.

Linda From Maine Loc: Yakima, Washington

dennis2146 wrote:

...For me this is a simple topic that is much over thought. Dennis

Looking through Rongnongo's link, I do believe you're onto something

A different article says, "The exposure triangle is an aid to remembering the three controls and helping photographers to think through the process of setting each of them to achieve the exposure required."

http://www.photokonnexion.com/definition-exposure-triangle/

Just a handy visual aid, and for beginners a way to help remember the properties of each (dof, motion etc). Certainly better than some advice I've seen on UHH: just play with the settings