Here's a breakdown:
The Tip: Squint
* Why it works: Squinting does several things:
* It reduces the amount of detail entering your eye.
* It makes highlights appear brighter.
* It makes shadows appear darker.
* It helps you focus on the overall *shape* of the light on your subject.
* How to do it: Just partially close your eyes like you're looking at something really bright, even if it's not.
* What to look for WHILE SQUINTING:
* The Brightest Spot (Highlight): Where is the light source hitting your subject most directly? This is usually where you'll see the most detail. Knowing where your light is and the hottest point will really help you pose them.
* The Deepest Shadow: Where is it darkest? This will tell you where the light *isn't* hitting. Pay attention to the shape of the shadows, as this can reveal the shape and direction of the light source.
* The Transition: How does the light fall off from the highlight into the shadow? Is it a soft, gradual transition (soft light) or a sharp, distinct line (hard light)?
Why this is helpful for portraits:
* Understanding Form: Light and shadow define form. By seeing where the light is hitting and where it's not, you can understand the shape of your subject's face (or body).
* Better Posing: You can pose your subject so that the light is flattering, emphasizing their best features and minimizing any flaws.
* More Dynamic Portraits: By understanding the interplay of light and shadow, you can create portraits that are more interesting and visually appealing.
* Recognizing Light Quality: Squinting helps you quickly assess whether the light is soft and diffused (like on a cloudy day) or hard and direct (like bright sunlight). This will inform your camera settings and how you pose your subject.
Example:
Imagine you're photographing someone outside on a sunny day.
1. Before Squinting: You see lots of details, maybe some harsh shadows, and you're not quite sure where to position your subject.
2. Squint: You squint your eyes. Suddenly, you notice the *brightest* spot on their forehead and nose. You see the *darkest* shadow under their chin. You also see how the light *transitions* from bright to dark - is it a sharp line, or a gentle fade?
3. Application: Now you know to either position the person where the light is most flattering (maybe turn them slightly so the light hits their cheekbone nicely), or you might move them into open shade (where the light is softer and more even).
Beyond the Squint:
Once you get comfortable with squinting, start paying attention to these things even without squinting. Train your eye to see light and shadow as shapes and tones, not just as general brightness.
Practice:
The best way to learn is to practice. Go outside (or even just look around your house) and squint at different things. Try to identify the highlights, shadows, and the transition between them. Then, try photographing a friend or family member, using the squinting technique to help you see the light.
In summary: Squint. Look for highlights, shadows, and the transition between them. Practice!