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  1. Galleries
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  4. » Rally 3 a1

 
Rally 3 a1...

Rally

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Rally 3 a1 sent on June 26, 2014 (16:12) by Fausto49. 16 comments, 1333 views. [retina]

at 38mm, 1/200 f/10.0, ISO 200, hand held.




View High Resolution 12.8 MP  

2 persons like it: Claudio Santoro, Supertopolo


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avatarjunior
sent on June 26, 2014 (17:08) | This comment has been automatically translated (show/hide original)

I took this photo at the rally

www.juzaphoto.com/galleria.php?t=923196&l=it
could you explain to me why 3 wheel bolts are on the move and one I do not know how to explain
The photo was taken 1/200 f10 ISO200 focal length 38 mm with D800

avatarsenior
sent on June 27, 2014 (0:20) | This comment has been automatically translated (show/hide original)

Ok, this is instinctive panning / involuntary. It's a technique that allows you to have the car, the cyclist, the runner stopped and the background and the legs moving.
In other words, you did follow the movement of the car to the camera. In this way, the car is stationary and the way it moves.
Bolt down moved in the same speed of the car in the same vector resulting stationary. Instead, those on the right and left have moved in a different direction (up-down) being visibly moved. The top, however, having an opposite vector (the car goes to the left, the bolt to the right), is even more moved ... about twice those with vertical movement. I hope I was pretty clear

avatarsenior
sent on June 27, 2014 (0:33) | This comment has been automatically translated (show/hide original)

The bottom bolt has moved in the same car speed on the same vector resulting stationary. Instead, those on the right and left have moved in a different direction (up-down) being visibly moved. The top, however, having an opposite vector (the car goes to the left, the bolt to the right), is even more moved ... about twice those with vertical movement. I hope I was pretty clear

if the car goes forward (to the left) then the top bolt should go to the left and be still for panning .. while the bolt would go down to the right and then be moved .... so is the opposite

in case the car was having a hard braking?

avatarsenior
sent on June 27, 2014 (0:42) | This comment has been automatically translated (show/hide original)

It seems like a panning panning and following the trajectory of the machine at the same time I followed the (imaginary) line of the bolt at that moment

avatarsenior
sent on June 27, 2014 (0:48) | This comment has been automatically translated (show/hide original)

Oh, yeah ... emmeemme you're right! The bolt at the bottom should be moved as is the gravel ...
In fact it is as if it were plugged into reverse while traveling forward!
Vineyard I did not understand what you mean ...

avatarsupporter
sent on June 27, 2014 (1:05) | This comment has been automatically translated (show/hide original)

The explanation for Falconfab is correct, but in this case you do not have to consider the panning motion failed on a linear motion of the machine, it is clear that a fortuitous movement in the car (inaudible, comparable to a vibration) went to "follow" the movement of only that specific bolt, in fact everything else is moved (even the car). An example quite unique. Beautiful shot! hello.

avatarjunior
sent on June 27, 2014 (8:56) | This comment has been automatically translated (show/hide original)

I was like medicalized ambulance driver rescuer could not move much, I made them all different at the start, only this is coming and so I'd be curious to know why

avatarsenior
sent on June 27, 2014 (9:11) | This comment has been automatically translated (show/hide original)

It's like george says. A vibration or a slight movement in the opposite direction to the car, has allowed you to 'stop' a particular, who eventually had the same speed and direction of your focus point.

avatarsenior
sent on June 27, 2014 (11:10) | This comment has been automatically translated (show/hide original)

According to me, 'due to panning and shutter movement that would answer maybe even another mystery of the movement of the bolts not in a circular motion. Indeed the bolt above seems quite follow the axis on which the wheel turns (albeit too linear), but the two have a lateral movement and that 'too ovalized respect to the axis of rotation

avatarsenior
sent on June 27, 2014 (17:02) | This comment has been automatically translated (show/hide original)

He's right Falconfab.

avatarjunior
sent on June 28, 2014 (0:00) | This comment has been automatically translated (show/hide original)

making two accounts should verify that at that time the speed of the bolt roughly coincides with that of the vehicle, which is the object followed with panning!
if there is any fond of mechanics try to put down two formulas to see if han sense not only for me:-D

avatarsenior
sent on June 28, 2014 (14:20) | This comment has been automatically translated (show/hide original)

It could also be a sudden acceleration or braking light, I believe that in both cases the pivot of the movement should be the point of contact of the tire with the ground.
So the bolt on the bottom is firm, the top follows the small oscillation of pneumatico.wow! Wow wow!

avatarsenior
sent on June 28, 2014 (16:37) | This comment has been automatically translated (show/hide original)

is normal, if known, not only the bolt matutta the wheel in the upper half of the lower part is moved. See also the holes in the rim. Following the exposure with the car, the upper part of the wheel has a relative speed greater. Someone more experienced than me can give you a more precise mathematical explanation.

avatarjunior
sent on July 26, 2014 (20:18) | This comment has been automatically translated (show/hide original)

I was curious about your question, basically Daniel Tonini answered sensibly.
And a question of relative motion.
The car moves from right to left and if visually isolate the wheel that has a rotational movement will see that the top of the rim moves in the same direction to the movement of the machine (relatively) and thus its movement is added to the movement of the car and is moved. Instead, the lower part of the wheel moves (relatively) in the opposite direction, then the movement of the bolt in the lower part is subtracted to the movement of the car and approaches zero (therefore stopped or almost) and is not (or little) moved.
Hello
Free

avatarjunior
sent on July 26, 2014 (21:25) | This comment has been automatically translated (show/hide original)

Frankly I think that it is so with thousands (maybe) give f pictures I had never come such a

avatarjunior
sent on August 23, 2014 (14:28) | This comment has been automatically translated (show/hide original)

This is also very beautiful.
Hello Francesco




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