which card (write speed) do I need for recording 4K 60p?

Fotoni said:

When Blackmagic introduced their Pocket Cinema camera (around 2014 or so?), they said that Sandisk Extreme Pro 95MB/s is enough to record RAW video because it can do continuous writing (important) which means about at least 75MB/s or so. This means that it is at least V75 card. No one heard about these V speed standards at that time. Now there is overpriced V90 cards which claim to do something similar than what a lot cheaper cards did years ago. Sandisk probably slowed down their next Extreme Pro series to rip-off customers with their "new" V90 cards? 400 Mbit/s is 50MB/s anyway so V60 is max you need.

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P10004K said:

The Transcend V90 cards are not that expensive.

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hindesite said:

Or could, you know, learn about proxies.

Not a biggie. Don't scare people.

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Fotocrack said:

Hi,

I don't think you need that much speed. The 95 mb/s should be fine. If you need some peace of mind at a lower cost you can try one of the new Sandisk cards. They write at 170mb/s. They cost less than $50.00 for a 128GB card. B&H LINK HERE

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• 128GB Storage Capacity
• UHS-I / V30 / U3 / Class 10
• Max Read Speed: 170 MB/s
• Max Write Speed: 90 MB/s