Best Memory Card for Sony RX10 V

Who should buy what

• Keeping V90 capability available across demanding modes: Sony SF-G TOUGH 128GB UHS-II SDXC.
• More space while retaining a V90 video class: Kingston Canvas React Plus 256GB V90 SDXC.
• Comparing a second UHS-II V90 ecosystem: Lexar Professional 2000x 128GB V90 SDXC.

The RX10 V uses SD media and supports UHS-I and UHS-II. Still photography and video do not have identical requirements. For video, consult the selected file format, bitrate, S&Q and proxy settings together rather than using “4K” as the only criterion.

Sony’s mode table specifies V90 SDXC for XAVC S-I 4K and XAVC S-I HD, while its maximum-rate ordinary XAVC HS/S 4K entries call for V60 or higher. Demanding S&Q entries can require V90 as well. The recommendations here deliberately use V90 to cover that more demanding tier; lower-cost media can be appropriate when your exact mode allows it.

A microSD card requires an adapter, but full-size SD avoids that extra piece in this camera. Do not buy CFexpress Type A or Type B: a product being suitable for another Sony camera does not make it fit the RX10 V.

Start with a realistic card size

For many mixed shooting days, 256GB is a useful starting point: it leaves room for multiple takes while encouraging a regular offload routine. Move to 512GB when you expect longer sessions or fewer opportunities to copy files. Two smaller cards can make rotation easier, but they are not a backup of each other unless you actually duplicate the footage.

Estimate time from bitrate

For planning, decimal capacity in GB multiplied by 8000 and divided by bitrate in Mbps gives approximate recording seconds. A 256GB card at a constant 200Mbps would hold roughly 171 minutes before allowing for formatting, audio, metadata or other overhead. This is arithmetic, not a measured runtime. Variable bitrate and changes of recording mode alter the result, and battery or temperature limits can stop a take first.

Separate sustained writing from transfer speed

The largest MB/s number on a card listing is often a peak read figure. It does not describe the guaranteed sustained write class or the camera’s own transfer limit. A fast reader can shorten an offload when the card and computer support it, but it cannot make an unsuitable card meet a camera recording requirement.

Keep the purchase specific

Match the full family name, capacity and speed markings. Different generations and formats can share similar packaging. Buy from a seller with a clear return policy, check the received label and retain the packaging until you have tested the card. Avoid treating a very low price or a large printed capacity as proof of authenticity.

1. Copy any existing files before formatting.
2. Format the card in the camera using its normal procedure.
3. Record a representative clip in the most demanding mode you intend to use.
4. Play it back and verify a computer transfer before an important job.
5. Make two verified copies before erasing the original footage.

Do not remove the card or interrupt power while the camera is writing. Keep a spare tested card in a separate protective holder. If repeated recording warnings appear, investigate the exact card, selected mode, firmware and operating conditions rather than assuming another quick format repairs the problem. Retire questionable media from important work.