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.
SD cards are cheap. Don't forget you'll need at least one lens for the DSLR-if you can't afford a couple dedicated SD cards for your DSLR, maybe you should reconsider. I believe you'll need at least a class 10 card for recording video, but do check the specs of the camera you're purchasing.on't forget you'll need at least one lens for the DSLR-if you can't afford a couple dedicated SD cards for your DSLR, maybe you should reconsider. I believe you'll need at least a class 10 card for recording video, but do check the specs of the camera you're purchasing.