I'm in the US and our local hospital lab has "test fair" week every year when anyone can roll up and get any test for a nominal payment (basic common tests). No doctor involved.
They're saying that it is not a property of the lens, but rather of the perspective of the scene viewed from a distance. You'd get the same effect using any focal length lens, taking the shot from the same location, and cropping appropriately.
Perhaps in contrast to depth of field which is a property of the lens.
The photographer had to move quite a bit further back to get the subject to be the same size in the frame at 150mm as the subject was at 35mm.
They could have used the 35mm lens at the same distance as the 150mm lens and simply cropped and the perspective compression would be the same (it'd just be a lower resolution image).
It'd be interesting to see how short that range really is.
A lot of assumptions about range were based on the idea of a soldier shooting at another soldier, more-or-less at a horizontal level. You had to design a bullet to accurately hit a target and disperse kinetic energy into biological tissue.
Now, you're aiming at something made of non-biological materials of varying size, but they're usually lightweight and have little in the way of redundant flight systems. There's a real chance that if you send up enough small arms fire, you could hit a drone at up to a mile in the sky and cause it enough damage to be unable to complete its mission.
Helicopters are known to be vulnerable to small arms fire. I don't see why an even smaller drone would be any different.
Thanks for posting that reference. I came to do the same after finding that thesis while searching for another book I remember reading. The book covered Wheeler's (I think it was Wheeler) work simulating the first thermonuclear device on borrowed IBM calculating machines in the basement of some place in NYC (I think it was a commercial organization), basically beginning the HPC industry. Anyway, the Fitzpatrick thesis begins asking why it took so long for thermonuclear devices to be developed. I haven't yet had time to read to the conclusion, but presumably "not fast enough computers" is the answer.
Those of us who worked in hardware, or are old programmers will find this familiar. Chip/board routing jobs that took days to complete. Product build/test jobs that took hours to run.
See also that movie with Johnny Depp where AI takes over the world.
Anyone who has worked for a larger than mom and pop company outside the US, who has been sent to the US by their company for some reason knows that the legality of their presence and type of visa needed is top of mind. Triple so when the company is as large as Hyundai. For certain they retain a specialist US immigration law firm.
reply