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After we learn about exposure triangle, to make more clear about it, i post this article take from wiki. yeah, the aperture definition, and all about aperture.
here it is.

In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are, which is of great importance for the appearance at the image plane. If the admitted rays also pass through a lens, highly collimated rays (narrow aperture) will result in sharpness at the image plane, while uncollimated rays (wide aperture) will result in sharpness for rays with the right focal length only. This means that a wide aperture results in an image that is sharp around what the lens is focusing on and blurred otherwise. The aperture also determines how many of the incoming rays are actually admitted and thus how much light reaches the image plane (the narrower the aperture, the darker the image).
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The triangle of exposure is a useful way to describe the relationship between the three aspects of exposure. Each vertex of the triangle represents one of the three variables, aperture, shutter speed and ISO. Adjust only one will make the picture darker or brighter and will alter the appearance of the picture based on what you changed. For example, using a longer shutter speed will introduce motion blur in your photo, but also make the picture brighter (increased exposure) due to more light reaching the sensor. The easiest way to understand is to see the image.
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oke, after you have to be a cool photographer, now you can score yourself. What is my level??

Artist: Top Level 7 (equivalent to “Heaven” in Christian mythology)

This is the highest level.

An artist fixes his imagination in a tangible form called a photograph. He captures the spirit of place or person, real or imagined, in this photograph and the viewer responds to this.

An artist is a complete master of his tools. When creating art an artist transcends common existence as his spirit flies up to meet that which he is capturing. He may practice and learn his tools while he is not creating, however when creating the camera becomes an extension of his mind. No conscious thought is expended on the technical issues with which he is a virtuoso while creating photographs.

To make a musical analogy, a musician may woodshed his scales, but when he’s jamming he’s not even thinking about fingerings. He’s lost in the passion of the moment.

Just like professional surfers who have a dozen boards or pro guitarists who have 23 axes, an artist may have a slew of cameras, each for a different purpose.

Likewise, other artists may only have one camera, or none at all. It just doesn’t matter.

Artists sometimes dress funny and tend to stay up late. They usually prefer to photograph attractive young women and are proud of it.

No one ever sees their work since they have crummy ability to promote themselves, and sadly, usually don’t even appreciate their own excellent work. Those that do drop down to Whore, which sadly and paradoxically means you will never see the work of a true artist unless you know one personally. Good artists are usually too embarrassed to show their work to anyone unless you are intimate with them, since their work is their soul.

Artists use any sort of camera, including pinholes and disposables, or 8 x 10s. They use whatever instrument they need to create what they want. Read the rest of this entry »

Here it is, how to bee the cool photographer.
1. The first rule of a cool photographer: Do NOT show your photographs.
2. The second rule of a cool photographer: Do not show your photographs! If somebody asks you to show them – make an excuse. Tell about terabytes of raw images on your computer, being busy, copy and other rights, agreements with “Harper’s Bazaar”, “Esquire”, and other fancy magazines and advertisement agencies.
3. If you have a blog, post there a few photos of renown photographers with moderately positive comments such as “That’s how one should do it!”. Theorise a lot!
4. As an exception, you can post 2-3 abstract-looking photos with a note “I am just fooling around” or “these are my juvenile experiments”. No more than that! Read the rest of this entry »

Photography is the process, activity and art of creating still or moving pictures by recording radiation on a sensitive medium, such as a photographic film, or an electronic sensor. Light patterns reflected or emitted from objects activate a sensitive chemical or electronic sensor during a timed exposure, usually through a photographic lens in a device known as a camera that also stores the resulting information chemically or electronically. Photography has many uses for business, science, art, and pleasure.Lens and mounting of a large-format camera.A historic camera: the Contax S of 1949 — the first pentaprism SLR.Nikon F of 1959 — the first 35mm film system camera.Late Production Minox B camera with later style “honeycomb” selenium light meter.A portable folding reflector positioned to “bounce” sunlight onto a model.

The word “photograph” was coined in 1839 by Sir John Herschel and is based on the Greek f?? (phos) “light” and ??af? (graphé) “representation by means of lines” or “drawing”, together meaning “drawing with light”.[1] Traditionally, the products of photography have been called negatives and photographs, commonly shortened to photos.

That’s the definition of photography, and now, what about digital photography?

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