I am trying to figure out if I can use a Leaf Aptus 12 tethered to a Mac laptop on location. All information I can find is about studio work or using a repeater for the new Thunderbolt Macs. What about a laptop with Firewire 800? (I am open to buy an older Mac) Does it provide enough juice to run the back? I would like to use a laptop in the field to have better control of focus and exposure. Ideally it would be tethered directly to the back, which requires to remove the back's battery and get the power from the computer. Is that doable to run everything from the laptop's battery? If not, what other solutions do you know besides exchanging files via card? What is your workflow in the field with a back and a laptop? If you could guide me to answers, posts, articles, etc that would be great. Thank you. D!RK