Camera: Photography and Lens Essay

Submitted By jacksonasd
Words: 1008
Pages: 5
Open Document
Camera:
Lens
The lens is one of the most vital parts of a camera. The light enters through the lens, and this is where the photo process begins. Lenses can be either fixed permanently to the body or interchangeable. They can also vary in focal length, aperture, and other details.
Viewfinder
The viewfinder can be found on all DSLRs and some models of digital compacts. On DSLRs, it will be the main visual source for image-taking, but many of today’s digital compacts have replaced the typical viewfinder with an LCD screen.
Body
The body is the main portion of the camera, and bodies can be a number of different shapes and sizes. DSLRs tend to be larger bodied and a bit heavier, while there are other consumer cameras that are a conveniently smaller size and even able to fit into a pocket.
Shutter Release
The shutter release button is the mechanism that “releases” the shutter and therefore enables the ability to capture the image. The length of time the shutter is left open or “exposed” is determined by the shutter speed.
Aperture
The aperture affects the image’s exposure by changing the diameter of the lens opening, which controls the amount of light reaching the image sensor. Some digital compacts will have a fixed aperture lens, but most of today’s compact cameras have at least a small aperture range. This range will be expressed in f/stops. For DSLRs, the lens will vary on f/stop limits, but it is usually easily defined by reading the side of the lens. There will be a set of numbers stating the f/stop or f/stop range, ex: f/2.8 or f/3.5-5.6. This will be your lowest settings available with that lens.
Image Sensor
The image sensor converts the optical image to an electronic signal, which is then sent to your memory card. There are two main types of image sensors that are used in most digital cameras: CMOS and CCD. Both forms of the sensor accomplish the same task, but each has a different method of performance.
Memory Card
The memory card stores all of the image information, and they range in size and speed capacity. The main types of memory cards available are CF and SD cards, and cameras vary on which type that they require.
LCD Screen
The LCD screen is found on the back of the body and can vary in size. On digital compact cameras, the LCD has typically begun to replace the viewfinder completely. On DSLRs, the LCD is mainly for viewing photos after shooting, but some cameras do have a “live mode” as well.
Flash
The on-board flash will be available on all cameras except some professional grade DSLRs. It can sometimes be useful to provide a bit of extra light during dim, low light situations.

User Controls
The controls on each camera will vary depending on the model and type. Your basic digital compacts may only have auto settings that can be used for different environments, while a DSLR will have numerous controls for auto and manual shooting along with custom settings.
Lens:
A lens with a rounder shape will have a more acute bending angle. Curving the lens out increases the distance between different points on the lens. This increases the amount of time that one part of the light wave is moving faster than another part, so the light makes a sharper turn.
Increasing the bending angle has an obvious effect. Light beams from a particular point will converge at a point closer to the lens. In a lens with a flatter shape, light beams will not turn as sharply. Consequently, the light beams will converge farther away from the lens. The focused real image forms farther away from the lens when the lens has a flatter surface.
Increasing the distance between the lens and the real image actually increases the total size of the
Show More

Related Documents: Camera: Photography and Lens Essay

Assessment Task 1 1 Essay

Assessment 1.2. Extended 1000 words essay on the same topic “how does a digital camera work? How does a digital camera work? Digital cameras allow computer users to take pictures and store the photographed images digitally instead of on traditional film. With some digital cameras, a user downloads the stored pictures from the digital camera to a computer using special software included with the camera. With others, the camera stores the pictures directly on a floppy disk or on a PC Card. A user then copies…

Words 1142 - Pages 5

Essay on Digital Photography

Digital Photography The History of Digital Photography One of the greatest inventions of our time is digital photography. The world of digital photography has come a long way since the 1950’s. It has become a way for humans to communicate and express themselves. Digital photography lets us do this immediately and with limitless possibilities. This instant technology allows us to share photos with anyone at all in the world, thus enriching our lives. The history of digital photography began…

Words 3049 - Pages 13

Photography In Criminal Investigation

Photography in modern criminal investigation Criminal investigation Semester designation: Instructor: Date: Name: E-mail address: Introduction Photography of everything from scenes to authentic occasions has protected and shown history for as far back as 200 years (Riener-Hofer et al. pg 23). At the point when a photo of a manufactured archive was displayed and permitted as court confirmation in 1851, photography as a criminological investigative instrument was conceived and soon turned into…

Words 1606 - Pages 7

Summary Of Plato's Cave By Susan Sontag

of something that they believe is reality when in fact, it is only a shadow; the prisoners are completely blind to the real objects present directly behind them. It seems as though Sontag is comparing the allegory of these shadows to reality and photography; photos are like the shadows in Plato’s Cave, they simply are not real. Also, photographs can easily be doctored or changed; “Photographs, which fiddle with the scale of the world, themselves get reduced, blown up, cropped, retouched, doctored,…

Words 813 - Pages 4

Nature Of Reinforcement Theory: Guthrie Versus Pavlov

habits when it comes to photography, perhaps by figuring out the hours of the day he prefer to take pictures, such as which accessories should be used. To use a recent example, this student recently purchased a macro lens for his camera, and since he got this new lens, he found himself taking a lot more macro pictures than before, because now, the pictures are coming out better than they did before the purchase of the new lens. Once he figure it out the best way to use the macro lens, he have been practicing…

Words 773 - Pages 4

Essay on Kodak Strategic Analysis

Changes from Traditional Photography Industry to Digital Imaging Industry The industry transformation from traditional photography to digital imaging was a full-scale paradigm shift. Digital technologies not only completely changed the value chain, but also changed the resources and capabilities required for firms to compete at each level. In traditional photography, photos and videos are captured on film cameras. The unprocessed films are sent to processing center to produce negatives. Then prints…

Words 1581 - Pages 7

mr steve Essay

Fundamentals of Digital Photography 1, ISO Test Learning Projects www.johngreengo.com Objective: Test and examine the results of your cameras ISO settings to determine the loss of quality as the ISO increases. Shoot a static subject at all full-stop ISO settings (100, 200, 400, 800, 1600, 3200 etc.). Maintain the same aperture, so as not to change the depth of field, and just change the shutter speed to accommodate the change in ISO. Use a tripod and be careful not to move the camera or adjust either…

Words 1202 - Pages 5

Lens Filter Research Paper

Lens Filters: A Detailed Look Module Three: Intermediate Digital Photography Lens Filters: A Detailed Look Learning Outcomes In this lesson, we will take a detailed look at lens filters and study the effects of a variety of types of filter available today. By the end of this lesson, you will begin to think about what use your type of work might have for lens filters and which ones best suit you. UV/Clear/Haze Filter The purpose of a UV / Clear / Haze filters today is to simply protect the front element…

Words 1786 - Pages 8

Canon Case Essay

Canon SLR Situation In 2004 Canon established a new segment in the Single-Lens-Reflex (SLR) camera market: a digital SLR camera at a price point of about 1,000 EURO. This entry-level camera made digital SLR photography suddenly affordable for the hobby photographer. The camera was an instant success and the competition had a big problem. In 2005 Canon planned to launch the follow-up model, the EOS 350D, and had even higher expectations: double sales to make the EOS 350D profitable. However…

Words 816 - Pages 4

Etienne Jacques Marey Research Paper

and journals specializing in photography.[2] Edison might have attended a demonstration of Etienne-Jules Marey's chronophotography the following summer in Paris. Marey had developed a technique for the analysis of motion in precise temporal units which he displayed at the Paris exposition. Edison met Marey and the Lumieres at a dinner commemorating the 50th anniversary of photography.[3] In the work of Marey, whose chronophotography pre-dated both the Lumiere camera and the multi-barrelled Gatling…

Words 313 - Pages 2