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Old Mar 26, 2007, 2:40 PM   #11
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Thanks for the comments Roger! As Mongrelchild pointed out it isn't an F16 but I believe it to be an F18. Whichever one it was it was neat seeing it happen! Jim
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Old Mar 26, 2007, 2:42 PM   #12
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Thanks TDN! That is one, (the Stealth), starnge looking aircraft ! Jim
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Old Mar 26, 2007, 3:14 PM   #13
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Jim, amazing shot's but it's real great that you've got that cone around the first one,
didn't it go through the sound wall.

Ronny
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Old Mar 26, 2007, 4:00 PM   #14
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First one is awesome. What timing. Did you use continuous mode by chance?

Love the paint job on the MIG.

The Stealth Bomber shows a tinge of CA though.

Did you print any of these by chance?

I am looking forward to the EAA here in Oshkosh, Wisconsin this year and I may even go to Reno, Nevadain September for the Air Races. Both places are a great time to see stuff like this in action.
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Old Mar 26, 2007, 4:33 PM   #15
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Thanks Ronny, From what I could learn on the internet: "Interesting condensation clouds that form around jets as they fly at or near the speed of sound, (often called "going through the sound barrier" or "accelerating past the speed of sound"). Under the right conditions, and even at lower speeds, they sometimes cause a vapor cone effect. Understand that these Prandtl-Glauert condensation clouds can also occur at lower speeds."
also: "The Prandtl-Glauert singularity, the point at which a sudden drop in air pressure occurs, is generally accepted as the cause of the visible condensation cloud that often surrounds an aircraft travelling at transonic speeds, though there remains some debate. It is an example of a mathematical singularity in aerodynamics."


Jim

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Old Mar 26, 2007, 4:38 PM   #16
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Thanks vIZnquest, I was shooting mutiframes for most of my shots. Using CAF. Got really lucky on the vapor cone! There were about 4 frames in all and all were in focus as the cone formed. I'll post all of them later. I haven't printed any yet. I took over 2K pictures and want to select the best for prints! I'm not seeing the CA on my monitor when I enlarge the Stealth ? Jim
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Old Mar 26, 2007, 4:47 PM   #17
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What lens were you using?
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Old Mar 26, 2007, 4:51 PM   #18
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Hayward, The Pentax 75-300. Jim
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Old Mar 26, 2007, 5:03 PM   #19
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These are great.

Specially like the F86 Sabre which I last saw flyingat an airshow about 45 years ago !!!

Ian Mc
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Old Mar 26, 2007, 5:11 PM   #20
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Damn, Jim...those are impressive!! I tried shooting an air show last summer (we have an Air Force base about 5 miles from here) & it was tough trying to get the older planes! You really did a great job. Hope ya didn't get whiplash trying to move so fast!

Ron
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