Tag Archives: SD14

Interval Infrared Photography of Dust

 

The dust level in one room of my house reached 3.5 million particles per cubic meter, where the particles were detected at a size of less than two microns (with some potentially as small as 500 nanometers) – using a Dylos 1100 (“Pro” version) electronic particle detector.  I have several detectors of various sorts. Often, the alarm on one of them is triggered in the middle of the night.  The other detectors do not have audible alarms.  In search of the cause of huge night-time spikes in the level of particulates, I used an IR camera to take shots of the affected room.

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Comparing a Pentax K5 to a Sigma SD14

Figure 1: Antique maritime binoculars shot by the SD14 (by Sigma).

So, it seems that camera comparisons are never really apples and apples, but instead apples and oranges or pineapples.  Why compare a camera that is circa ~2007 (the Sigma SD 14) with a much newer camera such as the K5 from 2013?

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Infrared Photography with an SD14

Figure 1An unexpected explosion of infrared on my dry erase board.

Is there such a thing as an infrared bomb?  I’m hard pressed to explain the picture in figure 1, one of the first infrared photos I’ve taken with the SD14.  I had just taken the shot in figure 2 (a photo of me looking like an infrared zombie) – and had gotten up to check the camera.  Without touching the tripod, I snapped off another shot of the dry erase board that hangs on the wall behind the chair I had just vacated.  The photo of figure 1 emerged as a result.

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