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#21
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In article kXwrg.62937$ZW3.47903@dukeread04,
"Jim Macklin" wrote: Note the time delay is just a few seconds as the airplane passes overhead and the wake rocks the boat, that was not a telephoto lens but a real close pass. And how do you know there was not some special effects contraption out of sight behind the rowboat to generate those waves? Remember... it's only a movie! |
#22
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In article kXwrg.62937$ZW3.47903@dukeread04,
"Jim Macklin" wrote: Note the time delay is just a few seconds as the airplane passes overhead and the wake rocks the boat, that was not a telephoto lens but a real close pass. I watched the scene several times last night. Note that the camera pans down to see the boat "rocked" but by what? The bow wave doesn't look close to the boat and it seems hard to figure out the distant between the plane and the boat. Doesn't a long lens put the background out of focus? (or did I get that backwards?) -- Bob Noel Looking for a sig the lawyers will hate |
#23
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![]() "Jim Macklin" wrote in message news:l8trg.62919$ZW3.30020@dukeread04... Don't confuse normal airport traffic near a runway with boat traffic on a lake or harbor. On a lake, a take-off or landing may come closer than 500 feet to a boat, but it should NEVER be aimed at that boat. Certainly not without the boat occupants' competent cooperation; that would be reckless. But in this case (assuming the scene was even real), the stunt performers in the boat *were* cooperating, and presumably had the expertise to do so safely. Your assertion that 91.119 prohibits the takeoff can't be correct, because otherwise 91.119 would also forbid you to take off or land whenever doing so would bring you within 500' of a person or vehicle. There's nothing in the wording of 91.119 that addresses whether or not you are "aimed at" the object you come close to. --Gary "Gary Drescher" wrote in message . .. | "Jim Macklin" wrote in message | news:Bmirg.62828$ZW3.25169@dukeread04... | Note that just because you are taking off, you still must | comply with the regulations. | | Huh? According to the beginning of 91.119, parts a, b, and c *do not | apply* | during takeoff or landing. If they did apply, then it would be illegal | for | you to land on a runway whenever another plane is holding short less than | 500' from your flight path! | | key word, necessary... or was the take-off necessary. | | No, that's not a sensible parsing of the qualifier "Except when necessary | for takeoff or landing". | | A takeoff is virtually never necessary. So if 91.119 meant what you think it | does, then you'd be forbidden to take off from a runway if your flight path | would bring you within 500' of another aircraft that's on the ground near | the runway (on a parallel taxiway, for example). Is that really the rule you | follow when you fly? | | --Gary | | |
#24
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![]() "Bob Noel" wrote Doesn't a long lens put the background out of focus? (or did I get that backwards?) Yep. Everything is in focus with the long lens. -- Jim in NC |
#25
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And it could all be CG from ILM starring real space aliens.
Your point is that you want to defend an unsafe operation and I am suggesting that pilot's put legality and safety on the top rung. -- James H. Macklin ATP,CFI,A&P "john smith" wrote in message ... | In article kXwrg.62937$ZW3.47903@dukeread04, | "Jim Macklin" wrote: | | Note the time delay is just a few seconds as the airplane | passes overhead and the wake rocks the boat, that was not a | telephoto lens but a real close pass. | | And how do you know there was not some special effects contraption out | of sight behind the rowboat to generate those waves? | Remember... it's only a movie! |
#26
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The FAA has been much more safety minded since they killed
Vince Morrow. Lots of risks can be accepted. But some risks should not be taken or encouraged. -- James H. Macklin ATP,CFI,A&P "Gary Drescher" wrote in message . .. | | "Jim Macklin" wrote in message | news:l8trg.62919$ZW3.30020@dukeread04... | Don't confuse normal airport traffic near a runway with boat | traffic on a lake or harbor. On a lake, a take-off or landing | may come closer than 500 feet to a boat, but it should NEVER | be aimed at that boat. | | Certainly not without the boat occupants' competent cooperation; that would | be reckless. But in this case (assuming the scene was even real), the stunt | performers in the boat *were* cooperating, and presumably had the expertise | to do so safely. | | Your assertion that 91.119 prohibits the takeoff can't be correct, because | otherwise 91.119 would also forbid you to take off or land whenever doing so | would bring you within 500' of a person or vehicle. There's nothing in the | wording of 91.119 that addresses whether or not you are "aimed at" the | object you come close to. | | --Gary | | "Gary Drescher" wrote in message | . .. | | "Jim Macklin" wrote | in message | | news:Bmirg.62828$ZW3.25169@dukeread04... | | Note that just because you are taking off, you still | must | | comply with the regulations. | | | | Huh? According to the beginning of 91.119, parts a, b, | and c *do not | | apply* | | during takeoff or landing. If they did apply, then it | would be illegal | | for | | you to land on a runway whenever another plane is | holding short less than | | 500' from your flight path! | | | | key word, necessary... or was the take-off necessary. | | | | No, that's not a sensible parsing of the qualifier "Except | when necessary | | for takeoff or landing". | | | | A takeoff is virtually never necessary. So if 91.119 meant | what you think it | | does, then you'd be forbidden to take off from a runway if | your flight path | | would bring you within 500' of another aircraft that's on | the ground near | | the runway (on a parallel taxiway, for example). Is that | really the rule you | | follow when you fly? | | | | --Gary | | | | | | | | |
#27
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Yep. Everything is in focus with the long lens.
Nope. With a long lens, the depth of field is narrowed. That means that if the foreground is in focus, the background will be =more= out of focus than it would be had one used a short lens. There are of course other variables (f-stop and film format) but all else equal, the long lens narrows the depth of field and makes things seem "on top of each other". You can also get a sense of relative distance if you know the sizes of the plane and boat in question, and measure the image. Jose -- The monkey turns the crank and thinks he's making the music. for Email, make the obvious change in the address. |
#28
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In article ,
Bob Noel wrote: In article kXwrg.62937$ZW3.47903@dukeread04, "Jim Macklin" wrote: Note the time delay is just a few seconds as the airplane passes overhead and the wake rocks the boat, that was not a telephoto lens but a real close pass. I watched the scene several times last night. Note that the camera pans down to see the boat "rocked" but by what? The bow wave doesn't look close to the boat and it seems hard to figure out the distant between the plane and the boat. Doesn't a long lens put the background out of focus? (or did I get that backwards?) Focus is a function of "depth of field" which is determined by the apperature (f-stop) and shutter speed. The higher the f-stop (smaller the apperature) the more the light rays which pass through the lense are parallel, making the background more in focus. |
#29
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Note the time delay is just a few seconds as the airplane
passes overhead and the wake rocks the boat, that was not a telephoto lens but a real close pass. It was most definately a telephoto lens. I'm not convinced that the wave that rocks the boat is the bow wave. We could figure all this out - what kind of plane was it, what is its dimensions? (hull width, engine spacing, wingspan). What is its typical approach speed? It was also a close pass, but nowhere near as close as it looks. That's how movies work. And remember, right at the end of a regular short runway is stuff you don't want to hit too, but we take off of short runways all the time. It would be reckless for you and I and a few friends to go and do this. However, Hollywood stunt people are well trained in these kinds of things, they know, understand, and accept the risks (just like aerobatics pilots do things that would be reckless for you or I to do alone). I have no problem with the flying in the shot. Jose -- The monkey turns the crank and thinks he's making the music. for Email, make the obvious change in the address. |
#30
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Jim Macklin wrote
I guess when you're making a movie, violation of the FAA and USCG laws are OK? It's pretty obvious to me that the airplane and the boat were never in the same lake together. Just a large rear-projection screen like Hollywood used in the past, or a good old blue/green screen effect. Notice the number of different camera angles used to film the boat and the men in it. 1. A wide angle shot from some distance off the port side of the boat. 2. A close-up of the man in the bow shot from the stern of the boat or even outside the boat near the stern. 3. A close-up of the man and the engine shot from the water on the starboard side of the boat. How, and to where did all of those other cameras disappear to? Nope! just a series of video clips assembled in front of a blue screen. Bob Moore |
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