You can do that today. In fact you don't even need the airport express since you can generate a wifi network from the laptop itself. For best results turn down your screen res (or use a smaller laptop - same result), and use Apple-T and Apple-B to hide the browser and tools, and if desired even the pill-box in the upper right corner to hide the tools. The image will now be almost entirely full screen on both devices.
Article on VNC.
My point is at this stage it is still crazy that to get a decent preview it takes a computer. I know, everyone in estonia loves to tether, but I can think of 10,000 times that you've got to pull the cord for all sorts of reasons and just shoot. If your not changing the lighting, the lcd is fine, but I can look at my work and tell if I was tethered or not, just because when tethering the shot usually looks more staged.
Someday I assume somebody from medium format land is going to actually shoot a dslr side by side one of their cameras and realize how difficult they've made the process, simply because the lcd preview is so rough.
I've done it and a client will look at a Nikon D3 lcd vs. a Phase, point at the NIkon and say "use the big camera".
I've heard that half a dozen times.
Maybe you do know what we're up against now in the world of commerce, but three day shoots are now one 18 our day and even those prices have been pulled down. Flexibility is much more important than micro detail, at least in my world today.
We've been asking for better previews for 7 years and for 7 years we just get bigger files.
I like medium format files, for vertical I love the format vs. the 35mm squeeze, but I just loathe bringing that slow running camera, back and computer out on a location shoot stuck to a computer 20 ft. away.
There is a reason today if I wanted to trade either one of my digital backs for a d3x I probably wouldn't have any offers.
The world has gotten a lot tougher in the last year, demands are much greater and while medium format is still stuggling with a decent lcd preview, the world of cameras are now offering video.
Now if you think the world hasn't changed look at this;http://m.gizmodo.com/site?sid=gizmodoip&am...Gizmodo-5229743
It's just a matter of time that this will become more the norm, than the exception.
All clients want more ROI.