WattUp combats this problem with a type of beam-forming technology. That Bluetooth connection is used to focus a tight cone of electromagnetic waves on the target, and it can even track the device and recalibrate as needed. A standard Qi wireless charger is about 90% efficient, but Energous claims it can hit 70% at much greater distances.
Flash memory cards for digital cameras are now absurdly cheap. A 64GB SD card can be bought online for around Â£30. Thatâs enough space to store 5,000 raw files produced by a typical DSLR â or upwards of 30,000 JPEGs. These cut-price cards come with a caveat, though.lash memory cards for digital cameras are now absurdly cheap. A 64GB SD card can be bought online for around Â£30. Thatâs enough space to store 5,000 raw files produced by a typical DSLR â or upwards of 30,000 JPEGs. These cut-price cards come with a caveat, though.
Recommended SD Cards for the Nikon D750. If you want the best performance, the SanDisk Extreme Pro 95MB/s UHS-I is the fastest SD card we tested in the D750. The runner up was the Kingston UHS-I U3 card labeled 90MB/s read and 80MB/s write.ts burst shooting performance is limited by a fairly shallow buffer but it supports UHS-I SDR104 to enable fast writing to SD cards to clear the buffer quickly. The SD card you choose can greatly affect shooting performance. We compare 21 different cards by measuring write speed in the D750 to find the fastest card.