As we see the new crop of high-resolution cameras come onto the commercial market (640x480), I would like to remind all to consider what your real needs are rather than just assuming "bigger is better."

Be clear, these amazing new cameras (1) will open up new applications, (2) allow us to do better work in other applications (environmental, large buildings, outdoor sub analysis, etc.), and (3) will be essential for some applications (aerial).

With regard to outdoor utility substations, in particular, I would like to make the distinction between "detection" and "analysis" of problems. Even the 128x96 systems CAN be used to detect problems in subs. The value of detection should not be ignored while we wait around to buy a "more powerful camera." When you can detect one problem from among thousands of potential problems, life is good!

For detailed analysis, of course, more pixels are typically useful and that is where these new systems can shine. Remember, however, that both spatial and measurement resolution are dependent not only on how many pixels you have but also on the field of view (FOV) over which those pixels are spread! Your old 320 or 160 system can also typically yield excellent results, especially with a telephoto lens.

I am very excited about having these powerful new cameras available to thermographers. They will open up new doors for us all. But let's not get so envious that we forget the remarkable tools we already have in hand.

Thermally yours,

John