Key Considerations:
* Size of the Dish: Larger dishes create a softer light with a wider spread. Smaller dishes create a more focused, contrasty light.
* Shooting Distance: The closer you are to your subject, the smaller the apparent size of the dish and the harsher the light. The further you are, the larger the apparent size and the softer the light.
* Portait Type:
* Headshots: A smaller dish may be preferable for a more dramatic, focused light on the face.
* Half-body or Full-body: A larger dish will be needed to provide even coverage and softer light across the entire subject.
* Modifier Type: Some beauty dishes are more aggressive and require larger sizes to be effective.
* Personal Preference: Ultimately, the best size is the one that gives you the look you prefer. Experimentation is key!
Common Sizes and Their Applications:
* 16-17 inch (40-43cm):
* Pros: Very portable, great for on-location shoots where space is limited. Produces a more contrasty, specular light. Good for emphasizing texture and detail. Can be used closer to the subject.
* Cons: Can be too small for full body portraits, producing hot spots and uneven lighting. Can be a bit harsh on skin if not used carefully. Requires more precise placement.
* Best For: Headshots, beauty shots where you want to emphasize detail, travel photography.
* 20-22 inch (50-56cm):
* Pros: A good all-around size for portraits. More forgiving than smaller dishes. Can be used for headshots, shoulders-up, and some half-body shots. Still relatively portable. Offers a balance between contrast and softness.
* Cons: Might be slightly too small for full-body portraits, especially if you want a very soft look.
* Best For: Versatile choice for studio and location work, general portraiture, headshots, and upper body shots. A great starting point if you only want one beauty dish.
* 27-28 inch (68-71cm):
* Pros: Creates a softer, more flattering light. Better for full-body shots, providing more even coverage. More forgiving in terms of placement.
* Cons: Less portable than smaller dishes. Requires more power from your strobe. Can be *too* soft for some tastes, especially if you prefer a more dramatic look.
* Best For: Full-body portraits, beauty and fashion photography where soft, even lighting is desired, portraits with multiple subjects.
* Larger than 30 inches (76cm+):
* Pros: Very soft, even light that wraps around the subject. Excellent for full-body portraits and large groups.
* Cons: Least portable, requires a large studio space, and may need a more powerful strobe. Can be difficult to manage in windy conditions outdoors.
* Best For: Large studio productions, fashion editorials, beauty work where you want a very diffused and flattering light.
General Guidelines:
* Start with a 22-inch beauty dish if you're unsure. It's a versatile size that will work for most portrait situations.
* Consider your shooting style. Do you prefer a more dramatic, contrasty look or a softer, more diffused light?
* Think about your subjects. Do you primarily photograph headshots, half-body portraits, or full-body portraits?
* Experiment with different sizes. The best way to find the right size is to try out different options and see what works best for you.
* Consider the type of beauty dish. White beauty dishes produce a softer light than silver beauty dishes.
Additional Tips:
* Grid: Adding a grid to your beauty dish will further control the spread of light and increase contrast. Useful for accentuating features and preventing light spill.
* Diffusion Sock: A diffusion sock softens the light even further, reducing harshness and creating a more flattering look.
* Distance: Adjusting the distance between the beauty dish and your subject is crucial. Moving it closer will increase contrast and intensity, while moving it further away will soften the light and reduce intensity.
* Feathering: Angle the beauty dish so the light falls off the edge of the subject. This can create a more flattering light and reduce hotspots.
Ultimately, the choice of beauty dish size is a personal one. By considering the factors above and experimenting with different options, you can find the perfect size to create beautiful and flattering portraits. Remember to always test and refine your setup to achieve the desired results.