Best Portable Softbox for Canon Speedlite 600EX II-RT
The Canon Speedlite 600EX II-RT is a powerhouse of a flash, but even its advanced metering can’t hide the harsh, directional shadows of a bare bulb. Finding a softbox that is portable enough for wedding venues yet sturdy enough for wind-swept outdoor portraits is a constant struggle for Canon shooters. After years of testing everything from velcro-on “pillows” to complex umbrella rigs, I’ve found that the MagMod MagBox system is the definitive gold standard for this specific flash. Let’s dive into the best options available today.
Our Top Picks at a Glance
Best Portable Softbox for Canon Speedlite 600EX II-RT: Detailed Reviews
MagMod MagBox 24 Octa View on Amazon
The MagMod MagBox 24 Octa is, in my opinion, the most revolutionary modifier for speedlite users. Designed to work seamlessly with the MagGrip 2 (sold separately), it snaps onto your Canon 600EX II-RT using powerful neodymium magnets. This means no more fumbling with velcro or screw-clamps in the dark. The internal diffusion is incredibly even, eliminating the hot spots that plague cheaper, shallow boxes. I particularly love the integrated gel slot, which allows you to color-correct your flash without taking the whole rig apart. While it requires the MagMod ecosystem to function, the build quality is tank-like. The only minor drawback is the total weight when the MagRing and MagGrip are attached, but the speed of setup more than compensates. It delivers a beautiful, circular catchlight in the eyes that makes it look like you used a much larger studio strobe.
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Godox S2 Bracket with 80x80cm Softbox View on Amazon
If you want the most “bang for your buck,” the Godox S2 bracket paired with their 80x80cm (32-inch) softbox is unbeatable. The S2 bracket is a significant upgrade over the original S-type; it features a removable rubber block that allows it to grip the Canon 600EX II-RT head securely without scratching it. Because it uses a Bowens mount, you aren’t just limited to the included softbox—you can attach almost any studio modifier to your speedlite. The 80x80cm size is the sweet spot for half-body portraits, providing soft transitions and excellent coverage. You’ll notice the materials are slightly thinner than premium Westcott or MagMod options, and the umbrella-style ribs can be a bit stiff during initial assembly. However, for the price of a single high-end bracket, you get a full kit that produces professional-grade lighting in a highly portable, foldable package.
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Neewer 24×24-inch Softbox with S-Type Bracket View on Amazon
The Neewer 24×24-inch softbox is the entry point for many photographers, and for good reason. It’s incredibly affordable and surprisingly effective. The kit includes an S-type bracket that clamps onto the 600EX II-RT’s head, which I find much more secure than the old velcro-strap models. This softbox “pops” open like a reflector, making it very quick to deploy. While it lacks the internal baffle complexity of higher-end boxes, the double diffusion layers do a decent job of softening the light. Be aware that the build quality of the bracket’s handle is plastic-heavy, so I wouldn’t recommend over-tightening it. For small product photography or headshots on the go, it’s a fantastic tool that fits into a tiny carrying bag. It’s an honest, no-frills modifier that gets the job done without breaking the bank, though it may struggle in very windy outdoor conditions.
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Westcott Rapid Box Switch Octa-M View on Amazon
Westcott’s Rapid Box Switch Octa-M is a masterpiece of engineering for the working pro. Its umbrella-style opening mechanism is the smoothest I’ve ever used—you can literally set it up in seconds. The “Switch” system is the real selling point; you can swap out the mounting plate to use it with your Canon 600EX II-RT today and a Profoto or Elinchrom strobe tomorrow. The internal silver lining is highly reflective, maximizing the output of your speedlite, which is crucial when you’re fighting the sun. The diffusion material is neutral, so you won’t see those annoying yellow color shifts that occur with cheaper fabrics. It is a bit pricey, and the Speedlite insert is sold separately, but the structural integrity and light quality are top-tier. I find this lens exceptional for creating that “high-end” look with nothing more than a single speedlite on a stand.
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Lastolite Ezybox Speed-Lite 2 View on Amazon
The Lastolite Ezybox Speed-Lite 2 is a unique beast. Unlike the others on this list, it doesn’t require a light stand or a heavy bracket. It attaches directly to the head of your Canon 600EX II-RT using a clever silicone strap and tensioning dial. This makes it the ultimate choice for “run-and-gun” photography where you might be holding the flash in one hand while shooting with the other. Despite its small 22x22cm size, it features two layers of diffusion and an internal folding mechanism that ensures no light leaks out the back. It’s perfect for macro photography or adding a soft fill-light during a reception. You’ll notice that because it’s so small, the softening effect isn’t as dramatic as a 24-inch box, but for its intended purpose—portability and speed—it is unrivaled. It fits into any camera bag side pocket, making it a permanent resident in my kit.
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Buying Guide: How to Choose a Portable Softbox
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| MagMod MagBox 24 | Speed & Professionals | ★★★★★ | Check |
| Godox S2 Bracket | Value & Versatility | ★★★★☆ | Check |
| Neewer 24×24 | Budget Starters | ★★★★☆ | Check |
| Westcott Rapid Box | Commercial Build | ★★★★★ | Check |
| Lastolite Ezybox | Run-and-Gun | ★★★★☆ | Check |
Frequently Asked Questions
Will a softbox make my 600EX II-RT overheat?
Softboxes trap heat, and the 600EX II-RT is known for its thermal protection. If you are shooting at full power in rapid succession, the flash will eventually slow down to cool. To prevent this, use a softbox with a bracket that leaves a small gap for airflow (like the S2 bracket) and try to shoot at 1/4 power or lower when possible.
Do I need a special bracket for the Canon 600EX II-RT?
Yes, I highly recommend an S-type bracket or a MagMod MagGrip. The 600EX II-RT is a relatively large speedlite with a weather-sealed body that can be slippery. Standard “cold shoe” mounts that come with cheap softboxes are often flimsy and can easily break under the weight of a modifier, risking your expensive flash.
Can I use a large 48-inch softbox with this speedlite?
You can, but you shouldn’t expect studio-strobe results. The 600EX II-RT has a Guide Number of 60m, which is powerful for a speedlite but weak compared to a 400Ws strobe. A 48-inch box will eat up a lot of light, often requiring you to shoot at full power, which drains batteries and increases recycle times significantly.
Does the softbox affect the radio transmission (RT) of the flash?
Generally, no. The radio signals used by the Canon RT system are quite robust and can pass through nylon and diffusion materials easily. However, if you use a softbox with heavy metallic lining or large metal brackets, you might see a slight reduction in range, though in my experience, it remains reliable up to 30 meters.
What is the best shape for a speedlite softbox?
Octagonal (Octa) boxes are preferred for portraits because they create a natural, round catchlight in the eyes that mimics the sun. Square or rectangular boxes are better for product photography or as “rim” lights where you want a clean, straight edge to the light. For general use, the Octa shape is the most versatile.
Final Verdict
If you are a working professional who needs to transition from bare-bulb to soft light in seconds, the MagMod MagBox is worth every penny of its premium price. For those just starting out or working in a controlled studio environment, the Godox S2 system offers incredible flexibility. Finally, if you just need something to throw in your bag “just in case,” the Lastolite Ezybox is the king of portability for your Canon 600EX II-RT.