How do I shoot rain drops
Apr 16, 2012 17:49:49 #
We just had a thunderstorm go through our area. It had the works: tornados, high straight winds, large hail, and rain. I don't mean just little rain drops; I mean HUGE rain drops. Some were larger than a nickel. I tried several times to get pictures. They were all failures. I tried P (Program). I went to aperature and set it a f8. I went to shutter mode and set it at 1600. No luck. I could plainly see these drops falling. They seemed to be falling in slow motion.
I'm using a bridge camera Lumex FZ20.
What do you think?
I'm using a bridge camera Lumex FZ20.
What do you think?
Apr 16, 2012 17:52:53 #
You need to use flash to freeze the motion, those little suckers are moving fast!
Apr 16, 2012 17:57:08 #
Seems like i had to learn that once somewhere...snow flurries may be slow,feathers may blow in the wind,but things that drop,that have any substance and weight,including of course water, isn't it 1200' per sec.???
Apr 16, 2012 18:40:22 #
OK, when it comes again flash it is and a very high shutter speed.
Yes, when I was teaching a science class to my third graders I remember an object's highest velocity is 120 MPH. If I would've remember that I would've used a higher shutter speed. But you know, would've, could've and should'ves don't count, not even in photography/
Thanks much for the tip.
t
Yes, when I was teaching a science class to my third graders I remember an object's highest velocity is 120 MPH. If I would've remember that I would've used a higher shutter speed. But you know, would've, could've and should'ves don't count, not even in photography/
Thanks much for the tip.
t
Apr 16, 2012 19:18:53 #
I don't think you can raise the shutter speed with the flash. It should stop the drop at 250, I think.;) I was once told that if I shot a bullet straight up, it comes down at 130 mph. Not sure that is right. Guess I have to do some googling.
Erv
Erv
Apr 16, 2012 20:01:16 #
I had it considerably higher then that and all I got was one big blurry picture. Maybe it was raining too much. I was coming down pretty good. We got just over and inch in about forty five minutes. I'm going to keep trying. I don't know where my flash will stop the shutter speed. Something else for me to find out.
120 or 130 not much difference. It would hurt when you landed at either speed.
120 or 130 not much difference. It would hurt when you landed at either speed.
Apr 16, 2012 20:16:02 #
tramsey wrote:
I think that you have your work cut out for you.I'm using a bridge camera Lumex FZ20. What do you think?
As already suggested, use a speedlight as your sole source of light, and the flash will freeze the raindrops, mid-air. Once a speedlight is attached to your hotshoe, your camera should adjust shutter duration for flash sync at selected aperture. also, I believe that the terminal velocity of raindrops is much slower than 120-mph.
Apr 16, 2012 20:26:10 #
tramsey wrote:
I had it considerably higher then that and all I got was one big blurry picture. Maybe it was raining too much. I was coming down pretty good. We got just over and inch in about forty five minutes. I'm going to keep trying. I don't know where my flash will stop the shutter speed. Something else for me to find out.
120 or 130 not much difference. It would hurt when you landed at either speed.
120 or 130 not much difference. It would hurt when you landed at either speed.
Here is another trick I did one time to stop motion.
Set your camera on a tripod and put it in manual mode. Use a flash unit set to manual. Set the focus distance on the camera at the CN of the flash. Set your ISO as low as it will go, Aperture as high as it will go on your lens (F22, F32 etc.) set your shutter duration at 3 seconds (in heavy rain it will usually be dark enough, if not you can add an ND filter). When your flash light comes on as charged, trip your shutter, you have 3 seconds to aim and manually fire your strobe in whatever direction you want it to come from. Take several shots trying different angles with the strobe. I have never done this with a digital but did it several times with old film cameras and had some very interesting results. One of the most interesting was with the strobe at ground level shooting upward in front of the lens.
Have fun and let me know if it worked for you.
Apr 16, 2012 20:26:24 #
jenny wrote:
Seems like i had to learn that once somewhere...snow flurries may be slow,feathers may blow in the wind,but things that drop,that have any substance and weight,including of course water, isn't it 1200' per sec.???
It's 32 feet per second squared.
Apr 16, 2012 20:46:07 #
jenny wrote:
Seems like i had to learn that once somewhere...snow flurries may be slow,feathers may blow in the wind,but things that drop,that have any substance and weight,including of course water, isn't it 1200' per sec.???
32 feet per second squared. The further it falls, the faster it goes.
Apr 16, 2012 20:47:12 #
Apr 16, 2012 20:49:54 #
RocketScientist wrote:
32 feet per second squared. The further it falls, the faster it goes.
jenny wrote:
Seems like i had to learn that once somewhere...snow flurries may be slow,feathers may blow in the wind,but things that drop,that have any substance and weight,including of course water, isn't it 1200' per sec.???
32 feet per second squared. The further it falls, the faster it goes.
Exactly.
Apr 16, 2012 22:37:05 #
Hmmmm,now most of us have been out of school for awhile,where would we get that sort of info if we didn't remember something? Wow,3rd grade,and here i thought kids were "dumbed down" these days.
Okay then 32' per sec.squared,1024' per sec.,so a shutter speed of 1/1,000 or 1/1,200 would get drops. I've seen streaks done which might look better though.So if having to use flash,that could stop them because duration is -?- at lowest,but up to 1/10,000 sec.?
By the way, i thought the fall rate was a steady speed, if not then what would cause the variation,you've opened the curiosity "file folder" and now i realize that it's true as so often i say i think everything i ever learned is obsolete information,ha :D
Okay then 32' per sec.squared,1024' per sec.,so a shutter speed of 1/1,000 or 1/1,200 would get drops. I've seen streaks done which might look better though.So if having to use flash,that could stop them because duration is -?- at lowest,but up to 1/10,000 sec.?
By the way, i thought the fall rate was a steady speed, if not then what would cause the variation,you've opened the curiosity "file folder" and now i realize that it's true as so often i say i think everything i ever learned is obsolete information,ha :D
Apr 16, 2012 23:00:12 #
jenny wrote:
Hmmmm,now most of us have been out of school for a... (show quote)
After 1 second it would be falling at a rate of 32 feet per second.
After 2 seconds it would be falling at a rate of 64 feet per second.
After 3 seconds it would be falling at a rate of 96 feet per second.
And so on, acceleration increasing by 32 feet per second for each second it falls.
It's speed at the time of impact would depend on how long it has been falling.
Gravity is exerting a constant pull which is why the the rate of acceleration increases.
Apr 16, 2012 23:03:30 #
I think everything that falls from a height hit its terminal velocity and does not get any faster.
Erv
From Goggle:
The terminal velocity is the constant speed attained by a body while falling through a fluid (liquid or gas).
"A free falling object achieves its terminal velocity when the downward force of gravity (Fg)equals the upward force of drag (Fd). This causes the net force on the object to be zero, resulting in an acceleration of zero. Mathematically an object asymptotically approaches and can never reach its terminal velocity.
As the object accelerates (usually downwards due to gravity), the drag force acting on the object increases. At a particular speed, the drag force produced will equal the object's weight (mg). Eventually, it plummets at a constant speed called terminal velocity (also called settling velocity). Terminal velocity varies directly with the ratio of drag to weight. More drag means a lower terminal velocity, while increased weight means a higher terminal velocity. An object moving downward with greater than terminal velocity (for example because it was affected by a downward force or it fell from a thinner part of the atmosphere or it changed shape) will slow until it reaches terminal velocity."
As you can see, the terminal velocity of a body depends on many factors, like the mass of the body, density of the fluid,
density of the body, gravitational acceleration, projected area of the body etc., and is not constant for a particular type of object.
Erv
From Goggle:
The terminal velocity is the constant speed attained by a body while falling through a fluid (liquid or gas).
"A free falling object achieves its terminal velocity when the downward force of gravity (Fg)equals the upward force of drag (Fd). This causes the net force on the object to be zero, resulting in an acceleration of zero. Mathematically an object asymptotically approaches and can never reach its terminal velocity.
As the object accelerates (usually downwards due to gravity), the drag force acting on the object increases. At a particular speed, the drag force produced will equal the object's weight (mg). Eventually, it plummets at a constant speed called terminal velocity (also called settling velocity). Terminal velocity varies directly with the ratio of drag to weight. More drag means a lower terminal velocity, while increased weight means a higher terminal velocity. An object moving downward with greater than terminal velocity (for example because it was affected by a downward force or it fell from a thinner part of the atmosphere or it changed shape) will slow until it reaches terminal velocity."
As you can see, the terminal velocity of a body depends on many factors, like the mass of the body, density of the fluid,
density of the body, gravitational acceleration, projected area of the body etc., and is not constant for a particular type of object.
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.