20080218

DIY Digital Infrared


Most digital cameras are not sensitive enough to capture into the infrared spectrum.
There are ways of modifying sensors for infrared, but it's difficult and usually risks disabling the entire camera.
But there are ways of simulating IR photography.


Pseudo-IR

Pseudo-IR

Pseudo-IR

Pseudo-IR

Pseudo-IR

Pseudo-IR

I taped a makeshift IR filter (unexposed piece of processed Ektachrome film) inside the lens at the bayonet mount (it can be placed on the end of the lens, but found it easier to tape inside). I used my Vivitar 285HV with a red gel folded over several times to light.

The viewfinder cannot be used with the IR "filter" attached. So, I set my distance on the lens and estimated distance. So, This, with the wide open aperture, led to some pretty sketchy focusing.

ISO-1600
Aperture- wide open (f/3.5)
Flash- full power (M)
Flash-to-subject distance- ~6-8"

Canon Rebel XT
Canon 28-135mm f/3.5-5.6 IS lens
Canon offshoe cord
Vivitar 285HV flash


3 comments:

leah_mae said...

This is really interesting i like the look of it. especially on lauren.

Christy Bullins said...

These are very fun and creepy and what not. Teach me!!!

Lanham said...

nice self portrait