Magnetic Personality

I recently learned of a fun hack photographers can perform on the Sony DCS-F828 digital camera of 2002 vintage. I happen to have a sort-of-working F828 in my photo closet, so I thought I’d try it out.

My sort-of-working Sony Cyber-shot DCS-F828 of 2002 vintage is shown with three infrared filters.
My sort-of-working Sony Cyber-shot DCS-F828 of 2002 vintage is shown with three infrared filters.

The fact that I just learned about it doesn’t mean it’s new. It only means that I stumbled upon it on one of a million trips into Internet dreamland.

The trick is to use a neodymium (“rare earth”) magnet to move the tiny infrared-blocking filter, sometimes called a “hot mirror” filter, inside the Sony camera. The result is that you can then place an infrared filter on the lens, enabling the photographer to explore the range of the spectrum in wavelengths longer than visible light.

Neodymium magnets are cheap. I ordered mine from Ebay for $9.

Holding this neodymium magnet just above a spot on the bottom of the Sony DCS-F828 digital camera will move the tiny infrared filter out of the light path, or back into the light path, depending on which pole of the magnet is next to the camera.
Holding this neodymium magnet just above a spot on the bottom of the Sony DCS-F828 digital camera will move the tiny infrared filter out of the light path, or back into the light path, depending on which pole of the magnet is next to the camera.

Holding the magnet just above the right spot on the bottom of the lens will either move the filter out of the light path or into the light path, depending on which pole of the magnet is next to the camera. The movement of the filter creates a barely audible “click” from inside the camera, and changes the image on the monitor from black to a kind of deep purple, depending on the filter mounted on the lens.

I have three infrared filters, each blocking a slightly different part of the spectrum. The filters are labeled in nanometers (a billionth of a meter), 720nm, 850nm, and 950nm. The filters appear black to the naked eye, since they don’t pass visible light, but, unlike eclipse glasses, are not safe for viewing the sun, which emits damaging ultraviolet energy.

The idea behind infrared photography is to express a view of the world unlike human vision. Therein lies the challenge, too, since while it is neat to explore our world in a different way, it doesn’t immediately lend itself to a strong narrative. I have explored infrared a couple of times before, but I think it may be time to push a little harder and make images that have more visual value than just “this is different.”

This is a view from my front deck using the Sony F828 with the infrared blocking filter "hacked" out of the light path and a 950nm infrared filter on the lens, yielding an eery, ghost-like rendering of ordinary trees and sky.
This is a view from my front deck using the Sony F828 with the infrared blocking filter “hacked” out of the light path and a 950nm infrared filter on the lens, yielding an eery, ghost-like rendering of ordinary trees and sky.