The Camranger is another solution that allows wi-fi tethering and can be used with iOS and android devices. If you set the camera to record both raw and JPEG, only the JPEG is uploaded to the device for preview. With Nikon, one can use JPEG fine, normal, or basic (1:4, 1:8, or 1:16 compression respectively) to decrease the upload time. The Camranger software is well done and offers focus peaking and other features.
Bill
I wasn't aware of HDMI input adapters, I've stopped keeping up with tablets. What software is required on the device to display the HDMI stream?
That is the problem with most of these solutions. Why does the entire file (even jpg) need to be transferred to the device for preview? I might shoot 60 frames for one look, I really don't want to wait for all those D800E files to make it over to review them with my team when my camera can already display them instantly and then delete the files. Totally wasteful when the camera has done all the hard work already.
With the Camranger, there are options to control what is uploaded to the iPad. With
Auto-View the images are automatically uploaded and displayed as they are taken. With
Auto-Save the images are automatically uploaded and saved to the iOS photo library, FTP server, or Dropbox. With
Auto-Thumbnails thumbnails of captured images are automatically displayed. All of these features can easily be turned on or off. These features should address your concerns should you use Camranger.
Bill