Basic photography & intro to dslrs

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Transcript of Basic photography & intro to dslrs

  • 1. Tour of the basic elements of PhotographyBasic Photography &INTRODUCTION TO DSLRs

2. Types of Digital Cameras 3 Main classifications - Compacts - Digital SLR - Mobile devices 3. Compact Cameras or Point and Shoot digital Cameras (P&S) - Commonly referred to as consumer digital cameras. - Represent probably 90% of all digital cameras on the market - Typically small, compact and lightweight - Targeted at broad majority - Typically very User-Friendly - Image Quality has improved drastically 4. Digital SLR (DSLR) SLR Stands for Single Lens Reflex - Have larger sensors, resulting in greater image quality - Tend to favor manual control, lacking many automatic settingsfound on P&S - Much larger and heavier - Ability to interchange system lenses 5. Mobile Devices Always with you !! - Good Image quality in mobiles like pureview 808 or lumia 920 - Newer devices have various scene modes - always in your pocket - gives to opportunity to make photographs anytime 6. Can u guess the camera from which these pics are taken ? 7. DSLRVsCompactcameras!! So What is the REAL difference between adigital SLR and a point and shoot camera? 8. DSLRVsCompactcameras!!The short answer is.....Image Quality But Why? How can a 6 megapixel DSLR take a better picture than a 10megapixel point and shoot?Because Size Matters! 9. DSLRVsCompactcameras!! How the digital sensor work ?? - Each digital image is made from millions of tinysquares, known as pixels. - Essentially, an image is recorded by tiny microlenses(pixels) which make up the cameras sensor 10. DSLRVsCompactcameras!! All Pixels are not created equal! -A digital sensor is essentially made up of millions of tiny micro-lenses (pixels) - Pixels are analog devices which record light and color data - Larger Sensors contain larger pixels, which are much better incollecting this data 11. DSLRVsCompactcameras!!The sensor size of different cameras !! 12. DSLRVsCompactcameras!!Cameras Compared 13. DSLRVsCompactcameras!!Full-Frame versus APS-C Sized Sensors 14. Getting a Good shot While there are hundreds of factors which canmake a photo good, it is still a relative term, andgood to one person may not be good to someoneelse. For our purposes we will refer to good in thesense of a correct exposure. 15. 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 dark parts(shadows) of an image. How much of a range in which you can capture detailfrom light to dark is referred to as the Dynamic Range. As you are about tosee, there can be many correct or good exposures There are three factors which influence the exposure of your image: -Shutter Speed -Aperture -ISO 16. Refers to how long the shutter is open,exposing the image sensor to light. (how long the camera sees the picture) Measured in Seconds, from 30 down to 1/8000Shutter Speed 17. Shutter SpeedMEASURES HOW LONG LIGHT IS LET INTO THEFILM/CAMERA Common values include sec, 1/8 second, 1/1000second etc Shorter time means less time for light to get into thecamera Shorter time reduces blurriness 18. Shutter SpeedFASTER SPEEDADVANTAGES Reduces blurriness as image is seenonly briefly great for sports events.DISADVANTAGES Less time for light to enter camera Requires bright conditions 19. Shutter SpeedSLOWER SPEEDADVANTAGES Great for darker conditions (more time forlight to enter the camera)DISADVANTAGES Increased chance of blurriness Often requires a tripod be used for steadiness. 20. Fast Shutter Speeds (1/600 and up) are used to stopmotion and will freeze the subject. 21. Slow Shutter Speeds (1/60 or slower) can be used toportray movement or speed 22. Very Slow Shutter Speeds (5 sec. or slower) can beused in very low light situations to obtain correctexposure, or achieve dramatic effects. 23. Very Very Slow Shutter Speeds (30 sec. or slower)can be used in very low light situations to createlight paintings. 24. Beware!As your shutter speed decreases, your chances ofgetting a blurry image increase because you musthold the camera steady for a longer period. 25. Aperture An aperture is defined as a hole or openingthrough which light is admitted. Inside the camera lens is a system of bladeswhich open and close to increase or decrease theopening through which light passes into thecamera 26. Aperture Often referred to as an f-stop, aperture is usuallyrepresented by: f/1.8, or f/5.6 A Smaller # means a wider opening and isreferred to as a larger value (e.g. A large apertureof 2.0, a small aperture of 22) The wider the lens is open(larger aperture value),the more light gets in (you can use faster shutterspeeds) 27. ApertureHOW MUCH LIGHT IS SEEN Ranges from about 1.8 to 32 A higher number (i.e. 32) means less light isseen. A lower number (i.e. 1.8) means more light isseen. 28. ApertureHIGHER F-stop (i.e. 32)ADVANTAGES Increased depth of field, i.e. imagebackground is not blurryDISADVANTAGES Needs more light, i.e. slower shutter speed. 29. ApertureLOWER F-STOP (i.e. F1.8)ADVANTAGES Lets plenty of light in! Better to use in darkersettings. Less blurry since faster shutter speed may be neededto compensate for more light.DISADVANTAGES No depth of field, i.e. background of image likely outof focus. 30. Aperture 31. 31F-STOP IMPACTLow F-stop High F-stop 32. Depth of Field 33. ISO Refers to the light sensitivity of the sensor HIGH ISO value means the sensor will be MOREsensitive to light, meaning it will take LESS LIGHTto get the right exposure Similar to Film Speeds in 35mm format 34. ISO Typically ranges from 100-1600 Newer Digital cameras have a higher range(up to 64000) and also lower values. Using High ISO values causes the sensor toproduce much more heat, which creates digitalnoise in images. Noise is similar to film grain and causes loss offine detail in images It is more visible in dark parts of an image and isgenerally more noticeable when displayed onscreen than in print 35. ISO 36. ISO 37. ISO 38. White Balance White balance doesnt really affect your exposure,just the appearance of colors in the image Different light sources cast their own colors,which cannot usually be noticed with the nakedeye. White Balance is essentially the cameracompensating for the color cast of the light inorder to reproduce the correct colors 39. Correct ExposureAperture f/5Shutter speed -1/60Iso 2000Wrongly exposed !! 40. Correct Exposure A perfect balance between iso , f-stop and shutterspeed Auto white balance does a good job !! But for potraits cloudy white balance giveswarmer picture Flash compensation and exposure bias adjustedcorrectly !! 41. Tips for Taking Good Photos Photography in Classrooms and Schools Be aware of the background Can clutter be cleared up? Cables and other distracting stuff laying around? Kids love to make hand signals We cant use these photos. Remember sky/ground ceiling/floor and framing41 42. Tips for Taking Good Photos42Too much ceiling !! 43. Tips for Taking Good Photos43 44. Tips for Taking Good Photos44Photos of GroupsTry to line up in even rows without some people too far in theforeground and others too far back.If the back of the group is too close to a wall you might getunwanted shadows.Can everyone see the camera. If not, their face will not be in thephoto.People wave, but remind them not to cover someone elses face.If outside, try to have your back to the sun, watch out for yourshadow. If the sun is too bright people will have to squint. 45. Tips for Taking Good Photos45The guys way inthe front of therest make it toodifficult to see theothers far in theback.Waving handsexpressions andsigns often hideothers face !! 46. Tips for Taking Good Photos46Action Shots People speakingIt can be really difficult to take a photo of someonewhile they are talking. Try to time the photo whenthey are in between words to avoid funny faces. Hand MovementTry to time the photo in between hand motions toavoid blurriness. 47. Tips for Taking Good Photos47Images Could use to express makinga point.Light background is better contrast. 48. Questions ??Thank you !!