An SD card has two numbers that matter for photography and one that mostly matters for video. The bus (UHS-I or UHS-II) sets how fast data moves in either direction. The capacity sets how many frames fit. The V class is a guaranteed minimum for sustained writing: V30, V60 and V90 promise 30, 60 or 90 MB/s. It exists for video, where the camera writes a fixed stream and cannot pause. A stills camera writes in bursts and the buffer absorbs the difference, so for photography the write speed and the bus matter more than the class, and every camera in the table below clears its buffer onto a V30 card.
That is where most of the money gets wasted. A V90 card costs more than four times what a V30 card costs at the same capacity, and most of the people buying one never record a mode that needs it. The cards below are matched to the work. V30 covers stills and 4K30. V60 is for deep RAW bursts and 4K60 10-bit. V90 is only for the cases where a menu demands it. Buy every card from Amazon.com itself or the maker’s own storefront; that is the counterfeit filter.
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TLDR
The SanDisk Extreme 128GB UHS-I V30 ($44.99) is the card for most photographers: 230 MB/s read, 120 MB/s write. The SanDisk Extreme PRO 256GB UHS-I V30 is the value buy at 256GB. It is $92.99, down from $129.99, and it writes at 170 MB/s. Long RAW bursts and 4K60 10-bit move you to UHS-II. The card there is the Lexar Silver Pro 128GB UHS-II V60 ($89.99). For a hybrid kit, get the 256GB Silver Pro ($149.99). The ProGrade Digital Gold 128GB V60 ($129.99) is the same class with a card maker’s support desk behind it. The V90 pick is the Lexar Professional 2000x 128GB UHS-II V90. It is $193.88 against a $269.99 list. It is for 8K and 600 Mb/s ALL-I work only, and most photographers never need it.
The picks
Best for most photographers: SanDisk Extreme 128GB UHS-I V30
120 MB/s write on a UHS-I bus is the spec that decides this one. The card’s job in a stills camera is to drain the buffer before the next burst. A 120 MB/s write does that on every body in the table below, in RAW, at the frame rates those cameras shoot through an SD slot. The SanDisk Extreme 128GB is the 2026 version of the card, 230 MB/s read, V30 and U3 rated, at $44.99. 128GB is the right size for a 24 to 33 megapixel body that gets offloaded after each shoot.
The cost is the offload. UHS-I tops out at 104 MB/s and a reader gets roughly 90 of it, so a full 128GB card takes around 24 minutes to copy in any reader; the UHS-II cards below do it in about eight. The SanDisk Extreme PRO 128GB UHS-I costs $7 more, at $51.99. It raises the read to 250 MB/s and leaves the write at 120, which buys a photographer nothing. There is no cheaper pick; the cheaper cards on Amazon are the ones the counterfeit paragraph is about.
Best value per GB: SanDisk Extreme PRO 256GB UHS-I V30
At 256GB the PRO premium disappears. The SanDisk Extreme PRO 256GB UHS-I is $92.99 against a $129.99 list. That is 36 cents a gigabyte, a cent more than the 128GB Extreme. It also has the 250 MB/s read and the PRO write speed, 170 MB/s against 120. Double the frames per card and a buffer that clears about 40 percent faster, within a cent of the budget card’s price per gigabyte.
What it gives up is the same UHS-I offload ceiling with twice as much to copy, about 47 minutes for a full card. On a single-slot body two Extreme 128GB cards at $44.99 cost about the same and split the risk of a card failure.
Best for burst RAW and 4K60: Lexar Silver Pro 128GB UHS-II V60
UHS-II is the spec here, and V60 is the class. The second row of pins lifts the bus ceiling from 104 MB/s to 312 MB/s, which keeps the buffer from filling on a long RAW burst and gets a 128GB card off the reader in about eight minutes. The Lexar Silver Pro 128GB is $89.99 and reads at up to 280 MB/s. It carries the V60 guarantee, a minimum sustained write of 60 MB/s. That covers every long-GOP 4K60 10-bit mode on the cameras below. That is $45 over the V30 pick for the UHS-II bus and the V60 floor.
UHS-II only pays off in a UHS-II slot and a UHS-II reader; in a UHS-I slot or a $10 reader the card drops to one row of pins and runs like the $44.99 card. Every body in the table below has a UHS-II slot, and the UGREEN SD 4.0 UHS-II reader is $19.99. The SanDisk Extreme PRO 128GB UHS-II is the other V60 card, at $189.99. It has a 300 MB/s read and a 210 MB/s write. The name reads like a V90 card, but the model (SDSDXEM) is V60. So it is $100 more for the same guarantee and a faster write-back. Cheaper is the SanDisk Extreme 128GB if the bursts are short.
Hybrid shooters: Lexar Silver Pro 256GB UHS-II V60
Capacity decides this one. The V60 bitrates in the table below are 340 and 360 Mb/s. At those rates a 128GB card holds about 47 to 50 minutes of footage. An event day that mixes stills and video runs out of card first. The Lexar Silver Pro 256GB is the same UHS-II V60 card with twice the room, 280 MB/s read, $149.99. On a dual-slot body, one of these as the video card and a V30 as the stills backup is a cheaper kit than two of them.
The price per gigabyte is 59 cents against 36 for the UHS-I 256GB, and on a stills-only day that buys a faster offload and nothing else. The other 256GB UHS-II card is the SanDisk Extreme PRO 256GB UHS-II. It is also a V60 card, with a 300 MB/s read and a 250 MB/s write. At $299.99 it costs double the Lexar for the same class. The cheaper option is the 128GB Silver Pro at $89.99 and a card swap at lunch.
The pro-support brand: ProGrade Digital Gold 128GB UHS-II V60
Same V60 floor on the same UHS-II bus; what changes is who answers the phone. ProGrade Digital sells memory cards and readers to working photographers and stands behind them with its own support. The ProGrade Digital Gold 128GB reads at up to 250 MB/s and writes at up to 100 MB/s. It is $129.99 through ProGrade’s own Amazon storefront.
On the numbers it is the slowest UHS-II card here, $40 over the Lexar Silver Pro 128GB. For a photographer who shoots paid jobs on this card the support desk is worth it; for everyone else the Lexar is the cheaper option in the same class.
Best V90 (8K and high-bitrate hybrid work): Lexar Professional 2000x 128GB UHS-II V90
V90 guarantees 90 MB/s sustained, or 720 Mb/s. Only two kinds of SD recording need it. One is the 600 Mb/s ALL-I modes, such as the Sony a7 IV’s XAVC S-I 4K60 in the table below. The other is 8K on the few bodies that write it to SD. No camera below needs V90 for stills. For the work that does, the Lexar Professional 2000x 128GB is the V90 card. It has a 300 MB/s read and the V90 label, at $193.88 against a $269.99 list. Lexar’s listing gives only the read figure, so the class is the number to buy on.
That is $104 over the Silver Pro for a guarantee only a hybrid shooter uses. The seller on this listing changes, so buy it only when the “Sold by” line reads Amazon.com. The cheaper V90 is the ProGrade Digital Iridium 128GB, at $179.99 through ProGrade’s own Amazon storefront. It has a stated 200 MB/s write and the same 90 MB/s floor. Stills shooters stay with the Lexar Silver Pro at $89.99.
Which class your camera needs
Every body here has at least one UHS-II SD slot; a UHS-I card works in every slot at UHS-I speed. The video column is the heaviest mode the SD slot records. The classes come from the bitrate bands in CFexpress vs SD cards and readers. Long-GOP modes to 200 Mb/s are V30, modes from 230 to 480 Mb/s are V60, and 600 Mb/s ALL-I is V90.
| Camera | SD slots | Stills | Video through the SD slot |
|---|---|---|---|
| Sony a7 IV | Slot 1 CFexpress Type A or UHS-II SD, slot 2 UHS-II SD | V30 | V60; V90 only for XAVC S-I 4K60 (600 Mb/s) |
| Sony a7C II | One UHS-II SD | V30 | V60; V90 only for XAVC S-I 4K60 |
| Canon EOS R6 Mark II | Dual UHS-II SD | V30 | V60 covers every mode (4K60 is 340 Mb/s) |
| Canon EOS R8 | One UHS-II SD | V30 | V60 for 4K60 10-bit |
| Fujifilm X-T5 | Dual UHS-II SD | V30 | V60 (6.2K30 is 360 Mb/s) |
| Nikon Z6 III | CFexpress Type B plus UHS-II SD | V30 | V60; N-RAW goes to the CFexpress slot |
| Nikon Z5 II | Dual UHS-II SD | V30 | V60 for the 10-bit 4K modes |
| Panasonic S5 II | Dual UHS-II SD | V30 | V60 (internal recording is capped at 200 Mb/s; the menu asks for V60) |
The class is a floor the card guarantees when freshly formatted, so format in camera before a job. And some menus refuse a recording mode unless the printed rating matches; when the manual names a class, buy the class.
How the picks compare
| Card | Price | Bus | Class | Read / write | Best for |
|---|---|---|---|---|---|
| SanDisk Extreme 128GB | $44.99 | UHS-I | V30 | 230 / 120 MB/s | Most photographers |
| SanDisk Extreme PRO 256GB UHS-I | $92.99 | UHS-I | V30 | 250 / 170 MB/s | Value at 256GB |
| Lexar Silver Pro 128GB | $89.99 | UHS-II | V60 | 280 MB/s read | Burst RAW, 4K60 10-bit |
| Lexar Silver Pro 256GB | $149.99 | UHS-II | V60 | 280 MB/s read | Hybrid shooters |
| ProGrade Digital Gold 128GB | $129.99 | UHS-II | V60 | 250 / 100 MB/s | Pro support |
| Lexar Professional 2000x 128GB | $193.88 | UHS-II | V90 | 300 MB/s read | 8K, 600 Mb/s ALL-I |
| ProGrade Digital Iridium 128GB | $179.99 | UHS-II | V90 | 300 / 200 MB/s | Cheaper V90 |
| SanDisk Extreme PRO 128GB UHS-I | $51.99 | UHS-I | V30 | 250 / 120 MB/s | The $7 read bump; skip it |
| SanDisk Extreme PRO 256GB UHS-II | $299.99 | UHS-II | V60 | 300 / 250 MB/s | Fastest write-back; double the Lexar |
Read and write figures are the maker’s printed maximums; the class is the guaranteed minimum.
What matters
UHS-II is the one upgrade that changes the day. It triples the bus at both ends: a buffer that drains while you are still shooting, and a 128GB card off the reader in about eight minutes instead of 24. It needs a UHS-II slot (every camera above has one) and a UHS-II reader. The UGREEN SD 4.0 at $19.99 does it for one card. The OWC Atlas Dual SD does two at once for a dual-slot body. Sony shooters with a CFexpress Type A card in slot 1 want the ProGrade PG09, which reads Type A and UHS-II SD side by side. Most laptop and dock SD slots are UHS-I; the reader guide covers the rest.
Check the seller line. Counterfeit SD cards are a long-running marketplace problem; a fake carries the right logo, a smaller real capacity than printed, and no guarantee of any kind. Two filters: SD-3C, the body that licenses the SD logo, says to buy from licensed makers and their authorized channels, and Lexar prints a code on its cards that can be checked on its verifi page. On Amazon that means the “Sold by” line reads Amazon.com or the maker’s own storefront; a card at half the price from a seller with a made-up name is the fake. SanDisk publishes no verification page, so for SanDisk the seller line is the only check.
128GB or 256GB. 128GB holds a full day of 24 to 33 megapixel RAW for most shoots. 256GB is for 45 and 61 megapixel bodies, hybrid days, and anyone who offloads weekly.
FAQ
Is a V90 card worth it for photography?
No. V90 is a video guarantee, and no camera in the table above needs it for stills. The buffer clears a little faster than on a V60, at more than four times the price of the V30 card. Buy the Lexar 2000x when a menu names V90 for a video mode you shoot, and check that the seller line still reads Amazon.com.
Can a UHS-I card go in a UHS-II slot?
Yes, and the other way around; the slot uses the first row of pins and the card runs at UHS-I speed. The SanDisk Extreme 128GB works in every camera in the table, minus the faster buffer clearing and offload. A UHS-II card in a UHS-I reader drops the same way, which is why the reader has to match the card.
Does a faster card change image quality?
No. The file is identical on every card that keeps up. A slow card changes how many frames fit in a burst before the camera pauses and how long the offload takes; it never changes the pixels. Video is the exception: a card below the required class drops frames or stops the recording.
Match the class to the camera, then buy the real card
V30 on UHS-I covers stills and 4K30. V60 on UHS-II is for deep bursts and 4K60 10-bit. V90 is only for when a menu demands it. Buy every card from Amazon.com itself or the maker’s storefront. For the video side, read CFexpress vs SD cards and readers. For the other half of the offload, there is the best SD card reader. Samsung T7 vs T7 Shield vs T9 covers the drive the cards copy to. For the verified copy on the road, read the travel offload and backup workflow. And the best camera for YouTube covers the hybrid bodies that push a card to V60.
