By changing the IOS level I found I had to change my shutter speed so my image wasn’t overwhelmed with light or lacking light. I did notice a change in my images. The ones with the lower IOS were sharper and less grainy and less noisy.
I decided to use the same subject in the majority of my images because I wanted to show the difference between the IOS levels and how it affects the camera.
The rule is as you increase IOS, decrease shutter speed. (eg. From 1/25 to 1/120)
ISO:
ISO simply stand for International Organisation of Standardisation. Changing the ISO of a camera controls its sensitivity to light, helping to manage the exposure of an image and prevent under and over-exposure of frames.
Changing the ISO changes the cameras sensitivity to light and can therefore allow for clean frames in lighter and darker places. The lower the ISO the lower the sensitivity to light, and vice versa to higher the ISO the higher the sensitivity to light will be. One downside to ISO is the higher the ISO the noisier or grainier an image becomes, as displayed below.
http://www.digitaltrends.com/phtotgraphy/what-is-iso/
Examples of my experiment in indoor lighting:
Settings: 200, 5.6 ISO 100-6400
Examples of my experiment in outdoor lighting:
Settings: 200, 5.6 ISO 100-6400
As shown in these frames as the ISO increases with each image the quality of the picture is reduced and seems more pixelated, this is often referred to as ‘noise’. Changes in ISO can allow photos to look more natural and visible, however the negative effect of a high ISO can sometimes defeat the object of changing the ISO.
However many photographers have used a high ISO to their images on purpose, in order to create the grainy effect.
What is White Balance?
‘White Balance means adjusting the colors so that the image looks more natural. We go through the process of adjusting colors to primarily get rid of color casts, in order to match the picture with what we saw when we took it. We do this because most light sources (the sun, light bulbs, flashlights, etc) do not emit purely white color and have a certain “color temperature“. Proper camera white balance has to take into account the “color temperature” of a light source, which refers to the relative warmth or coolness of white light. Our eyes are very good at judging what is white under different light sources, but digital cameras often have great difficulty with auto white balance (AWB) — and can create unsightly blue, orange, or even green color casts.’
Definition taken from: https://www.cambridgeincolour.com/tutorials/white-balance.htm
Video Explaining What White Balance is:
Experimenting with the White Balance, Inside and Outside
The first eight photographs where taken indoors, where I used every White Balance mode there was on my DSLR. These images consist of artificial lighting, produced from the ceiling lights, due to this it makes the difference in White Balance a lot harder to recognise. However, the last eight photographs have been captured outside using natural lighting. This has allowed the different White Balances to be seen clearly.
Renger-Patzsch was born in Wurzburg on June 22, 1897 and passed away on September 27, 1966. He began making photographs by the age of twelve. After military service in WW1 he studied chemistry at Dresden Technical College. In the 1920’s he started working for the Chicago Tribune as a press photographer. He then left, and in 1925 he published his first book ‘The choir stalls of Cappenberg’. He had his first museum exhibition in 1927.
He released a second book in 1928 called ‘Die Welt ist Schon’. This is his best-known book, its a collection of one hundred of his photographs in which natural forms, industrial subjects and mass-produced objects are presented with the clarity of scientific illustrations (a visual approach to a scientific concept in a precise, clear and objective way). He believed that the value of photography was in its ability to reproduce the texture of reality. His archives were destroyed during WW2, and in 1944 he moved to Wamel, Mohnesee, where he lived the rest of his life.
My response:
In these photos I tried to to capture bold shapes like Albert Renger-Patzsch. I made all of them black them black and white to match the style, I also increased the contrast and decreased the brightness on some of the photos to bring out the shadows more which makes the shapes bolder. I also cropped the 1st and 3rd photos a lot as I wasn’t interested in the majority of the frame (e.g. I removed all of the empty sky from the drill photo).
Ralph was a photographer that pursued photography primarily as a passion as oppose to a source of income. He experimented with a variety of abstract techniques within his photography. One of his more notable photo-shoots ‘zen twigs’ had a strong focus on experimenting with focusing on branches and twigs with a very large aperture leaving all background subjects as simply a blur. His photo-shoot ‘no focus’ is a very expressive shoot with a lot of ambiguity as to what the subjects of the photos are. Most of his work has a very strong contrast as with the lack of focus I believe it is important to focus on tonal work.
In this example, Ralph used a large aperture leaving all subjects in the image entirely out of focus, creating a sense of ambiguity about the image. The image is rather formless with no distinct subject. It is difficult to discuss the technical aspects of the image however due to the large aperture required for such a photo, it is safe to assume that the shutter speed used would have to be rather high.
Response:
I took more inspiration from his work with the ‘Zen Twigs’ project as opposed to the ‘No Focus’ project. While I experimented with focus to a degree, I didn’t find much success with the no focus experimentation.
Camera settings – 1/25, f5.6, ISO 400
WB – Sunlight setting
WB – Shade Setting
WB – Cloud Setting
WB – Tungsten light setting
WB – white fluorescent light
Camera Settings – 1/1000, f5.6, ISO 400
WB – Auto
WB – Sunlight setting
WB – Shade setting
WB – Tungsten Light setting
White balance on a digital camera allows the user the change the colour balance in order to make an image appear more natural.
For my experimentation into using white balance with a camera, I used the same subject in 2 different scenarios: inside and outside, and then used the white balance setting to change the temperature of each of the images.
The above set of images were taken outside using natural light, and each image has been taken using a different white balance setting, such as daylight and tungsten light. Each of the images has a different temperature because of the different white balance setting I used.
The set of images above are pictures of the same subject (a pen) taken inside, also using 7 different white balance settings. These photographs used artificial lighting, and the contrast between the 2 sets of images can be easily seen.
The white balancing used in the first set of images, along with the use of natural, bright lighting, helped to make the images more clear, whereas the artificial lighting on the second set of images, made the images seem more clinical and staged.
The white balancing gave each image a different temperature, adding to the effect of each image, and giving it a different colour theme. The different white balancing setting can be used in different situations, to create the best image possible by altering the colour scheme in the image, and I will use the white balancing setting to alter images in the future.