background preloader

BASIS CURSUS

Facebook Twitter

How does a Global Shutter Work? Recently I had lunch with a friend who’s new to cinematography. The D16 inevitably came up, and while we were discussing some of the aspects of the camera, he asked me, “how does a global shutter work?” I thought this might be an interesting topic to talk about here. During this project, many people have asked us what the difference is between CCD and CMOS sensors, and why a CCD sensor usually has a global shutter and a CMOS sensor usually has a rolling shutter. CMOS stands for Complementary Metal Oxide Semiconductor, which actually refers to the process for making CMOS sensors.

The term for what we call CMOS sensors in the tech world is actually APS, or Active Pixel Sensor. Active Pixel Sensors read all of their pixels linearly from top left to bottom right while the shutter is open. CCD stands for Charge Coupled Device, and unlike the APS sensors, the pixels in a CCD store their charge until it has been depleted. The pixels that are next to each other on CCD sensors effect each other. Comparing the Dynamic Range of Digital Cameras - Outdoor Photo Academy. When Choosing a Camera, How do You Find its Dynamic Range? Dynamic range is one of the most important considerations for choosing a camera in the digital age. If you are not familiar with dynamic range, it is the range of tones that your camera can capture between pure white and pure black.

The wider the range the better. Dynamic range is particularly important to the outdoor photographer because you are almost always trying to capture a wide disparity of tones. Nevertheless, if you look through the specifications of any camera, you will not find a defined dynamic range. Dynamic range: 10.2 stops But they don’t. No Simple Test for Measuring Dynamic Range As important as dynamic range is, you would think that manufacturers would test all these cameras in some systematic way and tell you how wide the dynamic range is for each model. Turns out, it isn’t that simple. The measurement of dynamic range gets harder still.

The dynamic range of a camera is different at different ISO levels. CF, SD, geheugen fouten. Wat zijn CF en SD kaartjes? CF en SD geheugenkaartjes zijn het opslag medium van de meeste digitale fototoestellen. Volgende vragen heb ik proberen te beantwoorden: Zijn CF kaartjes echt zo robuust als men beweerd? Wat is de beste manier om foto's van uw toestel naar een pc over te brengen?. Mogelijke problemen en risico's van CF geheugenkaartjes: Risico op beschadiging van de verende contacten van de CF kaart Op de verende contacten van de CF kaart zit een goudlaagje met een dikte van een paar tienden µm (meestal flash goud), onder dat goud zit nikkel omdat goud slecht aan koper hecht. Het contact oppervlak is 500 µm breed, een stofje of wat zweet kan al problemen geven. De contacten van de mini USB in uw camera zijn een stuk robuuster, er zijn er ook maar 5 i.p.v. 50 , bij slecht kontact volstaat het meestal om gewoon de aansluitkabel te vervangen. Risico op verbuigen van de contact pennen Een pen contact in uw camera verbogen?

Polarisatie van de CF kaart Voedingsspanning. Conclusie. Conclusie. Photography Mapped - Interactive Camera Diagram. Example Was: Street at night Street at night F/Number Was: f/5.6 f/5.6 Shutter Speed Was: 1/60 1/60 Seconds Exposure Meter Was: 0 Technically good exposure In AUTO, settings automatically update to conpensate for lack or abundance of light. This means the camera will make its best guess of the exposure needed to get the right image brightness. When in MANUAL, you need to be aware of how adjusting settings is affecting exposure. An Exposure Meter (above) offers guidence. Depth of Field Motion Blur Image Noise Exposure Effect Light available light in; volume Light in; time Light needed On a small screen?

This is a reduced version (it still works there's just less info). De verschillende meetmethodes van je camera | Mischa de Muynck. Dit artikel is er eentje uit een serie van artikelen over het meten van licht en hoe je dit zo effectief mogelijk kan gebruiken op je camera. Eerder schreef ik wat over het histogram en over hoe je zo goed mogelijk kan voorkomen dat je ruis in je foto’s krijgt. Compenseren van een donker of een licht onderwerp beschreef ik in dit artikel over lichtmeten. Hieronder lees je welke lichtmeetmethodes je camera heeft en hoe je ze kan gebruiken. Een mooie gemiddelde scene voor een foto. De lichtmeter van je camera meet het reflecterende licht, dit is de reden waarom het wel eens mis gaat met de belichting als je onderwerp te licht of te donker is. Maar er is een andere reden waarom de lichtmeter van de camera de lichtmeting verkeerd kan doen. De beschikbare meetmethodes die je camera heeft zijn over het algemeen als volgt: Centrum gewogen gemiddelde: Deze methode kijkt naar het midden van de opname en neemt daar het gemiddelde over (zoals je ziet op de tekening hierboven).

Spotmeting: Deelmeting: Understanding Histograms in Photography. DOF PRO - Spherical Aberration Gallery. Stap 2: van automatisch naar handmatig fotograferen in 6 stappen - oskam fotografie. Hebben jullie goed geoefend met de witbalans van je camera? Mocht je er nog niet aan toe gekomen zijn, doe het dan lekker in je eigen tempo. Als je wel hebt kunnen oefenen met de witbalans, heb je dus kunnen zien dat de keuze van de soort witbalans bepalend is voor de kleurtoon in je foto.

Nu je dit geleerd en geoefend hebt, mag je dit gedeeltelijk weer loslaten van mij. Ik kan me nog herinneren dat ik na de basiscursus fotografie heel precies was met de witbalans. Als ik in de schaduw stond dan koos ik voor de stand schaduw, was het bewolkt dan koos ik voor bewolkt enz. Je kunt op de foto’s klikken om ze groter te maken!

Links zie je de foto met de witbalans op direct zonlicht, wat een logische keuze lijkt, want het was op dat moment ook heel zonnig. We laten nu de witbalans voor wat dat is. ISOWat is ISO? Opdracht 1: Zoek in het opnamemenu van je camera naar het instellen van de ISO waarden en maak met verschillende waarden dezelfde foto. Comparing the Sensor Noise of Top Cameras. DSLR Autofocus Modes Explained. Most modern digital SLR cameras are equipped with advanced autofocus systems that are often hard to understand. Whether you are shooting with an entry-level or professional DSLR, knowing how to use autofocus system effectively is essential to get sharp images.

A badly-focused, blurry image can ruin a photograph and you cannot repair it in post-processing. Some professionals often end up converting their images to black and white, to hide their focusing problems. If you learn how to focus correctly, you do not have to resort to such measures and you can deliver much better results to your clients and family. Simply put, accurate focus translates to sharper images and that is something everyone is looking for in photographs today.

NIKON D700 @ 420mm, ISO 500, 1/2000, f/5.6 In this article, I will teach you everything I know about focus modes on modern DSLRs. 1) How DSLR Autofocus Works 1.1) Active vs Passive Autofocus There are two types of AF (Autofocus) systems – Active and Passive. How your Digital Camera Works. RAW vs JPEG (JPG) - The Ultimate Visual Guide. RAW vs JPEG Overview Shooting RAW vs JPEG is a question that every photographer faces at some point.

There are many articles out there that cover the topic from the basics of size and quality, to all of the advanced technical details regarding color bits per channel, compression, firmware DCT processing, etc. So, here is the disclaimer, if you want the technical details regarding RAW vs JPEGs, Wikipedia and other sites have great technical primers discussing the basic technical differences, a brief Google search will also unearth loads of additional more in depth technical resources as well. This article is designed to teach you the differences between RAW and JPEG (JPG) from a pragmatic real world point of view. [Reminder: Learn more about RAW vs JPEG and other critical Photography Concepts in our Photography 101 DVD Workshop.

We will be using images shot from the Canon 5D Mark II with a Canon 50mm f/1.4 prime lens for all of our examples. General Details Regarding RAW and JPEG RAW vs. DSLR Autofocus Modes Explained. 'JPEG' File Format | Shutha. Save Options Figure 1 The first set of saving options When a JPEG file is saved, two panels are displayed. The first asks for the file name, where to save the file, the file format, and at the bottom of the panel are some options (shown above).

Most of the "Save" options will be greyed-out as the JPEG format can not hold extra features, such as Layers. The important part here though, is in the "Colour" section. 'JPEG' Compression Figure 2 The JPEG options panel The most important JPEG setting is in the Image Options section which allows three ways to set image quality from '0' to '12'. • Type the value within the Quality field.• Use the drop-down list to choose Low, Medium, High or Maximum.• Use the slider.Which method is used is unimportant as they all have the same result. NOTE: Normally the word maximum means what is says, the highest value. Figure 3 The biggest gains in compression are between Quality '12' to Quality '8'. 'JPEG' Damage Figure 5 The JPEG blocks of 8x8 pixels Quick Summary. Strobist: Lighting 101: Synching Your Flash. When your flash is connected to your camera, it syncs automatically.

When it is off camera, you have to take care of this yourself. And there are several ways to do it. In the photo above, I synched everyone else's flash to my camera to to get "one of those lucky moments. " Except it wasn't luck. I made it happen over and over again for this shot. More on that in a minute. The Wire If you are a beginner (and presumably on a budget) you'll want to sync your camera with a simple wire, also known as a sync cord. As we said before, using a universal translator on both your camera and your flash will allow you to sync it with a simple audio cord. (If you are using an LP160 flash, you already have the jack on your flash and will not need the second translator.)

This is about as cheap and simple as it gets. For the record, I always have a sync cord with me at a shoot as a backup, even when I am using wireless remotes, as we'll talk about below. Sync With a Slave Wireless Sync Via Radio. Strobist: Lighting 101 - Understanding Your Flash. (Photo by Strobist reader GreggBK) So let's talk about the basic gear you'll need to learn how to light, beginning with your flash. Generally, most people at this point will have a DSLR, a lens or two and a typical flash. (I.e., the removable kind that mounts to the top of your camera, not the built-in pop-up kind.) If so, you have already bought the expensive stuff. The gear to use that flash off-camera is surprisingly, refreshingly cheap. But before we get to that, let's take a moment and talk about your flash The Bare Essentials So, here's what your flash absolutely has to have: The ability to work in manual mode, and to do so at different power settings.

And that's it. Most flashes, including the one you probably already have, include that capability. So take a quick look at your flash and see if it can go into manual mode, or "M". Since we're going to learn to use that flash off-camera, we'll have to synchronize it with your shutter so your flash will go off when you take the photo. Virtual Lighting Studio - Interactive portrait lighting. The ambient light represents the light coming from the studio environment. You can turn it on or off and change its color and intensity. If you're lost and need some help, click here. But you probably know that...

Click on any help text to hide this. This is a schematic view of the studio. These are all the available models for lighting. These slots are used to capture your light setups. You can save a picture of your capture on your device by using the "Save As... " command of your browser on the capture thumbnails. This button is used to share or bookmark your current settings. This is the main view which displays your lit subject as seen through your camera. The garbage is used to clear your captured light setups. Here you can turn on or off your lights. The solo button enables you to temporarily visualize the effect of a single light in your setup. A gel can be added on a light to change the light color.

This displays the intensity of the light. Copy of Lighting by ferhan khan on Prezi. Copy of Aperture by ferhan khan on Prezi. Composition by ferhan khan on Prezi. Camera Composition by shelby kanka on Prezi. Using Your Camera’s Histogram to Take Better Digital Photographs. The histogram is one of the best ways to check for accurate exposure in the camera, and yet it's underused by many photographers. Use this tutorial to learn to use histograms in-camera and as part of further Photoshop processing. 1. Understand What the Histogram Represents A histogram is a two-dimensional graph that most digital cameras record for each exposure taken. It's a simple graph - it keeps track of all the tones in a photograph, from dark (on the left side) to light (on the right). Spending time looking at histograms, whether in the display of your digital camera or on the computer screen, will make them more familiar and a useful tool for taking exposures.

Histograms look very different depending on the scene, the color and the light in each photo. Here are some examples of different photos and their histograms. 2. One thing to avoid is to try to emulate a histogram - they look very different based on what's in the photograph. 3. 4. 5. 6. 7. 8. Conclusion. Balancing Light Bulbs with Strobes - Photography & Video Tutorial. Lesson 59: Shooting Framed Artwork Without Glare Or Reflections. :: Zil Fotografie MBO niveau 2:: In dit filmpje wordt wat verteld over de Polaroid-camera. Deze wordt verderop behandeld. Kleinbeeldcamera Ook wel kleinbeeldformaat of full-frame in de digitale fotografie, is een opnameformaat van 24 bij 36 mm in de fotografie.

Het woord wordt zowel voor camera's als voor film en sensors gebruikt. Een kleinbeeldcamera is een fotocamera die opnamen maakt van 24 bij 36 mm. De opname kan gemaakt worden met een sensor (als het een digitale camera betreft) of op 35 mm brede geperforeerde film. Een strook film wordt gewoonlijk geleverd in een lichtdichte cassette of cartridge en biedt meestal plaats aan 12, 24 of 36 opnamen. Het formaat is in 1912 ontwikkeld door Oscar Barnack voor de Leitz-camerafabrieken als compact alternatief voor de toen gangbare 6 cm-rolfilm. Middenformaatcamera De term middenformaat wordt gebruikt in de fotografie om een bepaald film formaat aan te duiden. De meest gebruikte filmformaten binnen het middenformaat zijn 6×6 cm (vierkant) en 6×4.5 cm (rechthoekig). Photography Tips, Essential Skills, Quickly Transform Your Photos, by Karl Taylor.

Metering mode tutorial - spot, partial and evaluative metering modes explained. Photography composition basics - truth about the rule of thirds, symmetry, repetition and rhythm. Visual Composition — Simplification. Simplification is the technique of reducing a composition to only the most essential elements that support the visual statement. This technique is particularly difficult for photographers. Studio settings are controlled, but in the case of street photography, improvisation and off-the-cuff shooting situations, its often impossible to control things "in the frame" that don't support the composition.

Landscape, architectural photography and interiors present challenges of unnecessary elements as well. Simplification presents a challenge to lessen the impact of extraneous subjects. This can involve reframing, changing the view point, getting in closer or moving back (to diminish proportion), focus and other techniques to bring out the necessary elements to the picture. It should be noted here that simplification implies minimalism. For example, lets say you're shooting a skyline at night and there is a lamp post in the frame. Behind the Glass Part 2: Focal Length. San Diego City College Materials for Students. Variables that affect exposure. Tips for Sharper Photos | Rule of Thirds Photography. Digital SLR Camera Basics | Shutter Speed. DOF. Using Your Digital Camera-Contents. DSLR Autofocus Modes Explained. Focusing Modes | Understanding Autofocus Modes.

DSLR Camera Focus Tips. Photography Basics | TimKainu.com. Digital Photography 1 on 1: Episode 25: Metering Part I. Digitale Doka. Copypix.be. De keuze van de lens in composities | DIGITALE•FOTOGRAFIETIPS. Untitled Document. The Big Stopper from LEE Filters - 10 Stop Neutral Density Filter. Informatie - Brandpuntafstanden ten opzichte van elkaar. Boek & Soft Hasselt - Boeken Digitale fotografie - het complete naslagwerk. Nicole S. Young. What Is Deadpan Photography? The photographs of August Sander: Twentieth-century man. Kennisbank.