[Plane pic] Woohoo !

Started Jun 1, 2008 | Discussions
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cboudier Regular Member • Posts: 413
[Plane pic] Woohoo !

Pentax K100D + Tamron SP 180 f:2.4 Adaptall
Airshow in La Ferté Alais, south of Paris, France
Saturday afternoon, just after / during rain

Raw developped with Lightroom 2b, slightly cropped
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pettitsm Contributing Member • Posts: 527
Nice shot.

Pretty neat shot.

What's the name of that phenomena with the "fog" around the plane? I've seen that in a pic or two floating around the net.

paulf6 Contributing Member • Posts: 504
Re: [Plane pic] Woohoo !

Great capture. I love this kind of shot. Thanks for posting. -Paul

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cboudier OP Regular Member • Posts: 413
Re: Nice shot.

pettitsm wrote:

What's the name of that phenomena with the "fog" around the plane?

Not idea :-/
but it last only about 0.1sec !
The plane made a wonderful acceleration and this phenomena appeared.

Fortunately, I was ready and able to shoot : first pic blurred, second is here

Thank you for your comments
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Gary Martin Veteran Member • Posts: 3,465
Excellent! (n/t)
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ozdean
ozdean Forum Pro • Posts: 23,142
Re: Excellent! (n/t)

Great timing, isn't that when it breaks throught the sound barrier?
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PhotoMoto Contributing Member • Posts: 922
Sonic BOOOOOOOOOOOOOOOOM! :D

Wow cool! I don't know my planes well enough but that to me looks like a sonic boom! :D... (yeah, kind of like what Guile's special move is based on :-P... for those that don't know Guile, look up Street Fighter II :D).

That's basically when the plane or whatever moves faster than the speed of sound.

Did you wait to catch that? Or? Really nice :).

karet Contributing Member • Posts: 503
Re: Nice shot.

pettitsm wrote:

Pretty neat shot.

What's the name of that phenomena with the "fog" around the plane?
I've seen that in a pic or two floating around the net.

Don't know the name, other than condensation. The physics go somewhat like this: During the manoeuvre a vacuum is created above the wing. Due to adiabatic expansion of the air the air temperature drops. Invisible water vapour that is present in the air condensates when the temperature drops below the dew point. What you are seeing are water droplets, fog. Soon thereafter surrounding air moves in, raising pressure and raising temperature so the fog evaporates.

Hmm, could be caused by crossing the sound barrier. Did the photographer hear a sonic boom?
Pictures of going supersonic:

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RBroomall Regular Member • Posts: 178
Re: [Plane pic] Woohoo !

Did you hear a loud BOOM?....shoulda
Fantastic once in a lifetime shot.
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karet Contributing Member • Posts: 503
Sorry for large picture

Sorry, I didn't realise this picture was so large.

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cboudier OP Regular Member • Posts: 413
Re: [Plane pic] Woohoo !

RBroomall wrote:

Fantastic once in a lifetime shot.

Exactly my feeling just after pressing the shutter
I was sure of my catch !

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cboudier OP Regular Member • Posts: 413
Re: Nice shot.

Thank you for this complete explanation.

To all : No, No sound, no boom, just speeeeeeed !
(BTW : in french, we you hear this big boom, it's called the sound's wall)
It was just finishing raining, may be this can explain this ?
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brandrx Forum Pro • Posts: 28,337
Wow! Once in a lifetime shot. Well done. (nt)
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cboudier OP Regular Member • Posts: 413
Re: Sonic BOOOOOOOOOOOOOOOOM! :D

PhotoMoto wrote:

Did you wait to catch that? Or?

I was at the Airshow, that's all.
Exhibitions are often close to the ground, it's easier for photographer

And in this particular case, it's mainly... luck (I mean exceptional skills of course
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albapete Forum Member • Posts: 67
Re: Sonic BOOOOOOOOOOOOOOOOM! :D

Not a sonic boom at all. the wing creates pressure differentials and under humid conditions the vapor is formed. You can see passenger planes do this all the time, especially at rotation. Heres an example.

http://www.airliners.net/photo/KLM%20-%20Royal%20Dutch%20Airlines/McDonnell%20Douglas%20MD-11/0944714/L/&width=1024&height=700&sok=&photo_nr=4&prev_id=0994575&next_id=0940614

MikeAusA200 Senior Member • Posts: 2,057
Sudden fog formation

Congratulations on capturing this rare event so well !

I've seen fog appear and disappear within seconds at very low pressure changes.

I was scuba diving and had my head in a very small cave, a few metres below the surface, which had air trapped in it.

Every time a wave would come over, the water level would rise a few cm and the fog would form, then the water level would drop and the fog would disappear !!!

As the air was trapped over water, the air was saturated with moisture, just like after rain.

PhotoMoto Contributing Member • Posts: 922
Re: Sonic BOOOOOOOOOOOOOOOOM! :D

True true :). Heheh... after seeing the pic, I stopped thinking about airshows haha. Probably because I had seen pics of planes going at supersonic speeds and creating those before (circular forms which don't last long). But yeah, thanks for the explanation :).

Again, great shot. Luck or no luck, thanks for sharing ;).

palmor Contributing Member • Posts: 805
Re: [Plane pic] Woohoo !

Very cool shot, congrats

John
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