Cameras, Exposure, and Photography

Start Date: 02/23/2020

Course Type: Common Course

Course Link:

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About Course

Welcome to Course One of Photography Basics and Beyond: From Smartphone to DSLR! In these first 4 Modules you will gain the knowledge and the confidence that will help you make good choices as you consider qualities of the camera you own, and the qualities of the other types of digital cameras you might be considering. You will learn about the basic functions that most digital cameras have in common. You will also go beyond the "technical" matters and learn about how you can make exciting pictures by emphasizing the aspects of Frame and Vantage Point to interpret old subjects in new ways. Discovering accessories that photographers find useful, and the types of camera bags from mini to carry-on sized, is also in store for you. You will also make your first photographs and, if you are a subscriber to the specialization, upload pictures to the web gallery and start interacting with your fellow learners in our "Gallery." Let's get started with Module One!

Course Syllabus

Welcome to the Module One of Course One, where we will begin our journey together to gain the knowledge and skills that will help you take control of your photography! The world of digital photography presents so many "tech" options that it can be quite confusing. Throughout this Course and Specialization, we will be sorting through the various functions, menus, and also the good old focus and exposure and camera craft aspects, so you can build a foundation for success. We'll start with some Basics, and keep building!

Deep Learning Specialization on Coursera

Course Introduction

Cameras, Exposure, and Photography Welcome to the third and final course in the specialization on camera operation and maintenance. This course will be on subjects such as lenses, focusing, focusing motors, focusing tools, focusing rings, lens hoods, lenses caps, and camera bodies. You will learn to apply these concepts in order to keep your camera running smoothly and avoid any camera problems down the road.Lenses and Rings Focusing Rings and Autofocus Lens Construction Lenses and Rings Combination Cleaning up after Yourself “Take Your Energetics to the Next Level” - The purpose of this course is to help you take your body, mind, and spirit to the next level. In this course we will focus on the practical skills of self-care that you need to practice and hone to ensure your body, mind, and spirit are ready to help you achieve whatever level of self-care you choose. In this course we will: 1. Describe the purpose of eating and drinking 2. Describe the benefits and limitations of physical exercise 3. Identify environmental and psychological factors that can influence your ability to engage in physical activity 4. Identify appropriate activities to engage your body in order to support your goals of attaining and maintaining a healthy weight, getting plenty of sleep, and optimizing your overall wellness We’ll provide you with a variety of foods and beverages that

Course Tag

Confidence History Creativity Photography

Related Wiki Topic

Article Example
Exposure (photography) In photography, exposure is the amount of light per unit area (the image plane illuminance times the exposure time) reaching a photographic film or electronic image sensor, as determined by shutter speed, lens aperture and scene luminance. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance in a specified region.
Exposure (photography) Cameras with any kind of internal exposure meter usually feature an exposure compensation setting which is intended to allow the photographer to simply offset the exposure level from the internal meter's estimate of appropriate exposure. Frequently calibrated in stops, also known as EV units, a "+1" exposure compensation setting indicates one stop more (twice as much) exposure and "–1" means one stop less (half as much) exposure.
Exposure (photography) A camera in automatic exposure (abbreviation: AE) mode automatically calculates and adjusts exposure settings to match (as closely as possible) the subject's mid-tone to the mid-tone of the photograph. For most cameras this means using an on-board TTL exposure meter.
Exposure compensation In photography, some cameras include exposure compensation as a feature to allow the user to adjust the automatically calculated exposure. Compensation can be either positive (additional exposure) or negative (reduced exposure), and is frequently available in third- or half-step, less commonly in full steps or even quarter-step increments, usually up to two or three steps in either direction; a few film and some digital cameras allow a greater range of up to four, five or even six steps in both directions. Camera exposure compensation is commonly stated in terms of EV units; 1 EV is equal to one exposure step (or stop), corresponding to a doubling of exposure.
Exposure (photography) Today, most cameras automatically determine the correct exposure at the time of taking a photograph by using a built-in light meter, or multiple point meters interpreted by a built-in computer, see metering mode.
Long-exposure photography Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements. Long-exposure photography captures one element that conventional photography does not: time. The paths of bright moving objects become clearly visible. Clouds form broad bands, head and tail lights of cars become bright streaks, stars form trails in the sky and water smooths over. Only bright objects will form visible trails, however, dark objects usually disappear. Boats during daytime long exposures will disappear, but will form bright trails from their lights at night.
Exposure (photography) An appropriate exposure for a photograph is determined by the sensitivity of the medium used. For photographic film, sensitivity is referred to as film speed and is measured on a scale published by the International Organization for Standardization (ISO). Faster film, that is, film with a higher ISO rating, requires less exposure to make a readable image. Digital cameras usually have variable ISO settings that provide additional flexibility. Exposure is a combination of the length of time and the illuminance at the photosensitive material. Exposure time is controlled in a camera by shutter speed, and the illuminance depends on the lens aperture and the scene luminance. Slower shutter speeds (exposing the medium for a longer period of time), greater lens apertures (admitting more light), and higher-luminance scenes produce greater exposures.
Exposure (photography) The Zone System is another method of determining exposure and development combinations to achieve a greater tonality range over conventional methods by varying the contrast of the film to fit the print contrast capability. Digital cameras can achieve similar results (high dynamic range) by combining several different exposures (varying shutter or diaphram) made in quick succession.
Exposure (photography) Exposure compensation is particularly useful in combination with auto-exposure mode, as it allows the photographer to "bias" the exposure level without resorting to full manual exposure and losing the flexibility of auto exposure. On low-end video camcorders, exposure compensation may be the only manual exposure control available.
Photography Photographs, both monochrome and color, can be captured and displayed through two side-by-side images that emulate human stereoscopic vision. Stereoscopic photography was the first that captured figures in motion. While known colloquially as "3-D" photography, the more accurate term is stereoscopy. Such cameras have long been realized by using film and more recently in digital electronic methods (including cell phone cameras).
Candid photography Lomo rule photography describes the fashion of using inexpensive Russian point-and shoot-cameras for candid photography.
Digital photography Digital photography is a form of photography that uses cameras containing arrays of electronic photodetectors to capture images focused by a lens, as opposed to an exposure on photographic film. The captured images are digitized and stored as a computer file ready for further digital processing, viewing, digital publishing or printing.
Exposure value Current cameras do not allow direct setting of EV, and cameras with automatic exposure control generally obviate the need for it. EV can nonetheless be helpful when used to transfer recommended exposure settings from an exposure meter (or table of recommended exposures) to an exposure calculator (or table of camera settings).
Exposure (photography) "Manual" exposure calculations may be based on some method of light metering with a working knowledge of exposure values, the APEX system and/or the Zone System.
Exposure (photography) In manual mode, the photographer adjusts the lens aperture and/or shutter speed to achieve the desired exposure. Many photographers choose to control aperture and shutter independently because opening up the aperture increases exposure, but also decreases the depth of field, and a slower shutter increases exposure but also increases the opportunity for motion blur.
Exposure (photography) The purpose of an exposure meter is to estimate the subject's mid-tone luminance and indicate the camera exposure settings required to record this as a mid-tone. In order to do this it has to make a number of assumptions which, under certain circumstances, will be wrong. If the exposure setting indicated by an exposure meter is taken as the "reference" exposure, the photographer may wish to deliberately "overexpose" or "underexpose" in order to compensate for known or anticipated metering inaccuracies.
Slit-scan photography More generally, "slit-scan photography" refers to cameras that use a slit, which is particularly used in scanning cameras in panoramic photography. This has numerous applications, and is covered at strip photography. This article discusses the manual artistic technique.
Exposure (photography) "Correct" exposure may be defined as an exposure that achieves the effect the photographer intended.
Shutter (photography) Shutter lag is the time between the shutter release being pressed and the exposure started. While this delay was insignificant on most film and some digital cameras, many digital cameras have significant delay, which can be a problem with fast-moving subjects as in sports and other action photography. Release lag of a bridge camera such as the 2010 Pentax X90 is a relatively short 1/50 s, or 21 milliseconds (ms). The Canon 50d dSLR is specified at 131 ms lag.
Afocal photography One method of afocal photography is to mount a camera with its lens attached behind the eyepiece an Keplerian optical telescope, the combination giving the photographer a long focus lens. Historically afocal photography with 35 mm SLR or large format film cameras was a very difficult method of photography. With film cameras the bulk and mechanical shake had to be taken into consideration, with some setups employing a separate tripod for the camera (adding the complexity of setting up the camera in relationship to the eyepiece). The general difficulties of focus and exposure with film cameras, along with the detailed mathematical calculations, combined with the time lag of waiting for the film to be developed, meant film afocal photography could be pretty hit and miss.