{"id":29990,"date":"2025-08-26T12:26:38","date_gmt":"2025-08-26T08:26:38","guid":{"rendered":"https:\/\/droneandcam.com\/post\/sony-a7iii-sd-cards-speed-capacity-and-choice\/"},"modified":"2025-09-23T11:42:22","modified_gmt":"2025-09-23T07:42:22","slug":"sony-a7iii-sd-cards-speed-capacity-and-choice","status":"publish","type":"post","link":"https:\/\/droneandcam.com\/en\/post\/sony-a7iii-sd-cards-speed-capacity-and-choice\/","title":{"rendered":"Sony A7III SD Cards: Speed, Capacity, and Choice"},"content":{"rendered":"\n

Choosing the right SD card<\/a> for your Sony A7 III is no easy task: write speed, capacity, UHS-II compatibility… It’s not easy to navigate. We’ll guide you to find THE memory card that will boost your photo and video performance, without breaking the bank. Spoiler: we’ve tested the best options on the market, and the answers to questions about the ideal speed class or capacity are finally here to save your photos (and your budget)<\/strong> ! <\/p>\n\n\n\n

\n\n\n\n\n\n
\n\n\n
\n \"SanDisk\n

SanDisk 512 GB Extreme PRO<\/h3>\n

Rating: 4.8\/5<\/p>\n

\n \u2605 \u2605 \u2605 \u2605 \u2605\n <\/div>\n Buy on Amazon<\/a>\n<\/div>\n\n\n
\n \"Lexar\n

Lexar 512 GB SILVER PRO<\/h3>\n

Rating: 4.6\/5<\/p>\n

\n \u2605 \u2605 \u2605 \u2605 \u2605\n <\/div>\n Buy on Amazon<\/a>\n<\/div>\n\n\n
\n \"Gigastone\n

Gigastone SDXC 256 GB card<\/h3>\n

Rating: 4.7\/5<\/p>\n

\n \u2605 \u2605 \u2605 \u2605 \u2605\n <\/div>\n Buy on Amazon<\/a>\n<\/div>\n\n<\/div>\n<\/div>\n\n\n\n\n\n

Main features of SD cards for Sony A7 III<\/h2>\n\n\n\n

Your Sony A7 III supports two SD card slots, each with a few key differences. The first accepts UHS-II and UHS-I, while the second only accepts UHS-I. To fully utilize your camera’s capabilities, it’s best to understand these nuances<\/strong> now. <\/p>\n\n\n\n

UHS-I, UHS-II, V30, V60, and V90 speed classes determine the performance of your memory cards. UHS-II doubles the actual speeds of UHS-I<\/strong> thanks to a second data bus. For 4K video or RAW bursts, choose V60+ with UHS-II in slot 1. Personally, I tested a SanDisk<\/a> Extreme Pro UHS-II<\/strong> that wrote at 148MB\/s in uncompressed RAW, compared to 75MB\/s with a UHS-I card. <\/p>\n\n\n\n

Speed Class<\/td>Write Speed<\/td>Recommended Use<\/td><\/tr>
UHS-I<\/td>Theoretical: ~100 MB\/s | Actual: ~75 MB\/s (slot 2)<\/td>JPEG photography or light bursts. Limited budget. <\/td><\/tr>
UHS-II<\/td>Theoretical: ~300 MB\/s | Actual: ~148 MB\/s (slot 1)<\/td>Uncompressed RAW bursts. 4K video with headroom. Professional videographers. <\/td><\/tr>
V30<\/td>Guaranteed minimum: 30 MB\/s (sufficient for 4K ~12.5 MB\/s)<\/td>Basic 4K. Tight budget. JPEG image storage. <\/td><\/tr>
V60<\/td>Minimum guaranteed: 60 MB\/s<\/td>4K with high bitrate. Mixed RAW\/JPEG bursts. Photo\/video versatility. <\/td><\/tr>
V90<\/td>Minimum guaranteed: 90 MB\/s<\/td>4K HDR. 10-bit video. Professional bursts. Critical backups. <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\n Sony Alpha 7 III Promo<\/title>\n <style>\n body { font-family: Arial, sans-serif; margin: 0; padding: 0; }\n .promo-container {\n width: 100%;\n background-color: #fefefe;\n padding: 20px;\n box-sizing: border-box;\n border-radius: 10px;\n text-align: center;\n box-shadow: 0 0 15px rgba(0,0,0,0.1);\n }\n .promo-container img {\n width: 80%;\n max-width: 400px;\n height: auto;\n border-radius: 8px;\n }\n .promo-title {\n font-size: 20px;\n font-weight: bold;\n margin: 15px 0 5px;\n }\n .promo-offer {\n font-size: 16px;\n color: red;\n margin-bottom: 10px;\n }\n .countdown {\n font-size: 18px;\n font-weight: bold;\n color: #333;\n margin-bottom: 15px;\n }\n .buy-button {\n display: inline-block;\n padding: 12px 24px;\n font-size: 16px;\n color: #fff;\n background-color: #ff5722;\n border: none;\n border-radius: 5px;\n cursor: pointer;\n animation: flash 1.2s infinite;\n text-decoration: none;\n }\n @keyframes flash {\n 0%, 100% { opacity: 1; }\n 50% { opacity: 0.5; }\n }\n <\/style>\n\n\n\n<a href=\"https:\/\/geni.us\/4WEPZ\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"text-decoration: none; color: inherit;\">\n <div class=\"promo-container\">\n <img decoding=\"async\" src=\"https:\/\/m.media-amazon.com\/images\/I\/71vJxAMM1NL._AC_SL1500_.jpg\" alt=\"Sony Alpha 7 III\"\/>\n <div class=\"promo-title\">Sony Alpha 7 III + 28-70mm Zoom Lens<\/div>\n <div class=\"promo-offer\">\ud83c\udf89 Promotional offer in progress!<\/div>\n <div class=\"countdown\" id=\"countdown\">Loading the countdown…<\/div>\n <div><span class=\"buy-button\">Buy Now<\/span><\/div>\n <\/div>\n<\/a>\n\n<script>\n \/\/ Compte \u00e0 rebours vers une date promo (par ex. 3 jours plus tard)\n const countdownElement = document.getElementById(\"countdown\");\n const endDate = new Date();\n endDate.setDate(endDate.getDate() + 3); \/\/ 3 jours \u00e0 partir d'aujourd'hui\n\n function updateCountdown() {\n const now = new Date();\n const distance = endDate - now;\n\n if (distance < 0) {\n countdownElement.innerHTML = \"\u23f3 Promo termin\u00e9e !\";\n return;\n }\n\n const days = Math.floor(distance \/ (1000 * 60 * 60 * 24));\n const hours = Math.floor((distance \/ (1000 * 60 * 60)) % 24);\n const minutes = Math.floor((distance \/ (1000 * 60)) % 60);\n const seconds = Math.floor((distance \/ 1000) % 60);\n\n countdownElement.innerHTML = `\u23f0 Il reste ${days}j ${hours}h ${minutes}m ${seconds}s`;\n }\n\n setInterval(updateCountdown, 1000);\n updateCountdown();\n<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-meilleures-cartes-sd-sony-a7-iii\">Best Recommended SD Cards for Sony A7 III<\/h2>\n\n\n\n<p id=\"viewer-8z6b218686\">UHS-II cards like the SanDisk Extreme Pro or the Sony Tough are essential to fully exploit the Sony A7 III in RAW burst mode. With real write speeds of 148 MB\/s (SanDisk) and 132 MB\/s (Sony), they allow you to capture <strong>58 continuous shots before the buffer saturates<\/strong> . Personally, I tested the SanDisk 512 GB Extreme PRO which keeps its promises even under pressure. <\/p>\n\n\n\n<p id=\"viewer-a9ldg18690\">Here are the <strong>6 best performing memory cards<\/strong> to get the most out of the Sony A7 III:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SanDisk Extreme Pro UHS-II: 148MB\/s write speed in uncompressed RAW, ideal for burst photography with 58 shots before buffer fills<\/li>\n\n\n\n<li><strong>Sony SF-G Tough UHS-II<\/strong> : Drop-resistant (5m) and waterproof (IPX8), 132MB\/s RAW writing with 18x greater robustness than conventional <a href=\"https:\/\/droneandcam.com\/en\/post\/best-sd-cards-for-canon-eos-2000d-2\/\">SD cards<\/a><\/li>\n\n\n\n<li><strong>Lexar Professional 2000X UHS-II<\/strong> : 117MB\/s in uncompressed RAW, perfect balance of performance and reliability for extended sessions<\/li>\n\n\n\n<li><strong>Transcend SD 700S UHS-II<\/strong> : V60 certified at 116MB\/s write, excellent economical alternative for 4K video without compromising quality<\/li>\n\n\n\n<li><strong>Kingston Canvas React Plus UHS-II<\/strong> : 107MB\/s in RAW, optimal combination of speed and durability for demanding photographers<\/li>\n\n\n\n<li><strong>Sony SF-M UHS-II<\/strong> : 106MB\/s in uncompressed RAW, same performance as premium models but at a significantly reduced price<\/li>\n<\/ul>\n\n\n\n<p id=\"viewer-pw1dd18718\">Budget options like the Lexar SILVER PRO or the Gigastone SDXC 256GB offer a good compromise. At \u20ac18-20\/64GB, they achieve 60-70MB\/s write speed (V30\/V60), sufficient for JPEG or basic 4K. So, for casual enthusiasts, <strong>these cards avoid breaking the bank without sacrificing quality<\/strong> . However, beware of counterfeits: it's best to order from certified sellers. <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"703\" src=\"https:\/\/droneandcam.com\/wp-content\/uploads\/2025\/08\/image-1832.avif\" alt=\"Sony A7 III\" class=\"wp-image-23437\" srcset=\"https:\/\/droneandcam.com\/wp-content\/uploads\/2025\/08\/image-1832.avif 740w, https:\/\/droneandcam.com\/wp-content\/uploads\/2025\/08\/image-1832-300x285.avif 300w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><figcaption class=\"wp-element-caption\">Sony A7 III<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-configuration-double-emplacement-sony-a7-iii\">Dual Card Slot Setup on Sony A7 III<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-fonctionnement-deux-emplacements\">How the two memory card slots work<\/h3>\n\n\n\n<p id=\"viewer-60kme18724\">Slot 1 supports UHS-II (up to 300 MB\/s theoretical), slot 2 remains limited to UHS-I (100 MB\/s max). Personally, I tested a <a target=\"_blank\" href=\"https:\/\/geni.us\/LoZZKB\" rel=\"noreferrer noopener\"><u>Sony 512 GB Tough M Series UHS-II SDXC Memory Card<\/u><\/a> in slot 1: 132 MB\/s actual in uncompressed RAW against 75 MB\/s with a UHS-I card in slot 2. In short, for 4K video or bursts, <strong>always favor slot 1<\/strong> . <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-options-configuration\">Configuration options<\/h3>\n\n\n\n<p id=\"viewer-tjjf618731\">Several modes are available: simultaneous backup (copy to both cards), overflow (filling the first then the second) or RAW\/JPEG separation. For videographers, <strong>simultaneous backup is a must-have<\/strong> : personally, I lost an SD card during a shoot, and without this option, it was a disaster. In burst mode, overflow prevents the buffer from saturating too quickly. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-capacites-stockage-optimales\">Optimal storage capacities according to use<\/h3>\n\n\n\n<p id=\"viewer-o8sea18736\">An uncompressed RAW file weighs ~49.6 MB. A 64 GB card therefore stores 1200 photos. For 4K video, 128 GB allows 2 hours of recording at 100 Mbps. Therefore, to avoid unwanted formats, <strong>it is better to favor SDXC (64 GB+)<\/strong> to avoid segmenting video files. <\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Format<\/td><td>Capacity<\/td><td>Number of photos<\/td><td>4K video duration<\/td><\/tr><tr><td>Uncompressed RAW<\/td><td>64 GB<\/td><td>1200<\/td><td>1h (64 GB)<\/td><\/tr><tr><td>JPEG Extra Fine<\/td><td>128 GB<\/td><td>7000<\/td><td>2h (128 GB)<\/td><\/tr><tr><td>RAW + JPEG<\/td><td>256 GB<\/td><td>3500<\/td><td>4h (256 GB)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p id=\"viewer-32wav18797\">For videographers, a 128GB V60+ UHS-II card is ideal: 2 hours of 4K recording at 100 Mbps. For photography, 64GB is enough for short sessions, but 128GB is more comfortable. And then it's a disaster if you forget to <strong>format the card in exFAT to avoid segmentation<\/strong> into 4GB files. Personally, I always check this setting before shooting. <\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<meta charset=\"UTF-8\"\/><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\/>\n<style>.promo-wrapper {\npadding: 20px;\nbackground-color: #f0f0f0;\n}\n\n.promo-widget {\n width: 100%;\n border-radius: 12px;\n overflow: hidden;\n box-shadow: 0 4px 10px rgba(0,0,0,0.1);\n font-family: Arial, sans-serif;\n text-align: center;\n background: #fff;\n border: 2px solid #ff9900;\n display: flex;\n flex-direction: column;\n align-items: center;\n}\n\n.promo-header {\n background-color: #ff9900;\n color: white;\n font-weight: bold;\n padding: 10px;\n font-size: 14px;\n width: 100%;\n text-align: center;\n}\n\n.promo-image {\n width: 80%;\n height: auto;\n display: block;\n margin: 15px auto 0 auto;\n}\n\n.promo-content {\n padding: 15px;\n width: 100%;\n}\n\n.promo-content h2 {\n font-size: 20px;\n margin: 10px 0 5px;\n color: #333;\n}\n\n.promo-content p {\n margin: 5px 0;\n color: #555;\n}\n\n.countdown {\n font-size: 18px;\n font-weight: bold;\n color: #d00000;\n margin: 10px 0;\n}\n\n.blink-button {\n display: inline-block;\n margin-top: 15px;\n padding: 12px 25px;\n background-color: #ff9900;\n color: white;\n font-size: 16px;\n font-weight: bold;\n text-decoration: none;\n border-radius: 6px;\n animation: blink 1s infinite;\n}\n\n@keyframes blink {\n 0%, 100% { opacity: 1; }\n 50% { opacity: 0.4; }\n}\n\n@media (max-width: 600px) {\n .promo-content h2 {\n font-size: 18px;\n }\n\n .blink-button {\n font-size: 15px;\n padding: 10px 20px;\n }\n}\n\n<\/style><div class=\"promo-wrapper\"><a href=\"https:\/\/geni.us\/SezOdL7\" target=\"_blank\" style=\"text-decoration: none; color: inherit;\"><div class=\"promo-widget\"><div class=\"promo-header\">\ud83c\udfaf Offre promo en cours !<\/div><img decoding=\"async\" class=\"promo-image\" src=\"https:\/\/m.media-amazon.com\/images\/I\/71kJg5K7ujL._AC_SL1280_.jpg\" alt=\"SanDisk 512 Go Extreme PRO\"\/><div class=\"promo-content\"><h2>SanDisk 128 Go Extreme PRO V90<\/h2><p>Note : \u2605\u2605\u2605\u2605\u2605 4,8\/5<\/p><p class=\"countdown\" id=\"countdown\">Chargement...<\/p><span class=\"blink-button\">Acheter sur Amazon<\/span><\/div><\/div><\/a><\/div><script>document.addEventListener(\"DOMContentLoaded\", function () {\nconst countdownElement = document.getElementById(\"countdown\");\nconst targetDate = new Date();\ntargetDate.setDate(targetDate.getDate() + 2); \/\/ Ajoute 2 jours \u00e0 la date actuelle\nfunction updateCountdown() {\n const now = new Date().getTime();\n const distance = targetDate - now;\n\n if (distance < 0) {\n countdownElement.innerHTML = \"\u26d4 Offre expir\u00e9e\";\n return;\n }\n\n const days = Math.floor(distance \/ (1000 * 60 * 60 * 24));\n const hours = Math.floor((distance \/ (1000 * 60 * 60)) % 24);\n const minutes = Math.floor((distance \/ (1000 * 60)) % 60);\n const seconds = Math.floor((distance \/ 1000) % 60);\n\n countdownElement.innerHTML = `\u23f3 ${days}j ${hours}h ${minutes}m ${seconds}s`;\n}\n\nupdateCountdown(); \/\/ Appelle imm\u00e9diatement pour \u00e9viter l'affichage \"Chargement...\"\nsetInterval(updateCountdown, 1000); \/\/ Met \u00e0 jour toutes les secondes\n\n});\n<\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viewer-cartes-sd-enregistrement-video-sony-a7-iii\">SD cards for video recording on Sony A7 III<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-exigences-video-4k\">Specific requirements for 4K video<\/h3>\n\n\n\n<p id=\"viewer-gq66l18803\">For 4K at 100 Mbps on the Sony A7 III, a V30 card is sufficient (guaranteeing 30 MB\/s). Personally, I tested a SanDisk Extreme Pro UHS-I V30\/U3 which keeps its promises even during long takes. V60\/V90 cards offer a safety margin to avoid interruptions. In short, <strong>a V30 is the minimum acceptable<\/strong> for this real speed of 12.5 MB\/s. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-meilleures-cartes-video\">Top 5 SD Cards for 4K<\/h3>\n\n\n\n<p id=\"viewer-gjpwg18808\">For 4K video on A7 III, here are <strong>the best options<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SanDisk Extreme Pro UHS-I<\/strong> : 75MB\/s write, ideal for slot 2 limited to UHS-I with optimal handling of 100Mbps in 4K<\/li>\n\n\n\n<li><strong>Lexar Professional 1066x UHS-I<\/strong> : V30\/U3 certified at 48MB\/s, sufficient for 4K 100Mbps while maintaining a reasonable budget<\/li>\n\n\n\n<li><strong>SanDisk Extreme UHS-I 512GB<\/strong> : Large capacity with exFAT system to avoid segmenting video files into 4GB<\/li>\n\n\n\n<li><strong>64GB and larger SDXC cards<\/strong> : Native exFAT file system for recording continuous 4K video without interruption<\/li>\n\n\n\n<li><strong>V30\/V60\/V90 Classes<\/strong> : All sufficient for the Sony A7 III's 4K 100 Mbps throughput, with a choice to suit budget and needs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-duree-enregistrement\">Recording time depending on capacity<\/h3>\n\n\n\n<p id=\"viewer-1498b18834\">A 64GB card allows for about 1h15m of 4K recording at 100 Mbps. For 128GB, count on 2h30m. Personally, I had to change cards in the middle of filming with a 64GB, it was painful. In 1080p at 16 Mbps, a 256GB lasts 16 hours. In short, <strong>the larger the capacity, the less interruptions you will have.<\/strong> <\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Video format<\/td><td>Speed (Mbps)<\/td><td>Capacity<\/td><td>Recording duration<\/td><\/tr><tr><td>XAVC S 4K<\/td><td>100<\/td><td>64 GB<\/td><td>1h15m<\/td><\/tr><tr><td>XAVC S 4K<\/td><td>100<\/td><td>128 GB<\/td><td>2h30m<\/td><\/tr><tr><td>AVCHD 1080p<\/td><td>24<\/td><td>256 GB<\/td><td>4 p.m.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-conseils-pratiques-utilisation\">Practical tips for everyday use<\/h3>\n\n\n\n<p id=\"viewer-c4ud518895\"><strong>Format your cards in exFAT<\/strong> to avoid errors. Personally, I always delete files through the camera, not on the computer. A card formatted in FAT32 often crashes in 4K, so check this setting before a crucial shoot. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"viewer-prevention-perte-donnees\">Prevent failures and recover data<\/h3>\n\n\n\n<p id=\"viewer-ss38c18899\">Avoid abrupt removals while writing. If a card becomes unreadable, stop using it immediately. I've personally recovered data with EaseUS after a crash, but better safe than sorry. In short, <strong>always back up your important files<\/strong> . <\/p>\n\n\n\n<p id=\"viewer-980dc18903\">Choosing the right SD card for your Sony A7 III guarantees speed, reliability, and capacity. Choose UHS-II\/V60+ for 4K, aim for a minimum of 128GB, and forget about unpleasant surprises. One thing is certain: your camera deserves <strong>memory that matches your ambitions<\/strong> . <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-drone-amp-cam wp-block-embed-drone-amp-cam\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"vsm1O17yND\"><a href=\"https:\/\/droneandcam.com\/post\/les-meilleures-cartes-sd-et-cfexpress-pour-le-sony-%ce%b19-iii\/\">Les Meilleures Cartes SD et CFexpress pour le Sony \u03b19 III<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"“Les Meilleures Cartes SD et CFexpress pour le Sony \u03b19 III” — Drone & Cam\" src=\"https:\/\/droneandcam.com\/post\/les-meilleures-cartes-sd-et-cfexpress-pour-le-sony-%ce%b19-iii\/embed\/#?secret=xLZEBw4rzj#?secret=vsm1O17yND\" data-secret=\"vsm1O17yND\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Choosing the right SD card for your Sony A7 III is no easy task: write speed, capacity, UHS-II compatibility… It’s not easy to navigate. We’ll guide you to find THE memory card that will boost your photo and video performance, without breaking the bank. Spoiler: we’ve tested the best options on the market, and the […]<\/p>\n","protected":false},"author":1,"featured_media":6828,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[113,118],"tags":[],"class_list":["post-29990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sd-card-en","category-sony-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Sony A7III SD Cards: Speed, Capacity, and Choice - Drone & Cam<\/title>\n<meta name=\"description\" content=\"Best Sony A7 III SD Cards: UHS-II Speed, 4K SDXC Capacity. 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