Best Softbox for Canon Speedlite 600EX II-RT
The Canon Speedlite 600EX II-RT is a powerhouse, but its raw output can be unforgivably harsh for portraits and event work. To truly unlock its potential, you need a modifier that balances portability with beautiful, feathered light. After years of shooting weddings and studio headshots with this specific flash, I’ve found that the right softbox transforms this speedlite into a studio-quality key light. While many options exist, the MagMod MagBox Pro 24 Octa currently stands as the gold standard for speedlite modifiers.
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Best Softbox for Canon Speedlite 600EX II-RT: Detailed Reviews
MagMod MagBox Pro 24 Octa View on Amazon View on B&H
If you value speed above all else, the MagMod MagBox Pro 24 Octa is a revelation. I’ve used this at dozens of fast-paced receptions where I only had seconds to set up a light. Using the MagGrip 2 (sold separately) on your 600EX II-RT, the flash simply snaps onto the ring. The light quality is exceptionally soft thanks to the internal baffle and high-quality diffusion fabric. The 24-inch diameter is the “sweet spot” for speedlites; it’s large enough for soft wrap but small enough that the 600EX II-RT can still fill the box without significant hot spots. The integrated gel slot is a stroke of genius, allowing you to color-correct for indoor tungsten light without fumbling with Velcro. The only downside is the price—it’s a premium ecosystem—but the time saved on set is worth every penny.
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Godox S2 Bracket Softbox Kit View on Amazon View on B&H
The Godox S2 bracket is the unsung hero of speedlite photography. It solves the biggest problem with the 600EX II-RT: mounting it to professional modifiers. Unlike the older S-type brackets, the S2 features a removable rubber block that allows the flash head to sit deeper, ensuring the light hits the center of the softbox. This kit usually includes a 60x60cm (24″) foldable softbox that provides excellent diffusion for its price point. What I love most is the Bowens mount; it means you can use this bracket with almost any professional studio modifier, not just the included softbox. The build is surprisingly sturdy, though the silver lining inside isn’t quite as reflective as high-end Westcott or MagMod options. For anyone transitioning from on-camera flash to off-camera lighting, this is the most logical and cost-effective step you can take.
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Neewer 24-inch S-Type Softbox View on Amazon View on B&H
If you’ve just dropped several hundred dollars on the 600EX II-RT and your budget is tight, the Neewer S-Type Softbox is a reliable workhorse. It uses a “clamshell” bracket that grips the head of your Canon flash securely without scratching it. While the materials feel a bit more “plasticky” than the Godox or MagMod, the light it produces is virtually identical in a side-by-side test. It’s a pop-up style softbox, which means it can be a little frustrating to fold back into its circular carry bag (think of it like a sunshade for a car), but once you master the “twist and fold” motion, it’s very portable. It’s an ideal choice for a second or third light setup where you need a simple fill. Be aware that the bracket doesn’t tilt quite as smoothly under heavy load, so avoid attaching larger accessories to it.
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Westcott Rapid Box Switch Octa-M View on Amazon View on B&H
Westcott is famous for light quality, and the Rapid Box Switch Octa-M is their flagship speedlite modifier. The “Switch” system means you can swap the mounting plate if you ever move from Canon speedlites to larger strobes like the Profoto B10 or Godox AD400 Pro. The construction is top-tier; the metal ribs are durable, and the diffusion material is color-neutral, ensuring your Canon’s skin tones remain accurate. It opens like an umbrella, making it incredibly fast to deploy. I find that the Octa shape provides a more natural, round catchlight in the eyes compared to square boxes, which is a major plus for headshots. It is more wind-resistant than cheaper options, making it a better choice for outdoor location work. It’s an investment, but it’s a tool that will likely outlast several camera bodies.
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Lastolite Ezybox Speed-Lite 2 View on Amazon View on B&H
The Lastolite (now Manfrotto) Ezybox Speed-Lite 2 is unique because it doesn’t require a light stand or a bracket. It straps directly onto the head of the 600EX II-RT. This makes it the ultimate “run-and-gun” softbox. If you’re a photojournalist or an event photographer who needs to move through a crowd while keeping the flash on your camera’s hot shoe, this is your best bet. It’s small (approx 22x22cm), so the light isn’t as soft as a 24-inch box on a stand, but it is vastly superior to the “tupperware” style diffusers. It features an internal and external diffuser which helps eliminate the dreaded hot spot. While it’s not meant for studio-style portraits, its ability to soften shadows while maintaining a compact profile is unmatched for handheld work.
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Buying Guide: How to Choose a Softbox for the 600EX II-RT
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| MagMod MagBox 24 | Pro Weddings | ★★★★★ | Check |
| Godox S2 Kit | Studio Hobbyists | ★★★★☆ | Check |
| Neewer S-Type | Beginners | ★★★★☆ | Check |
| Westcott Rapid Box | Editorial | ★★★★★ | Check |
| Lastolite Speed-Lite | On-Camera Event | ★★★★☆ | Check |
Frequently Asked Questions
Can the 600EX II-RT fill a 48-inch softbox?
Technically yes, but it isn’t ideal. The 600EX II-RT has a small light source. When placed in a large 48-inch box, you’ll likely see a bright center and dark edges, even with dual diffusion. To properly fill a box that size, you’d need to use a multi-flash bracket to mount two or three 600EX units together. For a single flash, stick to 24-32 inches for the best results.
Does a softbox interfere with the 600EX II-RT’s radio transmission?
No. One of the best features of the II-RT version is that it uses 2.4GHz radio waves for triggering, not optical pulses. Unlike older flashes that need a “line of sight” to the master unit, radio waves easily pass through the fabric of a softbox. You can bury your speedlite deep inside a modifier or even behind a wall, and it will still fire reliably.
Is a round softbox better than a square one?
It depends on your subject. Octaboxes (round) are generally preferred for portraiture because the catchlight in the subject’s eyes looks like the sun or a natural round source. Square or rectangular softboxes are often used to mimic window light or to control the spill of light more precisely along the sides of a subject or background.
Will these softboxes fit the older 600EX-RT?
Yes. The physical dimensions of the 600EX II-RT and the original 600EX-RT are almost identical. Any bracket-style softbox (like the Godox S2 or Neewer S-type) or magnetic system like MagMod will work perfectly on both generations. The main differences between the flashes are internal (recycle speed and heat management), not the external head shape.
How much light power do I lose when using a softbox?
Expect to lose between 1.5 to 2 stops of light when using a double-diffused softbox. The 600EX II-RT is powerful, but you may find yourself shooting at 1/4 or 1/2 power more often. If you find you’re running out of juice, try removing the internal baffle or zooming the flash head to 24mm to help push more light forward through the front diffusion panel.
Final Verdict
For most professional photographers using the Canon 600EX II-RT, the MagMod MagBox is the clear winner for its sheer efficiency on set. However, if you are a student or a hobbyist building your first home studio, the Godox S2 kit provides the most versatility for future equipment upgrades. If you strictly shoot events handheld, the Lastolite Ezybox is a “must-have” accessory that fits right in your camera bag’s side pocket.