The four major directions of photography lighting (front light, side light, backlight, top light) modeling logic, emotional expression to anti-glare light control practice

1. Front Light: the double-edged sword of color saturation and absolute flatness

The light source is located directly behind the photographer, and the light is shining directly in front of the subject:

• Optical styling features:
• All surfaces of the subject facing the camera receive direct light almost equally, and all shadows cast fall on the invisible blind spot at the rear;
• There are almost no boundaries between light and dark and no visible shadows in the picture;
• Advantages and Disadvantages Analysis:
• Advantages: It can restore the inherent and brilliant colors of the subject to the greatest extent, and has low exposure tolerance requirements. It is very suitable for shooting blue skies, rainbows, hot air balloons, sea of flowers and commercial ID photos;
• Fatal Weakness: Lack of transition between light and dark shadows, complete loss of the subject’s three-dimensional sense, undulations of bones and depth of space, the face appears flat and wide, and the surface texture of the object is completely obliterated;
• Practical rule: If taking portraits, try to avoid direct sunlight at noon, otherwise the model will not only have a stiff expression and be unable to open her eyes, but the face will look like a flat piece of paper without any fluctuations.

2. Side light (45° front side light and 90° front side light): the light of the soul that sculpts three-dimensionality and texture

The light source forms an obvious angle with the subject-camera visual axis:

1. Front side light (45° oblique side light - classic golden light position for portraits):

• The light enters from about 45 degrees above the subject, forming a triangular high-light area on the cheek on the backlit side, which is the Rembrandt Lighting recommended by the masters of Western classical oil painting;
• The bright parts and dark parts each occupy a certain proportion, which perfectly outlines the towering three-dimensional sense of the bridge of the nose and cheekbones of the human body, with both soft transition and deep emotion;

2. Positive side light (90° side light - the king of texture and dramatic contrast):

• Light shines directly from the left or right of the subject, forming a 'half-bright and half-dark', extremely contrasting yin and yang face light effect;
• Texture micro-amplification effect: Very small surface undulations, skin wrinkles, rock textures, and sculpture lines will cast fine shadows under side light, creating a sense of dramatic tension, vicissitudes, and power. It is a perfect match for shooting hard-core documentary portraits, faces of the elderly, and scenery rock textures.

3. Backlight / Rim Light: Phnom Penh outline and dreamy atmosphere code

The light source is located directly behind or behind the subject, facing the camera lens:

• Optical styling features:
• The front of the subject is in shadow backlight, and the strong edge light outlines a bright circle of golden hair outline light (Rim Light) on the subject's hair, shoulders, plant hair or animal hair;
• Produces an extremely shocking 'air cutting sense', which separates the subject from the dark background, giving it a sacred, dreamy, and romantic visual poetry;
• Backlight control and anti-rollover practice:
• Prevent facial blackening: When taking portraits in backlight, if you meter the bright sky in the background, the face will turn into a pure black silhouette; at this time, you must use a reflector (silver white surface) to fill in the model's face from diagonally below, or install a flash on the top of the camera with a soft diffuser to fill in light;
• Flare elimination in the front lens group: Directly shining a strong light source on the lens can easily cause flare and fogging, causing the contrast to return to zero. Be sure to install the hood, or use your palm above the lens to block the non-imaging stray light that directly enters the front lens group.

4. Top Light: The 'Skull Eyes' Trap and Redemption Plan in the Scorching Sun at Noon

The light source is located directly above the subject's head (the most typical ones are the bright sun from 11:30 to 13:30 noon, and the undiffused downlight in the center of the ceiling):

1. Disastrous modeling consequences:

• The light shines straight down from the eyebrow bone, the bridge of the nose, and the chin, casting a bottomless black hole shadow in the eye socket (commonly known as 'skull eye/panda eye'), and forming a long black beard shadow under the nose. No matter how good-looking the model is, the model looks haggard and old under this light;

2. Three practical rescue methods:

• ① Open Shade: Bring the model into the shade of a building or under the shade of a big tree, avoid direct overhead light, and use the diffuse light of the open sky as a soft and smooth light for shooting;
• ② Reflective board bounces and diffuses from bottom to top: A white reflective board is placed flatly under the model's chest and abdomen to softly bounce and refract the strong light from the top light into the eye sockets, eliminating the thick dark shadows under the eyes and creating crystal clear eyes;
• ③ Use semi-transparent soft light board for overhead shielding: Ask the assistant to hold the soft light screen (Diffuser) above the model's head to instantly soften the dazzling hard point light source into a huge area of soft skylight.