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Explosion timing

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Jerry SmithExplosion timing
by on Jul 12, 2016 at 1:56:01 pm

If you have a little explosion (at 25 fps), how many frames would you use to ramp up to the max? I'm thinking the answer has to be 0,1 or 2.

Same question with a gun.

Same question with a camera flash.

Same question with metal on metal, say a spark of a train wheel on a track.


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Michael SzalapskiRe: Explosion timing
by on Jul 12, 2016 at 2:24:39 pm

Use whatever looks best to you. Sometimes we must make artistic choices that aren't realistic.

An explosion will vary a lot depending on the kind of explosion.

A gun will often flash faster than a frame. Unless you're firing something like a minigun that fires many bullets every second, often a regular gun can be fired a few times without a video camera even picking up the muzzle flash. And, when it is captured, the flash will only be there for one frame.

A camera flash will be there for one frame only.

A spark an be on screen for a few frames as it streaks across.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

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Dave LaRondeRe: Explosion timing
by on Jul 12, 2016 at 2:26:05 pm

On one frame everything is normal, on the next there's an explosion. Or a spark, camera flash or muzzle flash. Generally the short-duration stuff lasts just a frame.

But you know what? You don't have to take our word for it! You can shoot this stuff with a video camera! Who are we to argue with reality?

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA

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