As soon as I get my hands on the a7R V, this article will be updated with genuine in-camera speed and buffer tests to reflect its capabilities.
This guide is based on the findings from my Sony A1 Memory Card Guide, in which I tested all 5 CFexpress Type-A cards now available as well as 10 UHS-II SD cards in-camera. Until then, these findings will serve as the basis for this guide.
A Brief Analysis of the Writing Speed in-Camera Comparison
Here is a short comparison of the write speeds achieved by the Sony a1 with each of the CFexpress Type-A and UHS-II SD cards that I’ve tested in the camera.
This tutorial will be updated with actual in-camera test results from the a7R V as soon as it is in my possession and I will do it as soon as possible after that.
1. Lexar Professional CFexpress Type-A Gold
The 80GB Professional CFexpress Type A Card GOLD Series from Lexar is made for professional creators who want to record high-resolution photos and cinematic 8K film. It offers read and write rates of up to 900 MB/s and minimum sustained write speeds that won’t go below 700 MB/s.
With all of this, you can take raw pictures and image bursts in addition to 8K, 4K, and HFR video at up to 120 frames per second. It also complies with the VGP-400 video class standard, which ensures a minimum of 400 MB/s write rate. This card was made by Lexar to withstand shock, vibration, and temperatures between 14 and 158 degrees in order to help protect your data.
2. Delkin devises POWER CFexpress Type-A
Professional photographers and videographers can use the 80GB POWER CFexpress Type A Memory Card from Delkin Devices, which combines industrial robustness and dependability with quick performance.
It is suitable for high bitrate and frame rate 8K, 6K, and 4K video as well as continuous-burst and raw photography. You can reach maximum write speeds of 730 MB/s, maximum read speeds of 880 MB/s, and minimum write speeds of 400 MB/s using a PCIe 3.0 interface.
Delkin’s POWER Series is created with a design that is waterproof, shockproof, and X-ray proof in order to aid enable card usage in virtually any environment and to keep your material safe.
3. Sony CEA-G CFexpress Type-A 600 MB/s
The Sony 160GB CFexpress Type A TOUGH Memory Card is strong and quick, with read and write rates of up to 800 MB/s and 700 MB/s, respectively. This rapid speed helps with high-resolution continuous raw photo shooting as well as the recording of various video resolutions, bit rates, and compressions.
Beyond its speed, this TOUGH memory card has been rigidity tested to 70 N of force and has a strengthened physical construction to withstand falls from up to 15′. Additionally, it is resistant to high temperatures, X-rays, electrostatic discharge, and UV light.
Additional security features include the ability to restore deleted or lost files using File Rescue recovery software and the usage of Media Scan Utility to automatically scan CFexpress cards and alert you to the health of your flash memory.
4. ProGrade Digital CFexpress Type-A Cobalt
The 160GB CFexpress Type A Cobalt Memory Card (2-Pack) from ProGrade Digital is made for growing mainstream imaging applications and offers read speeds of up to 800 MB/s and write speeds of up to 700 MB/s, which enable you swiftly transfer content to your computer.
Furthermore, the minimum writes speed of the Cobalt is guaranteed to never go below 400 MB/s, enabling the uninterrupted recording of a number of codecs, including raw 4K videos, 4K and 6K ProRes 4444, 4K, 6K, and 8K ProRes 422 HQ, and more.
This card is resistant to X-rays, shock, vibration, and severe temperatures. Additionally, this card utilizes the NVMe PCIe 3.0 host controller interface.
Best UHS-II SD Memory Cards for Sony A7R V
These tests were done using the Sony a1 and 64GB cards.
5. Kingston Canvas React Plus 260 MB/s
The 256GB Canvas React Plus UHS-II SDXC Memory Card from Kingston has a storage capacity of 256GB and takes advantage of the UHS-II bus to support maximum read speeds of 300 MB/s and maximum write speeds of 260 MB/s. It is designed to deliver high-performance speeds that are required for industry-standard professional cameras that shoot 8K, 4K, and Full HD video as well as high-resolution photos.
Additionally, the V90 Video Speed Class designation for this card ensures minimum write speeds of at least 90 MB/s. These speeds enable it to support captures of cinematic quality while also reducing dropped frames.
While this card has been intended for cameras that are UHS-II / V90 compliant, it may be used in devices that do not support UHS-II / V90. UHS-II media achieves its speed through an extra row of pins.
Keep in mind, however, that this card will then automatically select the speed class and bus rating that is compatible with your device, such as UHS-II and V60, which supports minimum write speeds of 60 MB/s, UHS-II and V30, which support minimum write speeds of 30 MB/s, or UHS-I and U3, which also supports minimum write speeds of 30 MB/s.
This card is compatible with the U1 and Class 10 standards, each of which ensures a minimum write speed of 10 MB/s, in the event that your device does not support U3.
6. Sony SF-G Tough 260 MB/s
With a 128GB storage capacity, the Sony 128GB SF-G Tough Series UHS-II SDXC Memory Card makes use of the UHS-II bus to handle advanced DSLR features including continuous shutter bursts, quick shooting, and RAW and JPEG capture.
This card can capture video in 8K, 4K XAVC S, 60p AVCHD, 3D, HFR, and Full HD, and it can do it at maximum read and write speeds of up to 300 MB/s and 299 MB/s, respectively. Its V90 speed class designation ensures that minimum write speeds won’t go below 90 MB/s.
7. ProGrade V90 257 MB/s
ProGrade Digital’s 256GB UHS-II SDXC Memory Card (2-Pack) has a storage capacity of 256GB per card and uses the UHS-II bus to offer maximum read and write speeds of 300 MB/s and 250 MB/s, respectively.
This card’s V90 Video Speed Class rating, which ensures minimum write rates of at least 90 MB/s, also enables use in DSLRs, mirrorless cameras, camcorders, and digital cinema cameras that generate rich data streams, such as 6K, 5K, 4K, UHD 4K, and high bit rate MPEG-4 video. Additionally, it works well for bursts of fast shooting and raw images.
8. SanDisk Extreme Pro 247 MB/s
The 128GB Extreme PRO UHS-I SDXC Memory Card from SanDisk has a capacity of 128GB, is compatible with the UHS-I bus and has a speed class rating of V30, which ensures minimum write speeds of 30 MB/s. It is intended for SD devices that can record Full HD, 3D, and 4K video as well as raw and burst photography.
This card also supports the U3 standard, which also ensures a minimum write speed of 30 MB/s in the event that your device does not support the V30 standard. Up to 200 MB/s of reading and 90 MB/s of write speed are supported. An integrated write-protect switch serves to prevent the unintentional deletion of card data.
9. Delkin Devices POWER 246 MB/s
The 64GB POWER UHS-II microSDXC Memory Card from Delkin Devices is intended for professional photographers and videographers. It has a storage capacity of 64GB and uses the UHS-II standard to allow maximum read and write speeds of 300 MB/s and 250 MB/s, respectively.
Additionally, the V90 Video Speed Class designation for this card ensures minimum write speeds of at least 90 MB/s. Users are able to record in 8K, 4K, 3D, HDR, high speed, and high frame rate, as well as numerous video streams produced by 360° cameras, thanks to all of this. Additionally, it offers simultaneous data-intensive recordings of video, still images, GPS data, time-lapse, and raw and JPEG formats.
10. Angelbird AV Pro Mk 2 V90 246 MB/s
The 256GB AV Pro Mk 2 UHS-II SDXC Memory Card from Angelbird features a storage capacity of 256GB and takes advantage of the UHS-II bus to support sustained read speeds of 280 MB/s and sustained write speeds of 260 MB/s, in addition to sequential read speeds of 300 MB/s and sequential write speeds of 280 MB/s. This memory card was designed for high bit depths, frame rates, and resolutions, including Full HD, This particular card has also been developed with the V90 Video Speed Class rating, which ensures a minimum of 90 MB/s in terms of its write speeds.
11. Sony SF-M Tough 150 MB/s
The 128GB SF-M Tough Series UHS-II SDXC Memory Card from Sony has a storage capacity of 128GB and takes advantage of the UHS-II bus to support advanced DSLR functions such as continuous shutter bursts and rapid shooting, in addition to RAW and JPEG captures. Other features of the card include its durability and its resistance to extreme temperatures. This card performs exceptionally well while capturing video in a variety of resolutions and formats, including 4K, Full HD, and 3D video. It is capable of reaching read rates of up to 277 MB/s and write speeds of up to 150 MB/s at its highest potential. Because it has a speed class rating of V60, the minimum write speeds are assured to remain at or above 60 MB/s at all times.
12. Sony SF-M 150 MB/s
The 128GB SF-M Tough Series UHS-II SDXC Memory Card from Sony has a storage capacity of 128GB and takes advantage of the UHS-II bus to support advanced DSLR functions such as continuous shutter bursts and rapid shooting, in addition to RAW and JPEG captures. Other features of the card include its durability and its resistance to extreme temperatures.
This card performs exceptionally well while capturing video in a variety of resolutions and formats, including 4K, Full HD, and 3D video. It is capable of reaching read rates of up to 277 MB/s and write speeds of up to 150 MB/s at its highest potential. Because it has a speed class rating of V60, the minimum write speeds are assured to remain at or above 60 MB/s at all times.
13. Lexar Professional 2000X 141 MB/s
The 128GB Professional 2000x UHS-II SDXC Memory Card from Lexar has a storage capacity of 128GB and takes advantage of the UHS-II bus to support advanced DSLR functions such as continuous shutter bursts and rapid shooting, as well as raw and JPEG captures. The memory card also has a high transfer speed of 2000x.
This memory card can attain maximum read speeds of up to 300 MB/s and maximum write speeds of up to 260 MB/s, making it an excellent choice for capturing video in various resolutions and formats, including 4K, 3D, and Full HD video. Because it has a speed class rating of V90, the minimum write speeds are assured to remain at or above 90 MB/s at all times.
14. Transcend SD 700S
The 64GB 700S UHS-II SDXC Memory Card from Transcend can record 4K, 3D, and Full HD video, as well as raw and JPEG still photographs and photo bursts. It is designed for use with devices that support the UHS-II bus, such as advanced camcorders, DSLR cameras, and more.
It has a storage capacity of 64 gigabytes and a speed class rating of V90, which ensures that the minimum write rates will be at least 90 megabytes per second. The maximum supported write speed is 180 MB/s, whereas the maximum supported read speed is 285 MB/s. The inadvertent deletion of card data can be prevented to some extent by a write-protect switch that is integral to the card.
Which Memory Cards are Compatible with the Device?
Both of the Sony a7R V’s memory card slots are able to accommodate CFexpress Type-A cards, along with UHS-I and UHS-II SD cards. Additionally, the Sony a7R V has two memory card slots.
However, you can’t use a CFexpress Type-A card or an SD card in the same slot at the same time; you have to choose one or the other. You can’t use both at the same time.
A quick comparison of the speeds offered by CFexpress Type-A, UHS-I, and UHS-II cards is provided below.
- UHS-I is characterized by theoretically maximum transfer speeds of up to 104 megabytes per second.
- Theoretical maximum transfer speeds of up to 312 megabytes per second are possible with UHS-II.
- Theoretical maximum transfer speeds of up to one gigabyte per second can be achieved using CFexpress Type-A.