A pinhole camera, a very basic camera you can even put together at home with any light-proof box, has several applications in photography, including a number of advantages for discrete or hidden photography. While the cameras are usually used for their ability to produce sharp, simple images, the home-made quality and basic functioning of a pinhole camera allow you to adjust the size of the device to slightly more than the size of the film, creating an ideal camera for discrete or candid photography, as long as you take several special considerations into account when taking pictures.
Placement
A pinhole camera allows you to take pictures with nearly constant sharpness at different depth levels, so you should not worry too much about placing a hidden camera somewhat far away from the area you hope to photograph. Pinhole cameras, however, should be kept extremely still while taking pictures in order to produce a high quality image. Thus, the most important consideration when deciding where to place a hidden pinhole camera is the stability of the location. Avoid places with heavy drafts or placing the camera above objects that may move, fall or vibrate. You may even want to use modeling clay or tape to hold the pinhole camera in place in the desired location.
Lighting
Pinhole cameras work simply by exposing film to light through the pinhole opening. Therefore, for faster exposures and sharper pictures, be sure to place the pinhole camera opposite a light source. Of course, excessive light can lead to over-exposed pictures, but if you can manage to place the camera across from a good, indirect light source like a window or a lamp, with the area you hope to photograph in between, you should be able to take a quick, high-quality image. Best of all, pinhole cameras do not use a flash and only require a light input.
Exposure Times
The one disadvantage of using a pinhole camera as a hidden camera is the device's relatively long and variable exposure times. As a pinhole camera does not use digital recording or lenses to focus light, exposure times are heavily dependent on the amount of light in the space you are photographing. Exposure times can also vary depending on the type of film you are using, but generally speaking, a pinhole camera will need between one and four seconds of exposure time (the time in which the pinhole is open and light can enter the box) in well-lit environments and between four and 15 seconds in spaces with medium lighting. Naturally, pinhole cameras will not work in the dark.
When setting up your hidden pinhole camera, be sure that you will be able to keep the device open for the required period of exposure time and vary that time if necessary. Although some commercial pinhole cameras include light sensors and timers, you can also set up a mechanical or manual rig to open your camera for the required period of time.
Sizing
Lastly, perhaps the greatest advantage to using a pinhole camera for candid or discrete photography is the camera's customizable design. As long as you have a shuttered pinhole opening facing the film inside the light-proof box, the casing itself can be of practically any size or shape. Consider making a simple pinhole camera specifically for the location in which you plan on hiding it, maximizing your ability to angle and stabilize the device.
A pinhole camera, a very basic camera you can even put together at home with any light-proof box, has several applications in photography, including a number of advantages for discrete or hidden photography. While the cameras are usually used for their ability to produce sharp, simple images, the home-made quality and basic functioning of a pinhole camera allow you to adjust the size of the device to slightly more than the size of the film, creating an ideal camera for discrete or candid photography, as long as you take several special considerations into account when taking pictures.
Placement
A pinhole camera allows you to take pictures with nearly constant sharpness at different depth levels, so you should not worry too much about placing a hidden camera somewhat far away from the area you hope to photograph. Pinhole cameras, however, should be kept extremely still while taking pictures in order to produce a high quality image. Thus, the most important consideration when deciding where to place a hidden pinhole camera is the stability of the location. Avoid places with heavy drafts or placing the camera above objects that may move, fall or vibrate. You may even want to use modeling clay or tape to hold the pinhole camera in place in the desired location.
Lighting
Pinhole cameras work simply by exposing film to light through the pinhole opening. Therefore, for faster exposures and sharper pictures, be sure to place the pinhole camera opposite a light source. Of course, excessive light can lead to over-exposed pictures, but if you can manage to place the camera across from a good, indirect light source like a window or a lamp, with the area you hope to photograph in between, you should be able to take a quick, high-quality image. Best of all, pinhole cameras do not use a flash and only require a light input.
Exposure Times
The one disadvantage of using a pinhole camera as a hidden camera is the device's relatively long and variable exposure times. As a pinhole camera does not use digital recording or lenses to focus light, exposure times are heavily dependent on the amount of light in the space you are photographing. Exposure times can also vary depending on the type of film you are using, but generally speaking, a pinhole camera will need between one and four seconds of exposure time (the time in which the pinhole is open and light can enter the box) in well-lit environments and between four and 15 seconds in spaces with medium lighting. Naturally, pinhole cameras will not work in the dark.
When setting up your hidden pinhole camera, be sure that you will be able to keep the device open for the required period of exposure time and vary that time if necessary. Although some commercial pinhole cameras include light sensors and timers, you can also set up a mechanical or manual rig to open your camera for the required period of time.
Sizing
Lastly, perhaps the greatest advantage to using a pinhole camera for candid or discrete photography is the camera's customizable design. As long as you have a shuttered pinhole opening facing the film inside the light-proof box, the casing itself can be of practically any size or shape. Consider making a simple pinhole camera specifically for the location in which you plan on hiding it, maximizing your ability to angle and stabilize the device.
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