Tips on Creating Awesome Night Vision Digital SLR Photos

Today’s digital SLR cameras offer the photographer full control of aperture, shutter speed and ISO settings enabling the capture of excellent usable images in low light that were not otherwise possible. However, in many situations such as photographing scenes at night with very little ambient light, or telephoto photography at night at a distance, even the best digital SLR cameras simply do not have sufficient sensitivity to capture adequate images. This article provides important guidelines for producing awesome night-time photos when using a night vision module-enabled digital SLR camera.

By adding a night vision module to a digital SLR camera, night turns into day. For situations such as photographing scenes at night with very little ambient light, or telephoto photography at night at a distance, even the best digital SLR camera will be unable to produce adequate photographs without blur.

AstroScope transforms dark scenes into bright, high resolution images that can be easily photographed without the need for additional lighting or longer exposure times. The image is then focused onto the internal detector of the digital SLR camera.

Exposure Mode

In low light, you’ll want to manually open the lens iris to permit the most light to fall on the night vision module’s sensitive photocathode.

Shorter exposure times may provide some improvement if excessive motion is a concern but could unnecessarily darken the image due to the reduction of light being acquired from the night vision module’s image intensifier. Since increasing the gain will amplify the low light level images, even with a night vision module, lower light scenes will become visible. As with all electronic circuits at high gain, image noise can degrade image quality.

Manual Focus

Since night vision modules are generally grainy, the image grain can confuse the SLR camera’s focus sensors.

Use Stabilized Lenses

A camera’s image stabilization feature permits the photographer to use slower shutter speeds without resulting in blur due to camera shake. When using a night vision module, the main disadvantage of the digital stabilization is that the image is blurred on the input of the night vision module resulting in some blur on the intensified output image.

Lens Aperture

The basics still apply for night vision intensified low-light photography. Since the night vision module is merely a light amplifier, if there is no light from the stars and sky or from city lights reflecting from clouds, the night vision module will not be effective. Unlike some digital camera sensors which have some near-infrared response, night vision modules are most sensitive to the near infrared wavelength range and consequently these light sources can significantly enhance the night-time image and render night photography possible despite the lack of sufficient visible illumination.

Image Cropping

For covert night vision photography, don’t forget to disable all camera lighting and sound functions.