Within this photo shoot, I messed around with the exposure settings on my camera to see which number displayed the piece of paper most effectively.Within Photographs, exposure determines how light or dark an image will appear when it had been captured by the camera and viewed. This can be determined through aperture, ISO and shutter speed, which can be located on your camera and seen in the exposure triangle below. However you need a combination of all three to make the perfect exposure. If too little light is let into the picture, it will become too dark and underexposed, and the same with letting too much light into it as the image will become too bright and overexposed.
Daily Archives: September 19, 2017
Filters
Brett Weston Inspired Photoshoot
ISO
ISO measures the sensitivity of the light sensor, which is responsible for gathering light and transforming it into an image. The lower the number the lower the sensitivity of the film and the finer the grain in the shots you’re taking. In darker situations a higher ISO setting is used to get fast shutter speeds.
ISO Speed Example:
ISO 100 – 1 second
ISO 200 – 1/2 of a second
ISO 400 – 1/4 of a second
ISO 800 – 1/8 of a second
ISO 1600 – 1/15 of a second
ISO 3200 – 1/30 of a second
The ISO sequence is: 100, 200, 400, 800, 1600, 3200, 6400 and etc. Each step between the numbers effectively doubles the sensitivity of the sensor.
Contrast and Tone
The Zone System is a technique that was formulated by Ansel Adams and Fred Archer. It is an approach to a standardized way of working that guarantees a correct exposure in every situation, even in the trickiest lighting conditions such as back lighting, extreme difference between light and shadow areas of a scene.I've used the Zone system to edit my own photos so I can get the perfect balance in tones. I used Photoshop to change contrast, hue and saturation to get a wider range of shades to finish with a perfect image with many tones.
Exploring Tone and Contrast
- In this edit, I took the top image and added a black and white filter. I then added contrast and lowered brightness. Then, to make the image more dramatic, I increased the amount of black in the image using the zone system.
- The zone system was created by Ansel Adam and is shown in the bottom picture.
- The zone system shows the amount of white/black in a photo and allows us to adjust it to our liking. It lets us pick a correct amount of exposure every time.
Zone System
The zone system is a system developed by Ansel Adams and Fred Archer in 1939. The system guarantees the correct exposure in every shot.
What is it ?
The Zone system separates the highlights and shadows in a image into 20 different sections so that the fill scale is guaranteed in each shot, buy having the whole range within an image it becomes sharper and more thought-provoking. The scale is measured in Roman numbers and increases from the lightest panel to the darkest
Exploring The Exposure Triangle
The Exposure triangle is a vital part of photography a can have a massive impact on the style of photography that you can access and the quality and levels of the photos that you can take if the triangle is understood and used probably.
Aperture -Aperture controls the iris diaphragm within the lenses which let is sensitive to light and is what lest in the difference amount of light into the camera.
ISO -This controls how sensitive to light the camera is, for daytime you would use a low ISO and for night time photography a high ISO would be needed.
Shutter speed – Controls the amount of time that the sensor is exposed to light for, which can be turned up or down.
Ansel Adams Zone System
Ansel Adams created the Zone system, a process of capturing a series of dark to light tones in an image. This would maximize the effect of an image giving it more drama and allowing each aspect in a photo to stand out for itself.
We edited our own photos with same outcome by removing saturation, altering contrast and brightness and balancing the levels of black, white and grey tones.
Editing Using the Zone system on Photoshop
Black and white tone experimentation
Ansel Adams zone system
The Zone System, was a system of distinguishing between various black to white tones within an image. It provides photographers with a systematic method of precisely defining the relationship between the way they visualize the photographic subject and the final results.
Here are some photographs I have edited in Adobe Photoshop with the Ansel Adams Zone tonal system in mind. 
