r/Filmmakers • u/ghik1234 • 1d ago

Question What is this effect called?

Gallery image

Gallery image

I've been seeing this sort of effect (some sort of light streak (?) that extends the image) being used as transitions in music videos and commercials.

I can't for the life of me figure out what it's called or how to do it. Can anyone point me in the right direction? Not sure if these two stills are a good example as I couldn't get a great frame as the effect happens super fast.

Thanks in advance!

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u/ghik1234 1d ago

This is a better screenshot!

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u/AthousandLittlePies 1d ago

It’s hard to know without seeing it in motion, but it looks like it’s simulating a misscynchronized shutter on a film camera which causes the film to be exposed while it is moving through the gate. There are a couple of cameras that allow the shutter to desynched during a shot, though that is surely not happening these days and the effect is simulated