Image resolution

II INTRODUCTION The purpose of this lab was to demonstrate and observe the effect a large focal spot and a small focal spot will have on the resolution of the image. Chapter 3 of Practical Radiographic Imaging states that resolution is “the ability to distinguish two adjacent details as being separate and distinct from each other” (Carrol, 2007, p. 48). This definition of resolution helps to explain what will be looking for to retrieve the data for this lab. As stated in Chapter 16 of Practical Radiographic Imaging, the focal spot is defined as “the area on the x-ray tube anode which x-rays are emitted from, as seen from the viewpoint of the film” and this area can be determined by “the width of the beam of electrons striking the anode and by the bevel or angle of the surface of the anode where the electrons impact” (Carrol, 2007, p. 239). The goal of this lab is to prove that the focal spot size and the resolution are indirectly proportional to each other. This means that it should be expected that if the focal spot size decreases than the resolution increases and vice versa. To determine the data in this experiment a densitometer was used to test the resolution with the large and small focal spot sizes.…

Screen Resolutions: What You Should Know Resolution refers to the number of pixels on an image. A pixel is a tiny illumination that makes up an image. A good example is when you use Microsoft Paint with Microsoft Windows. Zoom in a little, click on the pencil and make a single dot. That could be considered a pixel. Many pixels on the screen may make up an image that you are able to recognise. http://i.imgur.com/x3hC4SA.jpg If you were to watch a video on your PC and you were able to zoom the…

by modern innovation and technology. One hundred years ago cameras used film, originally named Daguerreotype, to capture images. Original film works by the reflection of light—which travels at different wavelengths for different colors—striking the film, and an inverse image is burned into the film. The chemicals in…

Photography is one of the few fields that is actually able to capture the combination of the spiritual world, the art world and nature herself, an amalgamation that will certainly leave u breathless. What better device can you use to capture such moments than the DLSR camera. A SLR camera is different compared to other cameras because SLR camera allows the photographer to see the real whole image before hands. Most ordinary cameras usually have flaws in their viewfinder meaning they can't really…

As creatives being there is no end to the new ideas ready to spring. Microsoft is currently searching a system that for them to create curved sensors that will indeed enable us do all of that. “Our approach to curving commercially available image sensors could make it possible to have a new class of camera that would be very small, but have image quality that would be comparable to image sensors found in much larger cameras,” (The Optical Society May 2017)said Brian Guenter. And proto types have…

seems to reflect a glimmer of hope in the work of Nachtwey, his photographs tell a very different story. Whereas many photojournalists contrast images of life, death, and mere survival in order…

with the word “photography” from the Greek words known as photos, meaning light, and graphein, to write or draw. Herschel described photography as a process of recording images by “the use of light on a subtle material. After Herschel, a man from the Middle Ages named Alhazen designed the first pinhole camera, also known as the Camera Obscura. Alhazen’s invention was the key to an explanation for the reason why images were upside down when taken. In addition, Alhazen’s creation was not only a…

produced the first pinhole camera after observing how light travelled through a window shutter. He realized that smaller holes would create sharper images. He is also credited with inventing the first camera obscura. Camera obscura uses a pinhole or lens to project an image of the actual scene upside down onto a viewing surface. Camera obscura lead into the development of the first photographic camera. Pinhole cameras like the Camera…

(biography). Mather became his studio assistant and one of the most used models for his portraits in the years to come. !3 Edward Weston In 1922 Weston had a revelation when he went to Ohio. There he visited his sister and stumbled upon the American Rolling Mill Company or ARMCO. These images are known to be some of his most important work. It is when he began shooting in an industrial atmosphere that he realized that his photos should be true to reality, have sharp lines with high resolution.…

Fine art photography is photography created for aesthetic reasons. It can be used to express beauty. This type of photography can overlap with commercial, fashion, nature, black and white and portrait photography. It can also overlap with photojournalism. 2. What is stock photography? How is traditional stock photography different from micro-stock photography? Stock photography is photos that can be licensed for a certain use. Traditional stock photography is taken by professionals in a studio.…