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  • 1. Digital Single-Lens Reflex Camera http://dslrzone.blogspot.com/

2. IntroductionDigital Single-lens Reflex Camera, or DSLR, is a type of digital camera that provides the capability of interchanginglenses and wider photo-shooting options than normalconsumer cameras. It serves the purpose of capturing images in digital formatA DSLR contains a photographic lens, a viewfinder, a shutter,and an image sensor. http://dslrzone.blogspot.com/ 3. So What is the REAL difference between adigital SLR and a point and shoot camera?http://dslrzone.blogspot.com/ 4. But Why?How can a 6 megapixel DSLR take a better picture than a 10 megapixelpoint and shoot? Because Size Matters!http://dslrzone.blogspot.com/2006-06-01 5. - Each digital image is made from millions of tiny squares,known as pixels.- Essentially, an image is recorded by tiny microlenses(pixels) which make up the cameras sensor http://dslrzone.blogspot.com/ 6. When DSLR is not CapturingImage The photographic lens located in front of the camera directs lights into the camera body. Light is then reflected by the mirror to the pentaprism and finally travels to the viewfinder where photographers can observe the scene. Notice that the mirror is flipped down and the shutter covers the image sensor from recording lightshttp://dslrzone.blogspot.com/ 7. Design of a DSLRWhen Capturing an ImageThe image capturing processstarts when the shutter releasebutton is pressed. Notice themirror is flipped up from itsoriginal position, allowinglight to travel to the sensorarea. The shutter that coversthe image sensor is now fullyopened, and the image sensoris exposed under light and willbe capturing the image. http://dslrzone.blogspot.com/ 8. Specific PartThe Image Sensor The Introduction Image Sensor is the key device in DSLR, and serves the same function of capturing images as traditional films Image sensor is basically a silicon chip containing millions of light sensitive element called photosite, and is covered by a layer of color filter http://dslrzone.blogspot.com/ 9. All Pixels are not created equal! -A digital sensor is essentially made up of millions of tinymicro-lenses (pixels) - Pixels are analog devices which record light and colordata - Larger Sensors contain larger pixels, which are muchbetter and collecting this datahttp://dslrzone.blogspot.com/ 10. Digital Camera Features and Technologies Megapixels Determine the total size (Dimensions) of theimage recorded by camera - More MP does not always mean a better picture - Digital Image dimensions do not equal print dimensions - For example a full quality image from an 8 megapixel camera will produce a digital image measuring approximately 9X14inches but printing standards say that you should not print toPhoto Quality any larger than 8X10http://dslrzone.blogspot.com/ 11. Movement Compensation Refers to the cameras ability to correct small movements by theuser while taking a picture, in order to reduce the blur causedby camera shake. Very Useful in low-light or telephoto situations Represented differently by different companies: Nikon VR Vibration Reduction Canon IS Image Stabilization Pentax SR Shake Reduction Sony SSS Super Steady-Shot http://dslrzone.blogspot.com/ 12. Dust Reduction Dust is more of a problem in DSLRs due tochanging lenses Once dust gets on your sensor, it can bedifficult to remove Dust reduction is essentially a mechanismwhich shakes the cameras sensor to free anyclinging dust particles Special anti-static coatings or filters may alsobe usedhttp://dslrzone.blogspot.com/ 13. Exposure A correct or good exposure occurs when you maintain as much detail aspossible in both the very bright parts (highlights) as well as the very darkparts (shadows) of an image. How much of a range in which you can capturedetail from light to dark is referred to as the Dynamic Range. As you areabout to see, there can be many correct or good exposures There are three factors which influence the exposure of your image: -Shutter Speed -Aperture -ISO http://dslrzone.blogspot.com/ 14. Shutter SpeedThe shutter speed is the length of time the shutter is open. Acameras shutter performs the same function as a shutter in frontof a windowit keeps the light out. When the shutter isopened, light enters and is recorded as computer language onthe sensor and immediately written to the memory card. (Itsmore complex than this and I dont understand it all. Thecaptured data are changed by the cameras software if shootingin jpeg. Other changes may be made of shooting in certainmodes.) The longer the shutter is open the more light enters. On somecameras, shutter speeds range from 1/8000 Th to 30 seconds.Normal working ranges for outdoor photography range fromabout 1/30Th to 1/500Th of a seconddepending. Manycameras also have a B setting, which allows the shutter to beopened indefinitely. When set at B, the shutter remains openas long as the shutter button is pressed.http://dslrzone.blogspot.com/ 15. Aperture An is defined as a hole or opening throughwhich light is admitted. Inside the camera lens is a system of bladeswhich open and close to increase or decreasethe opening through which light passes intothe camerahttp://dslrzone.blogspot.com/ 16. ISO Refers to the light sensitivity of the sensor HIGH ISO value means the sensor will be MORE sensitive to light, meaning it willtake LESS LIGHT to get the right exposure Similar to Film Speeds in 35mm format ISO is a measure of the sensors sensitivity to light. A high ISO reacts to light inless time than a lower ISO. DSLRs typically have ISO settings that range form 100 to6400. Like shutter speeds and apertures, the difference between two adjacent ISOnumbers is equivalent of one stop. An ISO 100 setting requires twice the exposure asan ISO of 200 meaning the shutter speed has to be half as fast, or the apertureopened one f-stop, say, from f8 to f5.6http://dslrzone.blogspot.com/ 17. Backlight - eliminates dark shadows when light is comingfrom behind a subject, or when the subject is in the shade.The built-in f lash automatically fires to "fill in" the shadows. Beach/Snow - photograph beach, snow and sunlit waterscenes. Exposure and white balance are set to help prevent the scene from becoming washed out looking.ds. Use oftripod recommended.http://dslrzone.blogspot.com/ 18. Fireworks - shutter speed and exposure are set for shooting fireworks; pre-focusing & use of tripod recommended. Landscape - take photos of wide scenes. Cameraautomatically focuses on a distant object. Macro - take close-up shots of small objects, f lowers and insects. Lens can be moved closer to the subject than inother modes. Hold the camera steady or use a tripod.http://dslrzone.blogspot.com/ 19. Night Portrait - take photos of a subject against a night scene. The built-in f lash and red-eye reduction are enabled; shutter-speeds are low. Use of tripodrecommended.Night Scene - photograph nightscapes. Preprogrammed touse slow shutter speeds. Use of tripod recommended.http://dslrzone.blogspot.com/ 20. Party - take photos in a dim lit room; exposure and shutterspeed are automatically adjusted for room brightness.Captures indoor background lighting or candlelight. Hold the camera very steady when using this mode.http://dslrzone.blogspot.com/ 21. Portrait - main subject is clearly focused and thebackground is out of focus (has less depth of field). Bestwhen taking shots outside during the day. Shoot using a mid to long telephoto lens, stand close to your subject within the recommended camera range and, whenpossible, select an uncomplicated background that is far from the subject. http://dslrzone.blogspot.com/ 22. Sports (also called Kids & Pets)- take photos of a fastmoving subject; fast shutter speeds "freeze" the action.Best when shots are taken in bright light; pre-focusing recommended.Sunset - take photos of sunsets and sunrises; helps keep the deep hues in the scene.http://dslrzone.blogspot.com/ 23. TANK YOU VISIT AGAINhttp://dslrzone.blogspot.com/http://dslrzone.blogspot.com/