ExposureExposureGray Card and White BalanceGray Card and White Balance

Purpose:Purpose:

To explore exposure in both camera. To understand white balance. To learn to download images. To learn to save to server. To be introduced to Bridge CS3 and

PhotoShop CS3

GoalsGoals To understand and control light using a camera. Know the three variables effecting exposure. Know and be able to use a photographic gray card. Understand and be able to use bracketing techniques. Understand the terminology used by photographers describing exposure and

white balance. Understand the different qualities of natural and artificial light. Understand how the temperature of a light source effects the quality of light. Understand and be able to use white balance to control the qualities of light. Understand and be able to obtain metadata in Adobe CS3 Bridge and

PhotoShop. To create a contact sheet using Adobe Bridge and PhotoShop CS3. To create a print representing a balance of highlights and shadows

demonstrating proper exposure.

Subject:Subject:

Human face with a gray card next to it.

Directions:Directions: Set your camera’s white balance to the daylight setting (sun mode). You will be taking a series of photos all photos are to have these

characteristics. All photos with an ISO 800 (indoor) setting. All photos so they show an 18% gray card and a face.

Take a series of photos in three different settings; Under florescent light (like the classroom), Under direct daylight (sun), Under trees (in shade) during daylight, Under incandescent light (standard household light bulb).

In each of the 4 locations take 5 photos bracketing your exposure. +2 ( four times the amount of light) +1 (twice the amount of light) Normal (according to the light meter) -1 (half the amount of light) -2 (one forth the amount of light)

Record your exposure on the exposure log.

You will have taken 20 photos when you are done.

Bracketing:Bracketing:

Purpose: To vary settings to insure proper lighting and

exposure and allow for a variety of lighting conditions.

Stop of LightStop of Light

One “Stop of Light” equalsOne “Stop of Light” equals

One change in shutter speed (+ or -)One change in shutter speed (+ or -)

OROR

One change in ƒ/stop (+ or -)One change in ƒ/stop (+ or -)

OROR

One change in ISO (half or double) One change in ISO (half or double)

Stop of LightStop of Light

It is an amount of light.It is an amount of light. Each stop is a doubling or halving of the Each stop is a doubling or halving of the

amount of light.amount of light.

BracketingBracketing

Normal — what the light meter Normal — what the light meter sayssays

+1 stop (double the amount of +1 stop (double the amount of light)light)

-1 stop (half the amount of light)-1 stop (half the amount of light)

Normal

BracketingBracketing

Normal — what the light meter saysNormal — what the light meter says +1 stop (double the amount of light)+1 stop (double the amount of light) +2 stops (4x the amount of light)+2 stops (4x the amount of light)

Normal +1x +2x

BracketingBracketing Normal — what the light meter saysNormal — what the light meter says -1 stop (half the amount of light)-1 stop (half the amount of light) -2 stops (1/4 the amount of light)-2 stops (1/4 the amount of light)

Normal -1x -2x

Exposure Log:Exposure Log: Completed Exposure Log

BracketingBracketing

+2 stops (4x the amount of light)+2 stops (4x the amount of light) +1 stop (double the amount of light) +1 stop (double the amount of light) Normal — what the light meter saysNormal — what the light meter says -1 stop (half the amount of light)-1 stop (half the amount of light) -2 stops (1/4 the amount of light)-2 stops (1/4 the amount of light)

Normal+1x+2x -1x -2xƒ/4 @ 1/250 ƒ/5.6 @ 1/250 ƒ/8 @ 1/250 ƒ/11 @ 1/250 ƒ/16 @ 1/250

BracketingBracketing

+2 stops +2 stops (4x the amount of light)(4x the amount of light)

+1 stop +1 stop (double the amount of light) (double the amount of light)

Normal Normal — what the light meter says— what the light meter says

-1 stop -1 stop (half the amount of light)(half the amount of light)

-2 stops -2 stops (1/4 the amount of light)(1/4 the amount of light)

Normal

+1x

+2x

-1x

-2x

ƒ/22 @ 1s

ƒ/22 @ 1/2

ƒ/22 @ 1/4

ƒ/22 @ 1/8

ƒ/22 @ 1/15

Requirements —Requirements —What to turn inWhat to turn in::

20 digital images on server Place in purple folder

1. 1 contact sheet, 20 images

2. 4 prints a) 1 Each lighting type

b) Should be best exposure

3. Self-evaluation sheet

4. Exposure log

Exposure Log:Exposure Log: Completed Exposure Log

Requirements:Requirements: Self-evaluation Sheet (there are 2 sides) Fill in top portion completelyFill in top portion completely

GradingGrading

This project is worth 100 pointsThis project is worth 100 points