Westcott
Westcott 4631D Parabolic Umbrella Front Diffusion Cover
★★★★★
Achieve Soft, Controlled Lighting with Ease The Westcott 4631D Parabolic Front Diffusion Cover transforms your parabolic umbrella into a portable octabank-style light source. By diffusing the light output, this cover creates soft, flattering illumination for portraits and other subjects. Specifi...
$29.90*
View on Amazon
✓ In Stock on Amazon.com
*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.
Notice a mistake? Let Us Know
Overview
Achieve Soft, Controlled Lighting with Ease
The Westcott 4631D Parabolic Front Diffusion Cover transforms your parabolic umbrella into a portable octabank-style light source. By diffusing the light output, this cover creates soft, flattering illumination for portraits and other subjects.
Specifications:
- Brand: Westcott
- Model: 4631D
- Type: Parabolic Front Diffusion Cover
- Color: White
- Material: Nylon
- Light Loss: Diffuse light by one full stop
Key Features
Create the effect of an Octabank
Perfectly paired with studio strobes
Diffuse light by one full stop
Quick assemble for your convenience
Specifications
Product Type
Front Diffusion Cover
Compatibility
Parabolic Umbrella
Light Diffusion
One full stop
Intended Use
Studio strobes
Assembly
Quick assemble
Effect
Octabank-like light
Pros & Cons
👍 Pros
- Transforms a parabolic umbrella into an Octabank-like light source, offering a unique lighting quality
- Optimized to be perfectly paired with studio strobes, ensuring professional lighting results
- Diffuses light by one full stop, providing a softer, more even illumination
- Designed for quick assembly, allowing for efficient setup and breakdown on location or in the studio
- Helps create a broad, flattering light output suitable for portraits and product photography
👎 Cons
- Requires a parabolic umbrella to function, as it is a front diffusion cover, not a standalone modifier
- The diffusion effect is a fixed one full stop, offering no variable light reduction
- Primarily intended for use with studio strobes, which may limit its versatility with other light sources
- While quick to assemble, it still adds a component to the overall lighting setup complexity
- The "Octabank effect" is an approximation and may not perfectly replicate a dedicated Octabank's light signature
Frequently Asked Questions
What is the primary function of the Westcott 4631D Parabolic Umbrella Front Diffusion Cover?
The primary function of this cover is to create the effect of an Octabank, diffusing light by one full stop when used with a parabolic umbrella.
Is this diffusion cover compatible with all types of studio lights?
This diffusion cover is perfectly paired with studio strobes, ensuring optimal performance with these light sources.
How much light diffusion does this cover provide?
The Westcott 4631D cover is designed to diffuse light by one full stop, softening the output.
Is this product difficult to set up?
No, it features a quick assemble design for your convenience, allowing for efficient setup.
Related Products
