Photography Magazine

Now that you’ve learnt what sound photography is all about (PART I), you are ready to take your first few sound photographs. You will need -

1. A Camera with the capability of long exposures, preferably a T option.
2. 2. The sound switch mentioned in the first article in this series
3. A flash unit with connector cable
4. The props – in this case, a glass of water and a few ice cubes

The most important stage in all studio photographs is the initial set-up stage. You get the set-up wrong, and theres no chance you will get a decent photograph at the end of the day. To set up the sound trigerred splash photo, lets start with the lighting. Keep the glass of water stationary with a black background. Make sure there is enough distance between the glass and the background, to get a totally dark black background on your image.

Now, place a light behind the glass, in between the glass and background. Place it so that it is lower than the table on which you’ve kept the glass, to avoid lens flare. Focus the flash towards the glass so no light falls on the background, fire a test shot to see if the lighting is ok – and if it is, you are ready to go to the next step.

You will be dropping an ice cube into the water, to let off the sound switch with the ‘plonk’ sound made by the ice as it hits the water/glass edges. Since this really isn’t a loud sound, you will need to ensure the microphone gets all the sound it can from the glass. It is great to connect the mike to a longer cable, to the circuit. That way you can place it next to or even under the glass, if the glass doesn’t topple over…now the switch should get triggered by the slightest sound in the glass. Try it out by gently tapping the glass with a fork. If it fires, you are ready to roll. If it doesn’t, check the position of the microphone and all the connections (flash to circuit and mike to circuit). Make sure the flash is ON!

Next, we set the camera to time exposure, and use the same aperture that you had for the trial shot. Remember, the shutter speed wont matter since you are going to darken the room. Go ahead and darken the room now. Fire the shutter. Drop the ice cube in the water. The flash should fire with the sound of the ice striking the surface of water. Once this is done, close the shutter. Now, check out the results! You may need to shoot a few images before you get the right splash effect…

We’ve just learnt a technique that allows you to shoot splash images with a cost-effective set-up, without an expensive strobe unit..

Did you know that you can synchronize your photography with a sound operated switch? This has many applications – some that are fun, some that are for scientific uses and some that find their applications in advertising photography. It is very interesting, and at the very least – something that you would like to try your hand at, just for the sake of the challenge. This project however, requires you to have at least a basic understanding of electronics if you would like to construct the apparatus required your self. On the other hand, you could always have it made at an electronics outlet or even but a ready made sound switch from something like Radio Shack (which would obviously cost you a bit more). Do keep in mind that this project is harder than anything we’ve covered so far, and is aimed at the advanced amateurs and professional photographers.

The Principle Behind Sound Photography

Have you ever considered the factors that influence your lighting when using a flash unit? Well, the main light source is of course the flash unit itself. It is true that when you use a slowish shutter speed to get a ‘mixed lighting effect’, ambient light does come into the picture. But, when you use a high shutter speed, say for example the flash sync speed of the camera, it is nothing but the flash that has a major effect on your photograph. If you are shooting in a darkened environment, or at night in the outdoors, it is solely the flash that will effect your lighting and nothing else, whatever the shutter speed, even if it is something as slow as 4 seconds or above. When you consider the fact that the duration of flash is much much shorter than the highest shutter speed on most cameras, it becomes quite obvious that this short burst of light can freeze a high speed action quite effectively. If the high speed action is accompanied with a burst of sound (for example, a firecracker exploding, a balloon bursting or an ice cube falling into a glass), the flash can be triggered using a sound switch; to capture the ‘decisive moment’ when the action is at its peak.  Let us look at the construction of the switch…

The Sound Switch

This trigger was constructed using a DIY ‘clap switch’ circuit (readily available with hobbyists). If you are making it your self, do mention at the hobby store that you intend to use it as a trigger and not as a power output circuit. Alternatively, you can get readily available sound triggers dedicate to photographic use, but they would cost you a bit more. In any case, the apparatus would have a microphone one one ‘end’, and a flash connection socket at the other. If your flash unit does not provide an output cable, you will need to invest in a hot shoe adapter and a connecting cable. Connect the flash to the circuit and test it by clapping your hands. If everything is as it should be, the flash should fire when you clap your hands!