Evaluation of the Lens Flare
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Still Photography
Still Photography Soumik Mitra, Published by - Jharkhand Rai University Subject: STILL PHOTOGRAPHY Credits: 4 SYLLABUS Introduction to Photography Beginning of Photography; People who shaped up Photography. Camera; Lenses & Accessories - I What a Camera; Types of Camera; TLR; APS & Digital Cameras; Single-Lens Reflex Cameras. Camera; Lenses & Accessories - II Photographic Lenses; Using Different Lenses; Filters. Exposure & Light Understanding Exposure; Exposure in Practical Use. Photogram Introduction; Making Photogram. Darkroom Practice Introduction to Basic Printing; Photographic Papers; Chemicals for Printing. Suggested Readings: 1. Still Photography: the Problematic Model, Lew Thomas, Peter D'Agostino, NFS Press. 2. Images of Information: Still Photography in the Social Sciences, Jon Wagner, 3. Photographic Tools for Teachers: Still Photography, Roy A. Frye. Introduction to Photography STILL PHOTOGRAPHY Course Descriptions The department of Photography at the IFT offers a provocative and experimental curriculum in the setting of a large, diversified university. As one of the pioneers programs of graduate and undergraduate study in photography in the India , we aim at providing the best to our students to help them relate practical studies in art & craft in professional context. The Photography program combines the teaching of craft, history, and contemporary ideas with the critical examination of conventional forms of art making. The curriculum at IFT is designed to give students the technical training and aesthetic awareness to develop a strong individual expression as an artist. The faculty represents a broad range of interests and aesthetics, with course offerings often reflecting their individual passions and concerns. In this fundamental course, students will identify basic photographic tools and their intended purposes, including the proper use of various camera systems, light meters and film selection. -
Denver Cmc Photography Section Newsletter
MARCH 2018 DENVER CMC PHOTOGRAPHY SECTION NEWSLETTER Wednesday, March 14 CONNIE RUDD Photography with a Purpose 2018 Monthly Meetings Steering Committee 2nd Wednesday of the month, 7:00 p.m. Frank Burzynski CMC Liaison AMC, 710 10th St. #200, Golden, CO [email protected] $20 Annual Dues Jao van de Lagemaat Education Coordinator Meeting WEDNESDAY, March 14, 7:00 p.m. [email protected] March Meeting Janice Bennett Newsletter and Communication Join us Wednesday, March 14, Coordinator fom 7:00 to 9:00 p.m. for our meeting. [email protected] Ron Hileman CONNIE RUDD Hike and Event Coordinator [email protected] wil present Photography with a Purpose: Conservation Photography that not only Selma Kristel Presentation Coordinator inspires, but can also tip the balance in favor [email protected] of the protection of public lands. Alex Clymer Social Media Coordinator For our meeting on March 14, each member [email protected] may submit two images fom National Parks Mark Haugen anywhere in the country. Facilities Coordinator [email protected] Please submit images to Janice Bennett, CMC Photo Section Email [email protected] by Tuesday, March 13. [email protected] PAGE 1! DENVER CMC PHOTOGRAPHY SECTION MARCH 2018 JOIN US FOR OUR MEETING WEDNESDAY, March 14 Connie Rudd will present Photography with a Purpose: Conservation Photography that not only inspires, but can also tip the balance in favor of the protection of public lands. Please see the next page for more information about Connie Rudd. For our meeting on March 14, each member may submit two images from National Parks anywhere in the country. -
“Digital Single Lens Reflex”
PHOTOGRAPHY GENERIC ELECTIVE SEM-II DSLR stands for “Digital Single Lens Reflex”. In simple language, a DSLR is a digital camera that uses a mirror mechanism to either reflect light from a camera lens to an optical viewfinder (which is an eyepiece on the back of the camera that one looks through to see what they are taking a picture of) or let light fully pass onto the image sensor (which captures the image) by moving the mirror out of the way. Although single lens reflex cameras have been available in various shapes and forms since the 19th century with film as the recording medium, the first commercial digital SLR with an image sensor appeared in 1991. Compared to point-and-shoot and phone cameras, DSLR cameras typically use interchangeable lenses. Take a look at the following image of an SLR cross section (image courtesy of Wikipedia): When you look through a DSLR viewfinder / eyepiece on the back of the camera, whatever you see is passed through the lens attached to the camera, which means that you could be looking at exactly what you are going to capture. Light from the scene you are attempting to capture passes through the lens into a reflex mirror (#2) that sits at a 45 degree angle inside the camera chamber, which then forwards the light vertically to an optical element called a “pentaprism” (#7). The pentaprism then converts the vertical light to horizontal by redirecting the light through two separate mirrors, right into the viewfinder (#8). When you take a picture, the reflex mirror (#2) swings upwards, blocking the vertical pathway and letting the light directly through. -
Completing a Photography Exhibit Data Tag
Completing a Photography Exhibit Data Tag Current Data Tags are available at: https://unl.box.com/s/1ttnemphrd4szykl5t9xm1ofiezi86js Camera Make & Model: Indicate the brand and model of the camera, such as Google Pixel 2, Nikon Coolpix B500, or Canon EOS Rebel T7. Focus Type: • Fixed Focus means the photographer is not able to adjust the focal point. These cameras tend to have a large depth of field. This might include basic disposable cameras. • Auto Focus means the camera automatically adjusts the optics in the lens to bring the subject into focus. The camera typically selects what to focus on. However, the photographer may also be able to select the focal point using a touch screen for example, but the camera will automatically adjust the lens. This might include digital cameras and mobile device cameras, such as phones and tablets. • Manual Focus allows the photographer to manually adjust and control the lens’ focus by hand, usually by turning the focus ring. Camera Type: Indicate whether the camera is digital or film. (The following Questions are for Unit 2 and 3 exhibitors only.) Did you manually adjust the aperture, shutter speed, or ISO? Indicate whether you adjusted these settings to capture the photo. Note: Regardless of whether or not you adjusted these settings manually, you must still identify the images specific F Stop, Shutter Sped, ISO, and Focal Length settings. “Auto” is not an acceptable answer. Digital cameras automatically record this information for each photo captured. This information, referred to as Metadata, is attached to the image file and goes with it when the image is downloaded to a computer for example. -
Session Outline: History of the Daguerreotype
Fundamentals of the Conservation of Photographs SESSION: History of the Daguerreotype INSTRUCTOR: Grant B. Romer SESSION OUTLINE ABSTRACT The daguerreotype process evolved out of the collaboration of Louis Jacques Mande Daguerre (1787- 1851) and Nicephore Niepce, which began in 1827. During their experiments to invent a commercially viable system of photography a number of photographic processes were evolved which contributed elements that led to the daguerreotype. Following Niepce’s death in 1833, Daguerre continued experimentation and discovered in 1835 the basic principle of the process. Later, investigation of the process by prominent scientists led to important understandings and improvements. By 1843 the process had reached technical perfection and remained the commercially dominant system of photography in the world until the mid-1850’s. The image quality of the fine daguerreotype set the photographic standard and the photographic industry was established around it. The standardized daguerreotype process after 1843 entailed seven essential steps: plate polishing, sensitization, camera exposure, development, fixation, gilding, and drying. The daguerreotype process is explored more fully in the Technical Note: Daguerreotype. The daguerreotype image is seen as a positive to full effect through a combination of the reflection the plate surface and the scattering of light by the imaging particles. Housings exist in great variety of style, usually following the fashion of miniature portrait presentation. The daguerreotype plate is extremely vulnerable to mechanical damage and the deteriorating influences of atmospheric pollutants. Hence, highly colored and obscuring corrosion films are commonly found on daguerreotypes. Many daguerreotypes have been damaged or destroyed by uninformed attempts to wipe these films away. -
Sample Manuscript Showing Specifications and Style
Information capacity: a measure of potential image quality of a digital camera Frédéric Cao 1, Frédéric Guichard, Hervé Hornung DxO Labs, 3 rue Nationale, 92100 Boulogne Billancourt, FRANCE ABSTRACT The aim of the paper is to define an objective measurement for evaluating the performance of a digital camera. The challenge is to mix different flaws involving geometry (as distortion or lateral chromatic aberrations), light (as luminance and color shading), or statistical phenomena (as noise). We introduce the concept of information capacity that accounts for all the main defects than can be observed in digital images, and that can be due either to the optics or to the sensor. The information capacity describes the potential of the camera to produce good images. In particular, digital processing can correct some flaws (like distortion). Our definition of information takes possible correction into account and the fact that processing can neither retrieve lost information nor create some. This paper extends some of our previous work where the information capacity was only defined for RAW sensors. The concept is extended for cameras with optical defects as distortion, lateral and longitudinal chromatic aberration or lens shading. Keywords: digital photography, image quality evaluation, optical aberration, information capacity, camera performance database 1. INTRODUCTION The evaluation of a digital camera is a key factor for customers, whether they are vendors or final customers. It relies on many different factors as the presence or not of some functionalities, ergonomic, price, or image quality. Each separate criterion is itself quite complex to evaluate, and depends on many different factors. The case of image quality is a good illustration of this topic. -
Seeing Like Your Camera ○ My List of Specific Videos I Recommend for Homework I.E
Accessing Lynda.com ● Free to Mason community ● Set your browser to lynda.gmu.edu ○ Log-in using your Mason ID and Password ● Playlists Seeing Like Your Camera ○ My list of specific videos I recommend for homework i.e. pre- and post-session viewing.. PART 2 - FALL 2016 ○ Clicking on the name of the video segment will bring you immediately to Lynda.com (or the login window) Stan Schretter ○ I recommend that you eventually watch the entire video class, since we will only use small segments of each video class [email protected] 1 2 Ways To Take This Course What Creates a Photograph ● Each class will cover on one or two topics in detail ● Light ○ Lynda.com videos cover a lot more material ○ I will email the video playlist and the my charts before each class ● Camera ● My Scale of Value ○ Maximum Benefit: Review Videos Before Class & Attend Lectures ● Composition & Practice after Each Class ○ Less Benefit: Do not look at the Videos; Attend Lectures and ● Camera Setup Practice after Each Class ○ Some Benefit: Look at Videos; Don’t attend Lectures ● Post Processing 3 4 This Course - “The Shot” This Course - “The Shot” ● Camera Setup ○ Exposure ● Light ■ “Proper” Light on the Sensor ■ Depth of Field ■ Stop or Show the Action ● Camera ○ Focus ○ Getting the Color Right ● Composition ■ White Balance ● Composition ● Camera Setup ○ Key Photographic Element(s) ○ Moving The Eye Through The Frame ■ Negative Space ● Post Processing ○ Perspective ○ Story 5 6 Outline of This Class Class Topics PART 1 - Summer 2016 PART 2 - Fall 2016 ● Topic 1 ○ Review of Part 1 ● Increasing Your Vision ● Brief Review of Part 1 ○ Shutter Speed, Aperture, ISO ○ Shutter Speed ● Seeing The Light ○ Composition ○ Aperture ○ Color, dynamic range, ● Topic 2 ○ ISO and White Balance histograms, backlighting, etc. -
Aperture, Exposure, and Equivalent Exposure Aperture
Aperture, Exposure, and Equivalent Exposure Aperture Also known as f-stop Aperture Controls opening’s size during exposure Another term for aperture: f-stop Controls Depth of Field Each full stop on the aperture (f-stop) either doubles or halves the amount of light let into the camera Light is halved this direction Light is doubled this direction The Camera/Eye Comparison Aperture = Camera body = Pupil Shutter = Eyeball Eyelashes Lens Iris diaphragm = Film = Iris Light sensitive retina Aperture and Depth of Field Depth of Field • The zone of sharpness variable by aperture, focal length, or subject distance f/22 f/8 f/4 f/2 Large Depth of Field Shot at f/22 Jacob Blade Shot at f/64 Ansel Adams Shallow Depth of Field Shot at f/4 Keely Nagel Shot at f/5.6 How is a darkroom test strip like a camera’s light meter? They both tell how much light is being allowed into an exposure and help you to pick the correct amount of light using your aperture and proper time (either timer or shutter speed) This is something called Equivalent Exposure Which will be explained now… What we will discuss • Exposure • Equivalent Exposure • Why is equivalent exposure important? Photography – Greek photo = light graphy = writing What is an exposure? Which one is properly exposed and what happened to the others? A B C Under Exposed A Over Exposed B Properly Exposed C Exposure • Combined effect of volume of light hitting the film or sensor and its duration. • Volume is controlled by the aperture (f-stop) • Duration (time) is controlled by the shutter speed Equivalent -
Minolta Electronic Auto-Exposure 35Mm Single Lens Reflex Cameras and CLE
Minolta Electronic Auto-Exposure 35mm Single Lens Reflex Cameras and CLE Minolta's X-series 35mm single lens user the creative choice of aperture and circuitry requires a shutter speed faster reflex cameras combine state-of-the-art shutter-priority automation, plus metered than 1/1000 second. These cameras allow photographic technology with Minolta's tra manual operation at the turn of a lever. The full manual control for employing sophisti ditional fine handling and human engineer photographer can select shutter-priority cated photo techniques. The silent elec ing to achieve precision instruments that operation to freeze action or control the tronic self-timer features a large red LED are totally responsive to creative photogra amount of blur for creative effect. Aperture signal which pulsates with increasing fre phy. Through-the-Iens metering coupled priority operation is not only useful for quency during its ten-second operating with advanced, electronically governed depth-of-field control , auto~exposure with cycle to indicate the approaching exposure. focal-plane shutters provide highly accu bellows, extension tubes and mirror lenses, The Motor Drive 1, designed exclusively rate automatic exposure control. All X but for the control of shutter speed as well . for the XG-M, provides single-frame and series cameras are compatible with the Full metered-manual exposure control continuous-run film advance up to 3.5 vast array of lenses and accessories that allows for special techniques. frames per second. Plus, auto winders and comprise the Minolta single lens reflex A vibration-free electromagnetic shutter "dedicated" automatic electronic flash units system. release triggers the quiet electronic shutter. -
Ground-Based Photographic Monitoring
United States Department of Agriculture Ground-Based Forest Service Pacific Northwest Research Station Photographic General Technical Report PNW-GTR-503 Monitoring May 2001 Frederick C. Hall Author Frederick C. Hall is senior plant ecologist, U.S. Department of Agriculture, Forest Service, Pacific Northwest Region, Natural Resources, P.O. Box 3623, Portland, Oregon 97208-3623. Paper prepared in cooperation with the Pacific Northwest Region. Abstract Hall, Frederick C. 2001 Ground-based photographic monitoring. Gen. Tech. Rep. PNW-GTR-503. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 340 p. Land management professionals (foresters, wildlife biologists, range managers, and land managers such as ranchers and forest land owners) often have need to evaluate their management activities. Photographic monitoring is a fast, simple, and effective way to determine if changes made to an area have been successful. Ground-based photo monitoring means using photographs taken at a specific site to monitor conditions or change. It may be divided into two systems: (1) comparison photos, whereby a photograph is used to compare a known condition with field conditions to estimate some parameter of the field condition; and (2) repeat photo- graphs, whereby several pictures are taken of the same tract of ground over time to detect change. Comparison systems deal with fuel loading, herbage utilization, and public reaction to scenery. Repeat photography is discussed in relation to land- scape, remote, and site-specific systems. Critical attributes of repeat photography are (1) maps to find the sampling location and of the photo monitoring layout; (2) documentation of the monitoring system to include purpose, camera and film, w e a t h e r, season, sampling technique, and equipment; and (3) precise replication of photographs. -
How Post-Processing Effects Imitating Camera Artifacts Affect the Perceived Realism and Aesthetics of Digital Game Graphics
How post-processing effects imitating camera artifacts affect the perceived realism and aesthetics of digital game graphics Av: Charlie Raud Handledare: Kai-Mikael Jää-Aro Södertörns högskola | Institutionen för naturvetenskap, miljö och teknik Kandidatuppsats 30 hp Medieteknik | HT2017/VT2018 Spelprogrammet Hur post-processing effekter som imiterar kamera-artefakter påverkar den uppfattade realismen och estetiken hos digital spelgrafik 2 Abstract This study investigates how post-processing effects affect the realism and aesthetics of digital game graphics. Four focus groups explored a digital game environment and were exposed to various post-processing effects. During qualitative interviews these focus groups were asked questions about their experience and preferences and the results were analysed. The results can illustrate some of the different pros and cons with these popular post-processing effects and this could help graphical artists and game developers in the future to use this tool (post-processing effects) as effectively as possible. Keywords: post-processing effects, 3D graphics, image enhancement, qualitative study, focus groups, realism, aesthetics Abstrakt Denna studie undersöker hur post-processing effekter påverkar realismen och estetiken hos digital spelgrafik. Fyra fokusgrupper utforskade en digital spelmiljö medan olika post-processing effekter exponerades för dem. Under kvalitativa fokusgruppsintervjuer fick de frågor angående deras upplevelser och preferenser och detta resultat blev sedan analyserat. Resultatet kan ge en bild av de olika för- och nackdelarna som finns med dessa populära post-processing effekter och skulle möjligen kunna hjälpa grafiker och spelutvecklare i framtiden att använda detta verktyg (post-processing effekter) så effektivt som möjligt. Keywords: post-processing effekter, 3D-grafik, bildförbättring, kvalitativ studie, fokusgrupper, realism, estetik 3 Table of content Abstract ..................................................................................................... -
Lens Flare Prediction Based on Measurements with Real-Time Visualization
Authors manuscript. Published in The Visual Computer, first online: 14 May 2018 The final publication is available at Springer via https://doi.org/10.1007/s00371-018-1552-4. Lens flare prediction based on measurements with real-time visualization Andreas Walch1 · Christian Luksch1 · Attila Szabo1 · Harald Steinlechner1 · Georg Haaser1 · Michael Schw¨arzler1 · Stefan Maierhofer1 Abstract Lens flare is a visual phenomenon caused by lens system or due to scattering caused by lens mate- interreflection of light within a lens system. This effect rial imperfections. The intensity of lens flare heavily de- is often seen as an undesired artifact, but it also gives pends on the camera to light source constellation and rendered images a realistic appearance and is even used of the light source intensity, compared to the rest of for artistic purposes. In the area of computer graph- the scene [7]. Lens flares are often regarded as a dis- ics, several simulation based approaches have been pre- turbing artifact, and camera producers develop coun- sented to render lens flare for a given spherical lens sys- termeasures, such as anti-reflection coatings and opti- tem. For physically reliable results, these approaches mized lens hoods to reduce their visual impact. In other require an accurate description of that system, which applications though, movies [16,23] or video games [21], differs from camera to camera. Also, for the lens flares lens flares are used intentionally to imply a higher de- appearance, crucial parameters { especially the anti- gree of realism or as a stylistic element. Figure 1 shows reflection coatings { can often only be approximated.