Let's see... professional DSLR's to be used for spying
That's going to be hard with the camera in the camera bag, where most SLR's are when not in use. But let's assume this one's not.
That's going to be hard with the lens cap on the lens, which is the case with most SLR's that are not in use but not in the bag. But let's assume this one's not.
That's going to be hard with the camera pointing in the right direction, which is pretty hard given the form factor (vertical grip) of a "casual laying around" SLR. But let's assume for some godforsaken reason I tend to store my SLR, without a lens cap, in my living room, mounted on a tripod.
That's going to be pretty hard, unless I have *exactly* the right lens mounted on my camera. Ok, so let's assume that I randomly leave my SLR in my living room, mounted on a tripod, with wide angle lens mounted on it, pointing in the right direction.
That's going to be pretty hard, unless I happen to have it focused on whatever I want to see. Ok, granted, hyperfocal distance on WA lenses is pretty short. But still.
That's going to be pretty hard. Because even though my professional SLR, mounted casually on a tripod in my living room, capturing most of that room, set to hyperfocal distance, without a lens cap, is ready to go, keeping it on "live view" is going to run the battery down pretty seriously, even with the serious batteries those flagship cameras have. You're not going to take pictures in regular SLR mode, right? Because you will hear the shutter on a camera like that. So battery sucking, sensor overheating live view it is.
Mmmh. I guess it's a risk. I always have my SLR with the lens cap off, wide angle lens, covering the entire room, hyperfocal distance, camera on, tethered into a power plug. Wait. If I have my camera tethered in, then why wouldn't I also be tethering it to my PC. Why is it that wireless is a risk? If we're going to make all these half-ass assumptions about using an SLR for spying, why not assume it's hooked up to a computer with a cable? We might as well.
I don't think *wireless* is going to be that much of a security risk.