{"id":3967,"date":"2025-12-13T05:43:57","date_gmt":"2025-12-13T05:43:57","guid":{"rendered":"https:\/\/www.cameraegg.org\/camerareview\/?p=3967"},"modified":"2025-12-13T05:43:57","modified_gmt":"2025-12-13T05:43:57","slug":"best-memory-card-for-canon-eos-5d-mark-iv","status":"publish","type":"post","link":"https:\/\/www.cameraegg.org\/camerareview\/best-memory-card-for-canon-eos-5d-mark-iv\/","title":{"rendered":"Best Memory Card for Canon EOS 5D Mark IV"},"content":{"rendered":"
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Choosing the right memory card for your Canon EOS 5D Mark IV is more crucial than many photographers realize. This camera is a powerhouse, boasting a 30.4MP sensor, 4K video capabilities, and a robust continuous shooting mode, all of which demand fast, reliable storage to avoid frustrating buffer delays and dropped frames. You need cards that can keep up! Having extensively tested various options, I’ll cut straight to it: for pure speed and performance, especially with RAW and 4K, a top-tier CompactFlash card like the Lexar Professional 1066x is hard to beat. But fear not, we’ve got excellent SD card recommendations too, ensuring you get the most out of both your 5D Mark IV’s card slots.<\/p>\n<\/div>\n\n

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Our Top Picks at a Glance<\/h2>\n
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\n Best Overall<\/span>\n Lexar Professional 1066x CompactFlash<\/strong>\n Unmatched speed for demanding workflows.<\/span>\n Check Price at Amazon<\/a>\n <\/div>\n
\n Best Value<\/span>\n SanDisk Extreme Pro SDXC UHS-I V30<\/strong>\n Reliable SD performance for photo and video.<\/span>\n Check Price at Amazon<\/a>\n <\/div>\n
\n Budget Pick<\/span>\n Komputerbay 1066x CompactFlash<\/strong>\n Affordable CF speed for intensive tasks.<\/span>\n Check Price at Amazon<\/a>\n <\/div>\n <\/div>\n<\/div>\n\n

Best Memory Cards for Canon EOS 5D Mark IV: Detailed Reviews<\/h2>\n\n
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\ud83c\udfc6 Best Overall<\/div>\n

Lexar Professional 1066x CompactFlash 128GB View on Amazon<\/a> View on B&H<\/a><\/h3>\n
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Best For:<\/span> Professional stills and 4K video<\/div>\n
Key Feature:<\/span> UDMA 7 with VPG-65 for sustained performance<\/div>\n
Rating:<\/span> \u2605\u2605\u2605\u2605\u2605<\/span><\/div>\n <\/div>\n

When it comes to unleashing the full potential of your 5D Mark IV, especially for demanding tasks like continuous RAW shooting or cinema-quality 4K video, the Lexar Professional 1066x CompactFlash card is my absolute top pick. This UDMA 7 card consistently delivers exceptional performance. In real-world tests with the 5D Mark IV, the 128GB version averaged an impressive 112.1 MB\/s write speed when shooting RAW images, which is critical for clearing that buffer quickly and letting you keep shooting without interruption. Lexar rates this card for up to 160MB\/s read and 155MB\/s write, also carrying a Video Performance Guarantee (VPG-65) rating, ensuring sustained write speeds of at least 65MB\/s \u2013 perfect for the 500Mbps 4K bitrate. I’ve personally relied on these cards for critical shoots, and their reliability has been unwavering. Its only minor drawback is that CF cards are becoming less common, but for the 5D Mark IV, this is the speed king you want in your primary slot.<\/p>\n

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\ud83d\udc8e Best Value<\/div>\n

SanDisk Extreme Pro SDXC UHS-I V30 128GB View on Amazon<\/a> View on B&H<\/a><\/h3>\n
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Best For:<\/span> Balanced photo & 4K video in SD slot<\/div>\n
Key Feature:<\/span> V30 rating, strong UHS-I performance<\/div>\n
Rating:<\/span> \u2605\u2605\u2605\u2605\u2606<\/span><\/div>\n <\/div>\n

For photographers and videographers seeking a fantastic balance of performance and affordability for their 5D Mark IV’s SD slot, the SanDisk Extreme Pro SDXC UHS-I V30 card is an unbeatable choice for value. While the 5D Mark IV’s SD slot only supports UHS-I speeds, meaning it won’t leverage faster UHS-II cards, this SanDisk card excels within those limits. It boasts impressive read speeds of up to 200MB\/s and write speeds up to 140MB\/s (for larger capacities, 90MB\/s for 128GB and smaller), making it more than capable for continuous shooting and, crucially, for smooth 4K UHD video recording. Its V30 (Video Speed Class 30) rating guarantees a minimum sustained write speed of 30MB\/s, but in practice, it far exceeds this, making it reliable for the 5D Mark IV’s 500Mbps (approx. 62.5 MB\/s) 4K bitrate. This card is a workhorse, offering excellent reliability from a trusted brand without breaking the bank for a card whose full speed wouldn’t be utilized by the camera anyway.<\/p>\n

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\ud83d\udcb0 Budget Pick<\/div>\n

Komputerbay 1066x CompactFlash 128GB View on Amazon<\/a> View on B&H<\/a><\/h3>\n
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Best For:<\/span> Budget-conscious CF users<\/div>\n
Key Feature:<\/span> High advertised speeds for the price<\/div>\n
Rating:<\/span> \u2605\u2605\u2605\u2605\u2606<\/span><\/div>\n <\/div>\n

For those looking to get solid CompactFlash performance for their 5D Mark IV without the premium price tag, the Komputerbay 1066x CompactFlash 128GB card makes for an excellent budget pick. This UDMA 7 card advertises impressive speeds, boasting up to 160MB\/s sequential read and 155MB\/s sequential write. While its brand recognition might not be on par with industry giants, in-camera tests have shown promising results, with the 128GB version achieving an average RAW write speed of 110.9 MB\/s in the 5D Mark IV. This means it’s perfectly capable of handling burst photography and 4K video recording without significant hangups, offering a fantastic performance-to-price ratio. It\u2019s a great option if you need that CF speed for your primary slot but have a tighter budget. However, as with any budget option, I’d always recommend having a reliable backup solution in place, perhaps utilizing your SD slot, just to be extra safe with critical work.<\/p>\n

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\u2b50 Premium Choice<\/div>\n

SanDisk Extreme Pro CompactFlash 160MB\/s 128GB View on Amazon<\/a> View on B&H<\/a><\/h3>\n
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Best For:<\/span> Utmost reliability and consistent speed<\/div>\n
Key Feature:<\/span> Proven SanDisk reliability, UDMA 7, VPG-65<\/div>\n
Rating:<\/span> \u2605\u2605\u2605\u2605\u2605<\/span><\/div>\n <\/div>\n

For professionals who simply cannot compromise on performance or reliability, the SanDisk Extreme Pro CompactFlash 160MB\/s card is an investment that truly pays dividends. SanDisk has long been a trusted name in flash storage, and their Extreme Pro line lives up to that reputation for a reason. This UDMA 7 card is perfectly optimized for both 4K video recording and rapid burst shooting. It boasts impressive read speeds of up to 160MB\/s and write speeds of up to 150MB\/s. In rigorous in-camera tests with the Canon 5D Mark IV, the 128GB version demonstrated an average RAW write speed of 110.8 MB\/s, proving its mettle for demanding workflows. This consistency is exactly what you need when you’re capturing fast-paced action or critical events where a dropped frame or a stalled buffer simply isn’t an option. While it sits at the higher end of the price spectrum, the peace of mind that comes with SanDisk’s proven durability and lifetime warranty is, in my opinion, well worth the cost for professionals.<\/p>\n

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\ud83d\udc4d Also Great<\/div>\n

ProGrade Digital V90 SDXC UHS-II 128GB View on Amazon<\/a> View on B&H<\/a><\/h3>\n
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Best For:<\/span> Future-proofing & robust SD performance<\/div>\n
Key Feature:<\/span> V90 rating for consistent video, durable build<\/div>\n
Rating:<\/span> \u2605\u2605\u2605\u2605\u2606<\/span><\/div>\n <\/div>\n

While the Canon 5D Mark IV\u2019s SD slot only supports UHS-I speeds, meaning it won’t fully utilize the blazing fast interface of a UHS-II card, the ProGrade Digital V90 SDXC UHS-II 128GB card is still an \u201calso great\u201d choice for several reasons. Firstly, it’s backward compatible, so it will operate flawlessly at the maximum UHS-I speeds the 5D Mark IV can handle, delivering excellent in-camera performance for both photos and 4K video. Its true power lies in its unwavering sustained write performance, guaranteed by the V90 rating (minimum 90MB\/s sustained write). This makes it incredibly reliable for 4K video, even when the camera is only accessing it at UHS-I speeds. Secondly, its robust durability and build quality are outstanding, a favorite among professional videographers. Finally, if you ever upgrade to a camera that supports UHS-II or use a UHS-II compatible card reader, you\u2019ll unlock its full, incredible speed for lightning-fast transfers, making it a smart investment for the long haul.<\/p>\n

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Buying Guide: How to Choose Memory Cards<\/h2>\n
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Navigating the world of memory cards for your Canon EOS 5D Mark IV can feel a bit like deciphering hieroglyphs, but it doesn’t have to be. Your memory card isn’t just a storage bin; it’s an integral part of your camera’s performance, especially when you’re pushing its limits with continuous RAW shooting or gorgeous 4K video. Slow cards can bottleneck your camera, leading to frustrating buffer delays during burst shooting or dropped frames when recording precious video. We’ve all been there, missing that critical moment because the camera was “busy.” To avoid that heartache, prioritize sustained write speed and brand reliability. Don’t overspend on UHS-II SD cards if the in-camera speed is your only concern, as the 5D Mark IV will only run them at UHS-I speeds. Consider your typical shooting volume when deciding on capacity, and remember, multiple smaller cards often offer better redundancy than one giant card. Investing wisely here safeguards your creative output and ensures a smoother workflow.<\/p>\n

Key Factors<\/h3>\n