Latest or all posts or last 15, 30, 90 or 180 days.
Welcome to
In-depth review coverage is by subscription.
Also by Lloyd: and
First-time visitor
SSD upgrade that takes full advantage of APFS

Is That Digital Camera Storage Card Reliable for Video or Still Use?

Especially for video where a bad spot on a card could interrupt a shoot, testing a Compact Flash or SDXC card for performance and reliability is a good idea (it also helps flush out counterfeit cards, an issue I ran into once).

Using diglloydTools DiskTester, the fill-volume command can test over the entire capacity, and it produces output suitable for graphing the performance by pasting it into the supplied excel spreadsheet graph (the read phase also verifies the data that was written).

Here we can see that there is some performance variance, but that the data rate remains high enough such that recording of 4K video should not be interrupted (data rate of about 10 MB/sec for 4K video). A more thorough test-reliability command is also available, should one suspect intermittent reliability glitches.

Performance across the 64GB capacity of SanDisk Extreme Pro 64GB SDXC card
MB/sec, higher is faster
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 179 min unless noted. Certain deals may last longer.

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.