This way I don’t need a fast card in slot 2. It is still a good idea to buy a fast card for slot 2 if you are running a backup, but you probably won’t be taking that second card out of the camera often so you could just stick with a cheaper Sony G, or Delkin Power instead of running dual Tough cards.Īgain, If you’re just buying the camera for video then you don’t even need the fastest cards since the camera only outputs 100Mbps video which translates to 12.5MB/s and I would recommend something like Sony M cards.įor how I shoot with my Sony A7rIII, I don’t run a dual memory card backups, instead, I have the camera set up so all my photos go to Slot 1 for the fast UHS-II speeds, then I set all video to got slot 2. Before using backup would slow down your write speeds to UHS-I speeds. This means if you’re running a second card as a backup you will see UHS-II performance with both cards. The Sony A7rIV now uses dual UHS-II card slots. UHS-II cards are nice for this as they will transfer quicker than UHS-I cards.įor sitting in the living room vloggers, 64GB cards will be fine. Here is a handy chart you can use to find the record times you’ll get with different size memory cards with the different recording formats.įor video shooters or filmmakers, I recommend 128GB cards and I highly recommend you clear off your cards regularly for backup throughout the shoot. So even if you need 1080p, it’s better to record 4k then scale down, which if done correctly in a 16-bit sequence will results in a 4:2:2 data compression. If you only want 1080p 24fps or 1080p 30fps, you will only get half the bitrate of 50Mbps. To get the maximum quality or 100Mbps at 24fps or 30fps with the Sony A7rIV you will need to record in 4k unless you want 100fps or 120fps then you can record 1080p with 100Mbps. Take a look at the max bitrates.ġ080 24p / 25p / 30p / 50p / 60p Max Bitrate: 50Mbps The memory card size you’ll need for the A7rIV when recording video will depend on what format you are recording and how you plan on using the camera. I still recommend 64GB, but if you shoot uncompressed with that 61MP sensor you might want to move up to 128GB since the file sizes are massive.Īlso, the buffer will clear faster when using uncompressed files, but the files are larger so they take longer to copy. I put together a nice guide based on specs and my experience to help you decide which size memory card to buy. SDHC – With SDHC memory cards the camera will format them to 32-bit, this means video files will be broken up into 4GB chunks. SDXC – This allows the cards to be formatted with a 64-bit file system so that you can have large video clips. The other rating you need to look at is SDXC or SDHC. So any U3, v30, v60, v90 card will work great. You will gain nothing by buying the fastest SD memory cards if you’re just using the camera for video.Īll the modern U3 memory cards that I have been testing have been working great for 4k video so all you really need to look for is that rating or better. If video is your focus, stick with the slower UHS-II cards like the Sony M cards, Sony E cards or Prograde v60 cards. Because of this low bitrate, you don’t need fast cards for video. The Sony A7rIV still only outputs 100Mbps 4k video which translates to about 12.5MB/s. How Long To Clear Buffer? 14:08 – (Sony G Tough) How Many Shots To Fill Buffer? 31 Uncompressed – (Sony G Tough) How Many Memory Card Slots? Two, Both are UHS-II Memory CardĪ7rIV Spec And Buffer Questions Sensor: 61MP Full-Frame Exmor R BSI CMOS Sensor What’s interesting is the Sony A7r IV seems to now favor a certain type of flash configuration as only a handful of cards performed well. The data was calculated against the time it took to clear the buffer. Here is a chart showing how each card performed in the Sony A7rIV.įor these benchmarks, the camera was tested shooting continuous burst in RAW uncompressed. *There is also a new Sony M Tough card and a new Sony E UHS-II card.Īlso, check out the List of Essential Accessories Sony Ar7IV If you don’t need the fastest memory cards or you’re a video/photo hybrid shooter here are a few great budget-friendly cards that are fast enough for 4k 100Mbps video, but also fairly quick for shooters that don’t do a lot of burst photography. These are all great cards but the Sony Tough is totally worth it if you can justify the expense. It also looks like Sony has upgraded the UHS-II hardware as it’s now one of the fastest mirrorless UHS-II cameras. The biggest is the addition of a UHS-II memory card in Slot 2 for incredibly fast memory card speeds when shooting with a dual memory card setup. A couple of big things have changed with the Sony A7r IV compared to the previous model.
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