Best Memory Cards For Sony A6700 – 35 Cards Tested

The Sony A6700 uses a single UHS-II memory card slot that can use up to UHS-II v90 SD cards.

I’ve tested 35 cards in the Sony A6700 to see which brands perform best, but I also list a few cards I recommend based on in-camera performance and different shooting styles.

Sony A6700 – Amazon / B&H

Camera Features That Are Impacted By Memory Cards

Memory Card Compatibility: Single Slot UHS-II SD Cards up to V90.

Maximum Video Bitrate: 600Mbps, which is 75MB/s – this will require V90 memory cards.

Sony A6700 Capacity: Sony does not specify a capacity limit for this card, meaning it should be able to use the highest capacity cards on the market.

For Videographers: You need V90 cards at minimum for H.264 at 600Mbps (XAVC S-I) recording, or you can use V60 cards for H.265 at 280Mbps (XAVC HS). Many videographers these days record in H.265 instead of H.264, but remember that you will still need V90 for some of the S&Q slow-motion recording modes.

Also, if you’re a serious videographer, you might want to use the 600Mbps H.264 codec from time to time. This codec uses an All-I compression and should give similar results to Prores 422, which runs at a similar data rate. In some situations, these All-I codecs have slightly better details than the XAVC HS modes.

For Photographers: Consider the different speed classes of the cards based on how often you burst while shooting. If you’re bursting a lot at very high framerates, you may want to use the fastest v90 memory cards, but otherwise, the v60 cards will likely be the best option for casual photographers.

Sony A6700 Memory Card Recommendations

This recommendation list features all the best memory cards for the Sony A6700 in the various speed classes and their in-camera performance. All 35 memory card benchmarks are posted further below.

Camera Specs

Sony A6700 Memory Card Benchmarks

Each card was tested in the Sony A6700.

I only had one issue: the Sandisk Extreme Pro V90 card didn’t work correctly. This card should be fine; I think there was an issue with one of the pins not connecting correctly. I cleaned the card shortly after, and there was a small piece of lint stuck to one of the pins, so that might be why this card has been behaving strangely. Sandisk cards are usually top performers in Sony cameras, so if you like Sandisk as a brand, don’t let this score sway your purchase decision. And make sure to keep your cards clean.

Memory Card Benchmarks in table form. You can click the little arrows at the top next to the A6700 speeds to sort the table.

Sony a6700 SD card compatibility

The Sony A6700 will reject memory cards that don’t match the specs of the video mode you’re trying to record in. It will also reject that old Sony M card they recalled years ago.

These charts will show which memory cards are supported in the different recording modes.

For movie recording (When [ Proxy Recording] is set to [Off])

S&Q Memory Card Shooting

When you set the S&Q Record Frame Rate to 30p, 25p, or 24p and pair it with a Frame Rate of  120fps, 60fps, or 50fps for slow-motion recording, you’ll need a UHS-II V90 card. While the playback seems to be at 30/25/24 fps with a bitrate of 600Mbps, the camera is recording at double the frame rate, resulting in technically theoretically higher bitrate. However, during playback, it reduces the speed to match the Record Frame Rate, cutting the bitrate in half as it stretches 60 frames shot into 30fps when played back, giving you a 500 or 600Mbps final file.

This is why S&Q record modes are crucial, as they provide better quality than standard slow-motion recording modes. If you require S&Q recording, a UHS-II V90 is necessary for the Sony A6700. Other features of the camera don’t demand such fast bitrates.

You can find these charts in the Sony A6700 User Manual.

Also, check out the lens list for the Sony APS-C E Mount.