ADASTRA SYSTEMS

 Infrared Photos
Coming Soon

Infrared Camera Conversions

We started converting digital cameras to Infrared in 2006, initially for our own use and for giving our web site clients a different angle in photographic presentation. A few of our clients who also enjoyed photography asked us if we could convert a camera for for their own use that led us to develop this part of our business.

We have converted a wide variety of mostly digital compact or bridge cameras as we found their original fixed lens system had no issues in focusing and flare compared with DSLR's, i.e. some dslr lens worked OK and some did not. As this is not our main business we wanted a product we could rely on to produce consistant results.

 

 

 

 

 

 

 

 

HOW IT WORKS
Digital cameras mostly come fitted with an internal filter that cuts off both ultra violet and infrared wavelengths of light, only allowing normal light through. If you attach an infrared filter on the outside of this camera you can naerly always get an infrared photo, BUT, it will require a tripod and sometimes several seconds of exposure, & even then anything that moves will be blurred.

There are two ways of getting round this problem.

1. Remove the internal filter and replace it with a similar sized infrared filter that stops normal light and only allows infrared wavelegths though. Infrared light starts at around 600nm & proceeds above 1000nm. The lower the number the more normal light is allowed through thus allowing for colour infrared photos. The higher numbers produce more traditional black & white infrared photos, as well as slightly increasing the exposure time. The camera modified this way will have one replacement filter of a particular wavelength, e.g. 720nm is a popular choice giving some colour or a black & white image as required. Photos can be then taken handheld and include moving objects. A 720nm camera converted this way in good daylight can take photos @ 1/250 and even higher. An 850nm fitted camera under similar light may come down to 1/125 and below.

Or the alternative & we think more sensible approach ......


2. Remove the internal filter and replace it with a similar sized clear optical glass filter.
This allows all wavelengths through to the sensor. The photos at this stage look slightly surreal with colour changes to the original image. These modified cameras require an external filter thread or additional mounting tube with thread. By adding an external filter you achieve the same result as described in the first option above, as well as having the ability to change your filter at a moments notice. We have found little or no difference in exposure times between the two methods. The bonus of the latter method allows for a small outlay to buy additional filters across the entire infrared range should you so wish. This allows you to take your camera out and use a 680nm filter to obtain blue skies and white foliage for a landscape scene and the simply by changing a filter go to 800nm for some serious black & white architectural shots.

We have a number of camera models we like to work with that have evolved over time. Our primary choice is a decent camera to start with alolng with one that has an external filter thread. The number of mega pixals is not irrelevant, but as long as it is above 5mb you can get a decent A4 quality image.

The present list of camera manufacturers include:Nikon - Sony - Fuji. When we buy our cameras we strip them down and give them a service & clean them up including the sensor and lens. We buy a lot of cameras and sadly a small percentage are not what the seller described. If we spot a problem we try and repair it or failing that the camera is re-used for spares. We offer a 30 day guarantee on faulty cameras with refund or replacement as requested.

 

Please see our items for sale on ebay under the username infraredi