Beyond Visible Light: The Lone Cypress in Infrared
Shree Sabbineni
Award: Top 100
School: dougherty valley high school
Teacher: sarah militante
Category: Natural
Photo #21163
Beyond Visible Light: The Lone Cypress in Infrared
This infrared photograph of the Lone Cypress was captured using a modified Sony Cyber-shot DSC-F828 camera with NightShot mode and an R72 infrared-pass filter. The modification disables the internal infrared-cut filter, allowing near-infrared light to reach the sensor. The R72 filter blocks most visible light, so the image is formed mostly from infrared reflectance rather than natural color.
In infrared imaging, brightness depends on how surfaces reflect or absorb infrared radiation. The Lone Cypress appears bright because healthy vegetation strongly reflects near-infrared light because of the internal structure of leaves and scattering within plant tissue. The ocean appears dark because water absorbs most infrared wavelengths, leaving little reflected light. The rocky cliffs appear in mid-tones because their reflectance varies with mineral composition, texture, and surface roughness.
Because the filter reduces incoming light, the sensor receives a much lower photon count. This requires longer exposure times or increased sensor sensitivity to produce a properly exposed image. The CCD sensor in the DSC-F828 is relatively responsive to infrared light compared to modern heavily filtered sensors, making it useful for this technique. Infrared light also experiences less Rayleigh scattering than visible light, reducing atmospheric haze and improving clarity in distant objects. This enhances depth while maintaining smooth tonal transitions across the landscape. Overall, this image demonstrates how infrared photography reveals unseen patterns in nature by mapping electromagnetic reflectance rather than visible color. It offers a different way of seeing the world, interpreted through energy response instead of color perception.
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