Technicality Of Camera
- 1. Shubham Ray
- 2. CAMERA A Camera is an optical instrument used to capture an image. Camera, in photography, is a device for recording an image of an object on a light sensitive surface. It is essentially a light tight box with an aperture to admit light focused onto a sensitized film or plate.
- 8. The 360-degree camera takes half dome to full-circle panoramic photos and videos using back- to-back lenses. Like action cameras, some of them are also water resistant and mountable on many surfaces, such as on top of cars, helmets, or drones. Above all, they take the most realistic pictures and videos with stunning panoramic views that you can truly immerse yourself in, virtual reality style.
- 9. Film cameras
- 11. The focal length of a lens is the distance over which a lens focusses a parallel beam of light to one point. Usually the image sensor is placed at the focal point so the subject being photographed is in focus. The focal length tells us the angle of view for a particular lens — and also, how much of a scene will be captured when using that lens. The focal length also gives a sense of magnification. The shorter the focal length is, the wider the angle of view will be. Similarly, the longer the focal length is, the narrower and more “zoomed in” the field of view will be. FOCAL LENGTH
- 12. DEPTH OF FIELD Inphotography,thedepthoffieldisoneofthe mostwidelyrecognizedterms.ifyou’renotfamiliar withwhatitisexactly,youmightnotbeutilizingit tothebestofitsabilityinyourphotographs.when wefocusalensonasubject,thelensisfocussedat totakeasharpimageatafixeddistancefromthe lens.Anythingcloserorfurtherawayfromthat distanceisoutoffocus.Thiseffectiscalledthe depthoffieldeffect.Overall,thedepthoffield referstothezoneofsharpnesswithinanimage whereitselementsappearinfocus. Thiszoneof focuscanbeeithershallowordeep.Ashallow depthoffieldmeansthatthebackgroundis blurredwiththesubjectstandingoutinfocus whereasDeepdepthoffieldmeansthatthe backgroundisaboutassharpasthesubject.
- 13. When it comes to depth of field, here are the three main factors that will affect how you control it: The Aperture The aperture is the opening which lets light into the camera. A large aperture means a small f-number and a shallow depth of field while a small aperture means a larger f-number and a deeper depth of field.
- 14. The Subject’s Distance to the Camera Focal Length of the Lens To keep it simple, the longer the focal length, the shallower the depth of field will be. The depth of field is shallower the closer the subject is to the camera. As the camera moves away from the subject, the depth of field becomes deeper.
- 15. OPTICAL IMAGE STABILIZATION Optical image stabilization is a technique that reduce blurring associated with the motion of a camera or other imaging device during exposure. There are two types of image stabilizations: Lens stabilization : In this case the stabilization apparatus resides within the lens. Lens stabilization is also more appropriate for large lens and low-light situations. In-camera stabilization : In this case, the stabilization is achieved by adjusting the sensor inside the camera. It works with all lenses. It means you can purchase lighter and less expensive lenses as your camera is already stabilized from within.
- 16. Exposure Time Exposure is a combination of three factors that together work to tell us how much light accumulates on the sensor to make the image.
- 17. The f-stop setting determines how much light is allowed to enter the lens and pass through. It also determines how much in front and behind the subject is in focus (the depth of field). The difference between aperture and f-stop is that the aperture refers to the diameter of the circular entrance of the lens while the f-stop refers to the ratio of the focal length as it relates to the diameter of the aperture.
- 18. Automatic Exposure Bracketing (or AEB) is used for taking High Definition Range(HDR) photos. Many DSLR’s come equipped with Automatic Exposure Bracketing which helps photographers automatically to take multiple images of the scene at different exposure settings. Automatic Exposure Bracketing
- 19. A camera’s autofocus system knows how to adjust the camera lens to help get the subject in focus. Each of the sensors assesses the changes in contrast at various points in the image and helps to achieve maximum sharpness. The three factors that influence autofocus are light level, subject contrast and the motion of the subject or camera. As the camera attempts to autofocus, it opens the aperture to the largest possible amount to allow for more light. Having a good autofocus in your camera, is similar to having perfect vision — it offers high clarity, detail, and a distinct scene.