I’d like to shed some more light on the concept and methodology of Peripheral Central Cone Concepts (P3C), or what I call “Stretching the Volume”.
Exposure is important in photography. A good write-up on it is as follows:
|By Nate Kay||http://www.thephotoargus.com/understanding-the-exposure-triangle/|
A basic Guide to Exposure triangle
The exposure triangle is a way to understand the three elements that determine a photo’s exposure. These three elements are ISO, aperture and shutter speed, which together result in a subject’s exposure value (EV). If you are a new photographer and/or need a quick review of what these elements are, here’s a crash course.
The ISO rating is an international standard that measures the image sensor’s sensitivity to light. A lower ISO means the sensor is less sensitive to light, while a higher ISO means more sensitivity. A sensor that’s very sensitive to light can capture images in low-light environments without using flash. However, that sensitivity can also make the image look grainy.
Aperture is the opening in the lens that determines how much focused light will reach the image sensor. It’s measured in f-stops. The beauty of the f/stop is that regardless of a lens’ focal length, the f/stop measures the same amount of light. For instance, f/4 on a 50mm lets in the same amount of light as f/4 on a 120mm. Although the diameter differs, the amount of light is the same because the length of the lens is different.
Shutter speed is measured in fractions of a second and determines how fast the shutter opens and closes. This controls a key element in photography: light, or specifically the amount of time light registers on the image sensor (or film). The shutter speed captures the world in split seconds, but it can also be slowed down to a few seconds or remain open even longer.
It’s critical to remember that a change in any one of these elements will influence the others and impact the final image. For example, by changing the aperture, you change the depth of field. By changing the ISO rating, you change the amount of light needed to create an image. By changing the shutter speed, you affect how motion is captured. In other words, you can’t control a single element by itself. You have to take into account how the other two elements will be affected and change the final exposure.
Fortunately, each element in the exposure triangle has a relative “stop of light” value. So, if you reduce the shutter speed to increase the light by one stop, you can regain the original EV by adjusting the ISO rating and/or decreasing the aperture by the same stop value.
Now that we’re done with the wonderful primer above, let’s move on to DOF. You may have seen me mention depth of the field. Given the context of the exposure triangle, what exactly is it?
Depth of the field is simply the in focus and out of focus elements of the art that create the “miracle” of photography.
I’m not claiming to be the best in the art of photography. I’m also not claiming to be a good photographer. I’m just claiming to be the first that connected two independent dots. The first is the depth of field that people know and love, with a few twists. The other is the application of the experimental scientific approach used everywhere in the world.
The entirety of Science is divided into two groups: Theory and Practice.
The theory is hard to grasp and requires a lot of learning of some very specific things. I would wager there are very few people who truly subscribe to this group. That means the rest of the global population will fall into second practitioner category, anyways. In a way, that means we photographers are all practical scientists, in a way.
You may have also seen me mention something called P3C. This stands for Peripheral Central Cone Concept. I call this “Stretching the Volume”. What is this and why we should worry about it?
Well, the answer is quite simple. Our eye is our tool to see the world around us. Those of us that strive to understand the physics/optics behind this process can benefit from being able to select what hardware would grant us the best snapshot of the world around us. Without understanding how we see and what we see, we may not be able to correctly capture our art to get the maximum effect.
One of the key aspects of my style is to present a 2D image in such a way that the brain will become confused and unable to find any reference points to define surface. As a result, the perception is that it appears 3D.
Does this sound familiar?
Truth be told, I didn’t see this mentioned in any books or sites talking about that in photography.
What really irks me is that there is a stigma that Photography is not equal to other kinds of art, such as painting. Why are we so shallow in defining art when we compare the capture of a photo image compared to a piece of art on the wall?
I believe that:
Digital photography, as a discipline, is an art
Digital photography paved a new era for art
The editing of Digital Photography is not an art. It is a technique.
Only by following the analog approach of photography is it truly art. You have a split second, and sometimes no second chance. In contrast, a painter can instantly repaint anything at any moment.
Any screen representation of a photo cannot properly demonstrate any 3D elements within a picture, even if they are there.
In closing, I’d like to share some innovative facts and use of techniques that I am surprised are not more commonly found and discussed in photography below:
|Courtesy of: http://www.webexhibits.org/colorart/about.html||http://www.webexhibits.org/colorart/ag.html|
We have surprisingly low visual acuity (resolution) in parts of the visual field that are not at the center of gaze — where we are looking. We are not aware of this because we instinctively direct our center of gaze to where we are looking.The center of gaze, called the fovea, has a higher density of cones than anywhere else on the retina. In fact, at the fovea, there are no rods at all. (In the diagram at right, the cones are shown in green.) The fovea evolved to have the highest possible visual acuity, and the cones are as small as they can possibly be and still function. Moreover, in the fovea, the retinal ganglion cells have smaller receptive fields, and in the periphery, they have much larger receptive fields.Curiously, despite the vitality of cones to our vision, we have 125 million rods and only 6 million cones.The fact that our vision has the highest acuity in the center of gaze does not mean that our vision in the rest of the visual field is inferior — it’s simply used for different things. Foveal vision is used for scrutinizing highly detailed objects, whereas peripheral vision is used for organizing the broad spatial scene and for seeing large objects. Our foveal vision is optimized for fine details, and our peripheral vision is optimized for coarser information. We should use new definition such as Visual perception as an ability to interpret the surrounding environment using light in the visible spectrum reflected by the objects in the environment. (Actually, we should do exact opposite we already defined the tool we will use in order to trick the brain. In order to do that we should confuse the brain by strategically placed on the wall carefully developed by the guidelines of P3C concept art.)
The most important part is to view it from right position. The rest involves talent and practice.
In order to make the right determinations, I would like to share this eyesight angle chart:
Courtesy of: Wikipedia.com
Surprisingly, these concepts are not often covered in Photography.
To trick the mind, I have found the best way is to combine objects that are in/out of focus and partially sticking out of the picture on a flat metal surface. That way, when you look from a certain distance, your brain will perceive 5 central degrees of vision as 8 degrees of para central, with part of your shot being perceived as 18 degrees of macular and/or 30 degrees of near peripheral vision. Please see the Lost in Action page for further details
One final comment. We all hold different opinions, and that’s okay. Let’s try to respect one another. Even if the modern world is torn apart with widely varied and sometimes radicalized opinions, let’s have some peace, at least in our professions and hobbies. Please refrain from offensive opinions and topics in blogs and forums.
There is a universe of discoveries to be made.
"My dentist has a few photos hanging in her office. All the photos are incredibly beautiful and soothing. They provide a level of comfort that I nearly forget I'm at a dentist's office."
"I like what you are bringing to the audience, I almost agree, except metal printing. I can only treat it as your suggestion to get better results (besides, it could be expensive, is it?). Today it is a sheet of metal, tomorrow it could be a hologram or something else.."
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