in this random rambling thread we post random pictures

[TonySorrento]

I took this pic last summer ... notice the shadow compared to the bird ....

 

[rebelcowboysnb]

Bird is faster than your camera..

 

[Gargoyle]

I took this pic last summer ... notice the shadow compared to the bird ....

any physicists here who can explain- is the bird faster than the speed of light, or is the camera speed such that the different time it takes for the light from the shadow to reach the lens and the light from the bird to reach the lens was sufficient to cause this?

 

[Matthew3590]

I guess the wings just move faster than the shadow.

 

[canesisters]

photo shop is a wonderful thing.

 

[TonySorrento]

It is NOT photoshopped ... I took this myself ... here is another ....

 

[Bunnylady]

Digital camera?

 

[TonySorrento]

Digital camera?

Yes .... it is my Droid X2 ....

 

[Bunnylady]

Ok, here's a thought, understand I know nothing about these things:

The older style cameras expose film all at one go. But even they can be fooled - there's an old gag with the panoramic shots where you can seem to be in two places at once by moving as the camera does. And we've all seen those time-lapse shots of the night sky . . . .

But how do digital cams work? Do they scan the field? If they scan from say, top to bottom, might it be possible with something as fast as a hummer's wings (something like 200 beats per second, I hear) for the bird's wing to be captured at one moment, and the shadow be caught a few hundredths of a second later?

Even a few thousandths of a second difference could be two different positions of the same stroke.

 

[TonySorrento]

Ok, here's a thought, understand I know nothing about these things:

The older style cameras expose film all at one go. But even they can be fooled - there's an old gag with the panoramic shots where you can seem to be in two places at once by moving as the camera does. And we've all seen those time-lapse shots of the night sky . . . .

But how do digital cams work? Do they scan the field? If they scan from say, top to bottom, might it be possible with something as fast as a hummer's wings (something like 200 beats per second, I hear) for the bird's wing to be captured at one moment, and the shadow be caught a few hundredths of a second later?

That has always been what I thought ... the shadow is farther from the bird, so that could be it....