Basic Photography Using Flash

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Basic Photography Using Flash. Basic Photography Concepts. Automatic vs. Creative Modes EV Equivalent Value Lighting considerations Histogram Add Flash to you shot Guides as starting points. Automatic vs. Manual. Automatic is easy Quality is good I’m in a hurry - PowerPoint PPT Presentation

Text of Basic Photography Using Flash

  • *On Camera Flash*Basic Photography Using Flash

    On Camera Flash

  • *On Camera Flash*Basic Photography ConceptsAutomatic vs. Creative Modes EV Equivalent ValueLighting considerationsHistogram Add Flash to you shotGuides as starting points

    On Camera Flash

  • *On Camera Flash*Automatic vs. ManualAutomatic is easy Quality is good Im in a hurry Manual is difficult

    To many things do I need to think about.What are the advantages? The difference is consistency and control.

    On Camera Flash

  • *On Camera Flash*Automatic vs. Creative Modes To what extend do you want to have control?Creative modesAV , TV, PManualCustom FeaturesFirst curtain vs. second curtainHigh speed syncHistogram

    On Camera Flash

  • *On Camera Flash*Histogram in CameraTo the left the picture is to dark, to the right its too brightBalanced is in the centerA valuable tool in camera

    To dark To bright

    On Camera Flash

  • *On Camera Flash*Exposure ValueThree choices, all with limitationsAperture 22, 16, 11, 8, 5.6, 4, 2.8, 2, 1.4,1.2 Shutter Speed100, 200,400,800.8000 ISO- 100, 200, 400, 800,1600. 24,000

    On Camera Flash

  • *On Camera Flash*Lighting ConsiderationsWhat is your main light source?Direction of the lightColor TemperatureWhat affect do you want?Digital camera metering to 18% gray Increase exposure for whiteDecrease exposure for black

    Do I want, or need flash?

    On Camera Flash

  • *On Camera Flash*Using On-camera FlashBuilt in flash unitAdd on flash unitsA or B type unitsEX vs. EV unitsMetering with TTLConsider using EV changes on flash unit Camera Sync SpeedConsidering a purchase?Off camera flash subject for another time

    On Camera Flash

  • *On Camera Flash*Light Fall-Off(Inverse Square Law)Light SourceIlluminated area = 1 sq ftIlluminated area = 4 sq ft5ft5ftFor a given light source intensity:Twice the distance results in 1/4th illumination (i.e., 2 stops lower)Three times distance results in 1/9th illumination (i.e., >3 stops lower)Four times distance results in 1/16th illumination (i.e., 4 stops lower)

    Solutions:Decrease distance between closest & furthest subjectsBack away from closest subject as much as possibleUse Large Diffuser (limited effectiveness when on-camera)Use Bounce Flash (back wall, side wall, ceiling, reflector)

    On Camera Flash

  • *On Camera Flash*Flash Unit Guide NumberGuide Number shows the power of the flash unit.Useful tool to estimate exposure when distance is known:Guide Number / distance in feet= Aperture

    580 EXII7D(mm)1415Guide No4939f /(ft)(ft)2.81814412105.6978651144

    On Camera Flash

  • *On Camera Flash*Add Flash to CompositionAs your primary light Soft vs. hard light (demo flash)Direct vs. indirect light (demo)Light fall off (demo)Ambient light (Demo)Color Temperature (demo)Used a supplemental fill light Control shadows, Highlight subject, Create soft light, Contrast

    Light fall offFlash on subject is not affected EV, background is (Demo)Adjust EV as subjects appear further away (Demo bounce flash) Guide Number / distance in feet = Aperture

    On Camera Flash

  • *On Camera Flash*Direct vs. Indirect lightDirect light removes shadows and creates a flat picture.Direct light is a hard lightBounced flash softens light and skin tones

    On Camera Flash

  • *On Camera Flash*Soft vs. Hard LightLook at the skin tones between a soft and hard light.Notice reflection of light from flash

    On Camera Flash

  • *On Camera Flash*Light Fall OffExample shows how illumination is less the further apart the subjects are from the source.

    On Camera Flash

  • *On Camera Flash*Solution for Light Fall Off

    Consider bouncing flash to balance illumination on subjects at different distances.

    On Camera Flash

  • *On Camera Flash*Ambient LightIn addition to your main light, you need to consider ambient light.Tungsten add an orange color Fluorescent blue of green tint added

    On Camera Flash

  • *On Camera Flash*Watch out for glasses!

    Direct light reflects off glasses. Also, Red Eye comes from reflection off of the eye retina.

    On Camera Flash

  • *On Camera Flash*Color Temperature SolutionConvert your flash to correct ambient light

    On Camera Flash

  • *On Camera Flash*Light Fall OffUsing Flash the light remains constantFlash on subject is not affected by change in EVBackground illumination can be controlled with EV

    On Camera Flash

  • *On Camera Flash*Notice the back ground!

    By just changing the shutter speed you control the color and texture of the back ground.

    On Camera Flash

  • *On Camera Flash*Want more Shadow?

    Add flash and to the extreme. Adjust the angle and distance of the flash to control shadows.

    On Camera Flash

  • *On Camera Flash*Live DemoGrey scale demo showing manual vs auto exposure modes.Color demo showing manual vs auto color selectionAdditional examples

    On Camera Flash

  • *On Camera Flash*Starting PointsConsiderations/Rules of ThumbRead your equipment manual!Daylight- Rule 16: A 16, SS 100, ISO 100Flash on subject in Sun lightSun behind camera -3EV to -1EVSun at 90 degrees -2EV to 0EVSun behind subject -1EV to +1EVIndoor consider your color temperatureConsider bounce flash to direct or soften lightConsider shutter speed & ISO to supplement backgroundShoot Raw to have 16 bits of data per pixel to work with for flexibilityLook at the cameras RGB histogram Shoot a manual practice shot, then adjust the settings to your preferencePlay with flash - practice

    On Camera Flash

    ***What separates a photographer from a picture taker?

    With automatic, consider full automatic and Creative Modes.

    Learn photography by using manual settings and learn to play around

    Quality is in the eyes of others who see your work

    Control is flexibility to adapt or being creative in developing your style.

    *Automatic modes with presets for color, skin tomes or shutter speed

    Creative modes to give you specific controls

    Consider manual to give your total control

    Look into your cameras Custom Features

    Look at your manual to see how many standard features you can alter with Custom Features

    First and second curtain control camera metering versus when flash fires.

    Your cameras flash sync is set with a limited shutter speed. Expand your shutter speed with High Speed Sync Look at your cameras histogram for black and white loss and exposure*Why use manual?

    Consider your setting options.

    You must maintain balance with a combination of all three

    Limitation and tradeoffs with all three

    Considerations for using eachDepth of fieldBlurNoise

    *Outdoor Rule 16 as a starting pointIndoorAmbient light Kelvin colorsAlways first think about the direction of our light source

    Lighting affects the artistic style of your photo

    Digital cameras metering measures to 18% gray.Ansel Adams zone system Total values the camera captures only partial valuesall colors are relative to 18% gray

    How do you want your background to appear?

    Do you want to control shadows or contrast?

    *Is your flash built in or attached to the hot shoe?

    Direct flash issues, red eye, hard light, flat picture compensation

    What kind of flash units should I consider?

    TTL metering

    Consider EV both in camera and on flash

    Determine your cameras sync speed

    When purchasing, consider capability, and used vs. new

    **Look for your primary lightSoft light AM PM, or reflected off a larger sourceControl light fall off

    Supplemental light for contrast or overcome shadows

    Square EV as light falls off

    Know your flash guide number. What range can you cover width and depth*