Photography Basics Ever wonder what it is that actually makes a camera work? This tutorial will cover the inner workings of a camera, and introduce you into photography basics and the expansive world of taking better photographs. To take beautiful photographs you do not need an expensive camera and a bag full of equipment. What is important is the photographer’s ability to see his/her surrounding and use knowledge and personal feel for the subject. Being the first article in a series, this lesson is meant to only cover the basics of photography. An introduction to Photography The word “photography” is French but is based on Greek word and literarily means “drawing with light“. The illustration to the left shows the path the light travels from the object to the sensor (or film in non-digital cameras). First the light needs to go through the lens, which is a series of differently shaped pieces of glass. On most modern cameras the shutter is placed inside the camera body. Aperture Shutter
Understanding Camera Lenses Understanding camera lenses can help add more creative control to digital photography. Choosing the right lens for the task can become a complex trade-off between cost, size, weight, lens speed and image quality. This tutorial aims to improve understanding by providing an introductory overview of concepts relating to image quality, focal length, perspective, prime vs. zoom lenses and aperture or f-number. All but the simplest cameras contain lenses which are actually comprised of several "lens elements." Each of these elements directs the path of light rays to recreate the image as accurately as possible on the digital sensor. The goal is to minimize aberrations, while still utilizing the fewest and least expensive elements. Optical aberrations occur when points in the image do not translate back onto single points after passing through the lens — causing image blurring, reduced contrast or misalignment of colors (chromatic aberration). Original Image ZOOM LENSES vs.
Missing Pages: Aperture and Shutter Priority Tips for Using Your Camera Creatively by Jon Sienkiewicz , April 2009 (updated November 2009) Introduction | I: ISO Setting | II: Program AE | III : Aperture & Shutter Priority | IV: White Balance | V: Depth of Field | VI: Bracketing | VII : Megapixels | VIII : Flash Modes column is a collection of all of the information that should have been included in your camera’s Owner’s Manual—but somehow got left out. This is a hybrid assortment of short articles that delivers the know-how you need to derive the maximum enjoyment—and creative expression—from your equipment. It’s sort of a juiced-up User Guide for creative people who are not necessarily technical. We will explain complex technical subject matter a way that everyone can understand. Installment III : Aperture & Shutter Priority Definition: exposure modes that provide more control than Program AE but less than Manual mode. Each system has its own set of distinct advantages and disadvantages. Aperture Priority Shutter Priority Exercise 1
Camera Exposure: Aperture, ISO & Shutter Speed A photograph's exposure determines how light or dark an image will appear when it's been captured by your camera. Believe it or not, this is determined by just three camera settings: aperture, ISO and shutter speed (the "exposure triangle"). Mastering their use is an essential part of developing an intuition for photography. Achieving the correct exposure is a lot like collecting rain in a bucket. In photography, the exposure settings of aperture, shutter speed and ISO speed are analogous to the width, time and quantity discussed above. Each setting controls exposure differently: Aperture: controls the area over which light can enter your cameraShutter speed: controls the duration of the exposureISO speed: controls the sensitivity of your camera's sensor to a given amount of light One can therefore use many combinations of the above three settings to achieve the same exposure. By the Numbers. How it Appears. Slow Shutter Speed Fast Shutter Speed By the Numbers. How it Appears.
S'y retrouver dans la taille des capteurs en photo numérique Il est admis que plus un capteur est grand, et plus la qualité de l'image sera élevée. Reste à pouvoir se retrouver dans l'univers des mesures des capteurs photos. La taille exprimée en pouces découle directement de l'age de la TV à tube. Voici un schéma comparatif des principaux format de capteurs disponible sur le marché. Licence : Creative Commons - Author Mofyre Pourquoi choisir un grand capteur ? Mais en quoi un grand capteur est-il meilleur ? Toujours schématiquement, un capteur n'est pas fait d'une seule cellule (photosite) qui capte la lumière, mais de plusieurs millions. Ces éléments éclairent notre position farouchement anti "course aux mégapixels" que se livrent les constructeurs d'appareils photo. Du reflex au compact : éventail des tailles Toujours dans l'optique de se faire une idée plus précise de l'ordre de grandeur qui sépare les différent types de capteurs photo, voici les principaux formats disponibles : Nos sélections d'appareils photos
Making the Most of Natural Light in Photography Paying more attention to light is perhaps the single most important step you can take to improve your photography. With many landscapes, having good natural lighting can even be more important than the choice of subject itself. Different types of natural light can also produce a wide variety of subject appearances — even though these all have the same light source. Learn how to achieve the right light for your subject by utilizing the unique qualities of your particular time of day and weather. Flat Natural Light Better Natural Light Three factors influence how natural light renders a subject: time of day, camera direction and weather. Even though all natural light originates from the sun, a subject's illumination is actually comprised of several components: Move your mouse over each lighting component above to isolate its effect. Depending on the time of day, the relative amount of each component changes — resulting in an overall illumination with a different white balance or contrast.
Optimizing Exposure Why Do Camera Makers Give Us19th Century Exposures With Our 21st Century Cameras? Lace and Forest. Clearview, Ontario. Fuji X100 @ ISO 400 A Bit of Background Information In 2003 I wrote a tutorial titled Expose Right. The main points of that essay, summarized and updated, are as follows..... A cameras sensor is an analogue device. So What? OK. Cloud Painting. Fuji X100 @ ISO 200 Black Cats and White Cats Let's imagine two cats. What do these look like? Why? Take a picture of a typical scene, one with light tones, dark tones and medium tones, and a light meter or even the nifty 500 segment super-meter in your DSLR will do a pretty good job. The Clever Photographer But, of course we're more clever than our dumb cameras. Right? But – Not For Digital! In the case of the white cat and snow – yes – you would do the same as for film – increase the exposure so that it looked correct. Why? Well, there is the story of Willy Sutton the famous American bank robber. Some Caveats Early Corn. Normalizing Easy.
Understanding Depth of Field in Photography Depth of field refers to the range of distance that appears acceptably sharp. It varies depending on camera type, aperture and focusing distance, although print size and viewing distance can also influence our perception of depth of field. This tutorial is designed to give a better intuitive and technical understanding for photography, and provides a depth of field calculator to show how it varies with your camera settings. The depth of field does not abruptly change from sharp to unsharp, but instead occurs as a gradual transition. Since there is no critical point of transition, a more rigorous term called the "circle of confusion" is used to define how much a point needs to be blurred in order to be perceived as unsharp. When does the circle of confusion become perceptible to our eyes? At this viewing distance and print size, camera manufacturers assume a circle of confusion is negligible if no larger than 0.01 inches (when enlarged).
The Luminous Landscape Celebrating Our 15th Year Kilt Rock - Mealt Falls, November 2014 - Isle Of Skye, Scotland Fuji X-T1, 55-200mm at 74mm, f/8, 7.4 sec ISO 800, Lee Big Stopper by Kevin Raber There are Currently 184 Photographers Visiting The Luminous Landscape The contents of this site were last updated on 30 November, 2014 Michael's Phlog was just updated on October 21 lu-mi-nous (lue'muh nuhs) adj. 1. radiating or reflecting light; shining; bright. 2. clear; readily intelligible Welcome to The Luminous Landscape, the web’s most comprehensive site devoted to the art and technique of photography. The Publisher of this site is Kevin Raber Primed: Why your camera's sensor size matters Primed goes in-depth on the technobabble you hear on Engadget every day -- we dig deep into each topic's history and how it benefits our lives. You can follow the series here. Looking to suggest a piece of technology for us to break down? The first thing I look for when purchasing a camera is something most aren't even aware of. In writing my first installment for Primed, I'll give a few definitions to clear things up a bit when it comes to a camera's image sensors and size, explain in detail the parts of a sensor, how it alters the photos (or video) you capture, where it came from, and why it's important to consider its size – I'll cover the meat and bones, get to the heart of the matter, the nub, the crux, the nuts and bolts, get down to the brass tacks, all while exhausting our thesaurus. Table of Contents Image Sensor 101 Leaving the evolutionary branch of film Where we are now What to look for and why What your camera might be packin' in the future Wrap-up Detail
Photos : réglage de Focale 1. Notion La focale correspond à la distance entre la projection sur le capteur d'un point situé à l'infini et la lentille. Elle se mesure en millimètre (mm). Cette unité est standardisée y compris dans les pays pour lesquels le mètre n'est pas l'unité principale. La focale entre dans le calcul de la profondeur de champs, avec l'ouverture, ainsi que la distance du sujet et la taille du capteur. Les valeurs grand public varient de 16mm (pour les grands angles) à 400mm (pour les téléobjectifs). Il faut bien voir que la valeur de la focale inscrite sur l'objectif est celle qui correspond à un capteur type 24x36 (appareil argentique classique, ou capteur full-frame pour les appareils numériques). Un dernier point : lorsque les spécs techniques parlent d'un zoom de 10x, cela signifie qu'il y a un rapport de 10 entre la focale la plus grande et la focale la plus petite de l'appareil. 2. 3.