Canon đã có card wifi là Canon's W-E1, dành cho 7D2.. card này ngoài chức năng chuyển hình ảnh và video qua android và iOS còn có chức năng remote camera, giá tại B&H chỉ có 39 USD.
Nguyên văn nè các bác :
Canon's first in-house Wi-Fi equipped SD card. Interestingly, unlike competing cards from Eye-Fi, Trek2000 (FluCard) and Toshiba (FlashAir), Canon's W-E1 Wi-Fi Adapter card doesn't feature any built-in memory. Instead, the cameras' CompactFlash card slot is used for storage, and the SD card slot is exclusively used to transfer data via Wi-Fi. As well as the 7D II, the new card is also compatible with both the Canon 5DS and 5DSR camera bodies. All three cameras will need a firmware update to enable use of the card, unless you're purchasing a 7D II with the card already included in the bundle. Once you've installed the card, you'll be able to use it to transfer both still images and MP4 movies, and to control the camera remotely from an Android or iOS phone or tablet using Canon's Camera Connect App. The card supports 802.11 b, g or n networks, but only on the 2.4GHz band.
Link B&H :
https://www.bhphotovideo.com/c/produ...i_adapter.html
PRODUCT HIGHLIGHTS
For 7D Mark II, 5DS, and 5DS R DSLRs
SD-Card Shaped Wi-Fi Accessory
802.11b/g/n Wi-Fi on 2.4 GHz Band
Range: 32.8'