filters & flash com 241 photography i. color filters tungsten (indoor) light –tungsten light...

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Filters & Flash COM 241 Photography I

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Page 1: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Filters & Flash

COM 241

Photography I

Page 2: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Color Filters

• Tungsten (indoor) light– Tungsten light gives image yellowish cast

• Blue filter (80A)

• Lose 2 f-stops

Page 3: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

• Fluorescent light– Gives image blue/green cast

• Use FL or 30M filter (magenta filter)

• Lose 1 f-stop

Page 4: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

• To set WB

– Press WB button on camera back

– Set white balance to AWB or desired setting by turning dial while looking at LCD panel

Page 5: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

All purpose filters

• Neutral density– Absorbs light from all parts of light spectrum

– Comes in various densities

– Lose about 1 to 13 stops

• Skylight– Used to protect lens

– No lose in f-stop

– Also eliminates ultraviolet light

Page 6: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

• Polarizing– Reduces reflections– Also darkens blue sky– Lose about 1 stop

Page 7: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Critique of direct flash

• Throws unnatural black shadows behind subject– Lighting usually looks too harsh

• Sometimes there’s uneven lighting– Subjects in front look lighter, in back darker

• Sometimes get bad reflections– People wearing glasses

Page 8: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Problems with using direct flash:

Bright spots, reflections

Uneven lighting(light foreground, dark background)

Page 9: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Dark, sharp shadows

Page 10: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Bounce flash

• Advantages:– Diffused lighting– Even illumination

• Usually aim strobe at ceiling and bounce flash off the ceiling– Lighting that bounces covers a larger area when

it reaches subject – Scene is more evenly lit, and diffused

Strobe

Subject

Ceiling

Page 11: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

To photograph this drug search, the photographer used the light from a small portable strobe bounced off the ceiling. Bounce strobe spreads an even, almost shadowless light throughout the room. Joanne Rathe Strohmeyer / Boston Globe

Page 12: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

• Can also bounce light off a wall– More directional effect

Strobe

Subject

Page 13: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

A 45-degree bounce flash can look like natural light. Here one flash was bounced off the corner between the ceiling and wall.

Page 14: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

With strobe bounced off a wall outside the picture area, the light appears to come from the candles. Mimicking available light with strobe increases the overall illumination without losing the natural feel. Ken Kobre / Boston Phoenix

Page 15: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

When a bounce flash works best• Small to medium size room

– Auditoriums don’t work

• Need a light-toned surface– Dark walls absorb the light

Page 16: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

Change the ISO• Use for low light situations

– Allows higher shutter speed or smaller aperture

• 100 / 200 / 400 / 800 / 1600– Each increment doubles camera’s sensitivity to

light– 100 > 400

• Shutter speed 15 > 60 or f-stop from f-4 to f-8

Page 17: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

• On Cannon digital cameras to change ISO:– Push up arrow on

back of camera– ISO is displayed

on back LCD panel

– Use dial to increase or decrease ISO

Page 18: Filters & Flash COM 241 Photography I. Color Filters Tungsten (indoor) light –Tungsten light gives image yellowish cast Blue filter (80A) Lose 2 f-stops

• Advantages: shoot in low light situations w/o direct flash

• Disadvantages: print is grainier, less resolution as ISO increases