General Guidelines:
* Smaller Dishes (16-22 inches):
* Pros:
* Harsher, more contrasty light: Creates more dramatic shadows and highlights, accentuating features like cheekbones.
* More portable: Easier to transport and set up on location.
* Faster fall-off: Light falls off more quickly, creating a more focused beam and preventing light spill onto the background.
* Better for closer shots: Ideal for headshots and tighter portraits where you want more defined features.
* Cons:
* More prone to "hot spot" in the center: Requires careful positioning and feathering.
* Less forgiving of skin imperfections: Highlights texture more.
* Less even coverage for full-body shots.
* Medium Dishes (23-27 inches):
* Pros:
* Balance between soft and hard light: Provides a good compromise between the two extremes.
* Versatile: Suitable for a range of portrait styles and shot types, from headshots to waist-up.
* Good for both men and women: Works well for accentuating features on men and softening skin on women.
* More forgiving of skin imperfections than smaller dishes.
* Cons:
* Still requires careful positioning.
* Not as soft as larger dishes, nor as dramatic as smaller ones.
* Larger Dishes (28-32 inches and up):
* Pros:
* Softer, more flattering light: Creates a wider, more diffused beam that wraps around the subject.
* More even coverage: Better for full-body portraits and group shots.
* More forgiving of skin imperfections: Smoothes out texture and minimizes blemishes.
* Can be used from a greater distance.
* Cons:
* Less contrast: May lack the dramatic shadows some photographers desire.
* Less portable: Bulky and more difficult to transport.
* More likely to spill light onto the background.
* Requires more power from your strobe.
Key Considerations:
* Distance to Subject: The closer you are to your subject, the smaller the light source appears, and the harsher the light becomes. If you typically shoot from a close distance, a larger dish will help soften the light. If you shoot from further away, a smaller dish might be more appropriate.
* Subject Gender/Features:
* Men: Smaller beauty dishes can be great for highlighting masculine features like strong jawlines and cheekbones.
* Women: Larger beauty dishes tend to be more flattering, creating softer, more even skin tones. However, this is just a guideline; you can use smaller dishes on women to create more dramatic portraits.
* Personal Style: Experiment! The "best" size is subjective and depends on your artistic vision. Do you prefer high-contrast, dramatic images, or soft, dreamy portraits?
* Studio Space: Consider the size of your studio. A larger beauty dish needs more space to be effective.
* Budget: Larger beauty dishes are generally more expensive.
Recommendations:
* For a Versatile, All-Around Option: A 22-27 inch beauty dish is a good starting point for most portrait photographers. It offers a good balance of softness and contrast and is suitable for a variety of subjects and shot types.
* For Mostly Headshots or Dramatic Portraits: A 16-22 inch beauty dish will give you more control and create more defined features.
* For Mostly Full-Body Portraits or Flattering Light: A 28-32 inch or larger beauty dish will provide softer, more even illumination.
Remember to Factor in the Grid and Diffuser:
* Grids: Adding a grid to a beauty dish narrows the beam of light and reduces light spill. This can be useful for creating more dramatic shadows and controlling the light's direction. Grids essentially make the light *act* a bit more like it's coming from a smaller source.
* Diffusers (socks): Softening socks or diffusers can be placed over the front of the beauty dish to further soften the light and reduce harsh shadows. This is an alternative to using a larger beauty dish.
Final Thoughts:
It's always best to rent or borrow different sizes of beauty dishes to test them out and see which one best suits your needs and style. There's no single "right" answer. Experimentation is key to finding what works best for you!