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Jato, Pt 2 - C-119.jpg (1/1)



 
 
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  #1  
Old February 4th 09, 02:02 PM posted to alt.binaries.pictures.aviation
Mitchell Holman Mitchell Holman is offline
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Default Jato, Pt 2 - C-119.jpg (1/1)




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  #2  
Old February 4th 09, 08:45 PM posted to alt.binaries.pictures.aviation
wild1bill
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Default Jato, Pt 2 - C-119.jpg (1/1)

Now that's awesome. Thank you.

wildbill.

"Mitchell Holman" wrote in message
...


  #3  
Old February 4th 09, 08:45 PM posted to alt.binaries.pictures.aviation
wild1bill
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Default Jato, Pt 2 - C-119.jpg (1/1)

Now that's awesome. Thank you.

wildbill.

"Mitchell Holman" wrote in message
...


  #4  
Old February 5th 09, 12:12 AM posted to alt.binaries.pictures.aviation
Oviedo
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Posts: 74
Default Jato, Pt 2 - C-119.jpg (1/1)

Is it an optical illusion, eye strain, or are the props bending?


  #5  
Old February 5th 09, 12:12 AM posted to alt.binaries.pictures.aviation
Oviedo
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Posts: 74
Default Jato, Pt 2 - C-119.jpg (1/1)

Is it an optical illusion, eye strain, or are the props bending?


  #6  
Old February 5th 09, 11:47 AM posted to alt.binaries.pictures.aviation
Peter Twydell
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Default Jato, Pt 2 - C-119.jpg (1/1)

In message , Oviedo
writes
Is it an optical illusion, eye strain, or are the props bending?


This effect can happen with focal plane (?) shutters, which are in
effect a gap moving across the film. They do not see everything at once.
Imagine the shutter opens when a blade is horizontal (at 3 o'clock) and
rotating clockwise. At that point the shutter sees the blade root. As
the shutter goes from left to right (for example), it sees the next part
of the blade in a slightly lower position. By the time it gets to the
tip, that will be at, say, 5 o'clock. The image will therefore be
curved.

See he
http://www.theaerodrome.com/forum/ai...g-propeller-qu
estion.html

Try Googling 'shutter curved propeller' or similar.

HTH
--
Peter

Ying tong iddle-i po!
  #7  
Old February 6th 09, 12:02 AM posted to alt.binaries.pictures.aviation
Oviedo
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Posts: 74
Default Jato, Pt 2 - C-119.jpg (1/1)


"Peter Twydell" wrote in message
news
In message , Oviedo
writes
Is it an optical illusion, eye strain, or are the props bending?


This effect can happen with focal plane (?) shutters, which are in effect
a gap moving across the film. They do not see everything at once.
Imagine the shutter opens when a blade is horizontal (at 3 o'clock) and
rotating clockwise. At that point the shutter sees the blade root. As the
shutter goes from left to right (for example), it sees the next part of
the blade in a slightly lower position. By the time it gets to the tip,
that will be at, say, 5 o'clock. The image will therefore be curved.

See he
http://www.theaerodrome.com/forum/ai...g-propeller-qu
estion.html

Try Googling 'shutter curved propeller' or similar.

HTH
--
Peter

Ying tong iddle-i po!


Thanks for the explaination!

The bending props is a unique effect.


  #8  
Old February 6th 09, 12:02 AM posted to alt.binaries.pictures.aviation
Oviedo
external usenet poster
 
Posts: 74
Default Jato, Pt 2 - C-119.jpg (1/1)


"Peter Twydell" wrote in message
news
In message , Oviedo
writes
Is it an optical illusion, eye strain, or are the props bending?


This effect can happen with focal plane (?) shutters, which are in effect
a gap moving across the film. They do not see everything at once.
Imagine the shutter opens when a blade is horizontal (at 3 o'clock) and
rotating clockwise. At that point the shutter sees the blade root. As the
shutter goes from left to right (for example), it sees the next part of
the blade in a slightly lower position. By the time it gets to the tip,
that will be at, say, 5 o'clock. The image will therefore be curved.

See he
http://www.theaerodrome.com/forum/ai...g-propeller-qu
estion.html

Try Googling 'shutter curved propeller' or similar.

HTH
--
Peter

Ying tong iddle-i po!


Thanks for the explaination!

The bending props is a unique effect.


  #9  
Old February 11th 09, 03:09 AM posted to alt.binaries.pictures.aviation
Richard Brooks[_2_]
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Posts: 40
Default Jato, Pt 2 - C-119.jpg (1/1)

Oviedo said the following on 05/02/2009 23:02:
The bending props is a unique effect.


Almost! The fashion advertising crowd had used that effect with
making racing cars and people lean right over some years ago and it's
made a come-back with the Matrix bullet-time array of cameras showing
people that look like that have been distorted in spirals.


http://people.rit.edu/andpph/photofile-b/lartigue-1.jpg
http://people.rit.edu/andpph/photofile-b/doisneau-1.jpg

http://maisonbisson.com/blog/post/10531/focal-plane-shutter-distortion/
 




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