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Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn....

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1 Lighting Three-Point Lighting Three lights key light (lights key side) fill light (lights dark areas) back light (halo) Key Light Fireplug by Christophe Bouffartigue
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Page 1: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

1

Lighting

Three-Point Lighting

Three lightskey light (lights key side)fill light (lights dark areas)back light (halo)

Key Light

Fireplug by Christophe Bouffartigue

Page 2: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Key Light

main lightdominant angledarkest shadowcreates specular highlights

Fill Light

Fill Light

extend illuminationsoften lightsimulates ambient (reflected, secondary) light

Page 3: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Fill Light

test fill lights and key lights separatelycan use false colorsuse multiple fill lights

Multiple Fill Lights

Just Fill Lights

Page 4: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Back Light

defining edge, halo effectdistance objects from background

Back Light

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

All Lights

Page 5: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Just Back Lights

Another Example

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

Positioning of Key Light

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

spot light15-45 degree to side15-45 degree above camera

Page 6: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Positioning of Key Light

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

Positioning of Fill Light

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

opposite of key light (wrt camera)lower than key lightat most 50% of key-light (add up lights)

Positioning of Fill Light

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

Page 7: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Positioning of Back Light

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

behind the subjectabove cameralower than key lightat most 50% of key-light (add up lights)

Positioning of Lights

Jeremy Birn. Tutorial on 3point light (http://www.3drender.com/light/3point.html)

Back Lights in Computer Graphics

light behind subject will not create halo (unless subject has fuzzy edges)might have to use multiple lights, not entirely behind subject

Page 8: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Lighting

All Quiet on the Western Front

Lighting

I was very much aware of the superiority of the photography in American movies to that of the British films. At eighteen I was studying photography, just as a hobby. I had noticed, for instance, that the American always tried to separate the image from the background with backlights, whereas in the British films the image melted into the background. There was no separation no relief.

Alfred Hitchcock in interview with François Truffaut

Lighting

Suspicion

Page 9: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Lighting

All Quiet on the Western Front

Lighting

Are Parents People?

Lighting

Great Expectations

Page 10: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Lighting

Nosferatu

Lighting

Great Expectations

Lighting

Destiny

Page 11: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Low-angle Key Light

Cat and the Canary

Low-angle Key Light

Side Light

Dr. Caligari

Page 12: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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High-Angle Lighting

Dr. Mabuse

Key-to-Fill Ratio

Ratiointensity key light : intensity fill light

Key-to-Fill Ratio ∞:1

Page 13: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Key-to-Fill Ratio 4:1

Key-to-Fill Ratio 2:1

Low Key-to-Fill Ratio

Jeremy Birn. (digital) Lighting & Rendering

interiors with high ambient light (reflective surfaces such as tiles, etc.)lack of strong sunlight (overcast days, scattered light)creates cheerful mood

Page 14: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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High Key-to-Fill Ratio

Jeremy Birn. (digital) Lighting & Rendering

dramaticnight-scenes

High Key-to-Fill Ratio

Maltese Falcon

High Key-to-Fill Ratio

Maltese Falcon

Page 15: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

15

Lighting

Queen Christina

Lighting

Queen Christina

Lighting

Queen Christina

Page 16: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Shadows without Light

Shadows without Light

Shadows without Light

Page 17: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Shadows

can hit at world outside the sceneadd atmosphere

Shadows

Page 18: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Shadows

Shadows

Gobos and Cookies

masks between light and scenethrow interesting shadows

http://www.lighttrader.com/rosco_gobos.htm

Page 19: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Gobos and Cookies

Shadows indoor scenelight through window

Exercise

Page 20: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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Page 21: Lighting - DePaul Universityovid.cs.depaul.edu/Classes/GPH425-F06/week8b.pdf · Jeremy Birn. (digital) Lighting & Rendering zinteriors with high ambient light (reflective surfaces

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