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Infrared Photophraphy
by Romulo Lubachesky



username Romulo Lubachesky
Nikonian in Brazil

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Infrared Photophraphy

Iinfrared photography has the power of showing us a different world. We can travel through the unknown with each image, an unpredictable and astonishing universe that marvels our eyes with unique textures and colors.

The majority of infrared photos are restricted to landscapes and static objects, because a long exposure is required when using infrared filters on normal cameras. The reason for this is the camera sensor sensibility to the visible and infrared electromagnetical spectrum. Thus, normal cameras have a filter often called “Hot Mirror” that blocks the ultraviolet and the infrared.

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Nikon D70r DSLR, 20mm f/2.8D AF Nikkor @ f/4, 140 sec. ISO 200

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If you don't want to be limited to long exposures, it is essential to convert one of your cameras to infrared, a somewhat complex procedure that consists on the removal of the Hot Mirror filter and its replacement by an infrared filter.

After several attempts, in September 2005 I manage to convert my Nikon D70 DSLR camera.

It is now dedicated to capture infrared photos.

The experience of many Nikonians has shown this to be one of the best DSLRs for the task, if not the very best so far.

Renamed by me as D70r, the camera captures images at high speeds, making it possible to photograph people, animals, insects and sports.

After such conversion, the photographer has all the freedom for creativity as offered by a normal camera, however allowing the transformation of any scene into a dreamlike picture.

I used the Hoya R72 filter on my D70r, which still lets a part of the visible spectrum to pass, that corresponding to the red region. This allows the capture of images with different colors.

For example on a landscape photo, with a customized white balance the clear sky turns into a yellowish brown color and the vegetation to light blue.

So this opens up a wide selection of interesting post-processing alternatives and final results.

If this looks scary to do it yourself, there are companies that can do it for you.

Click for enlargement
Click for enlargement

Besides replacing the filter on top of the sensor of your DSLR, it is necessary to recalibrate the camera focus, because the infrared wavelength propagates differently -and even varies from lens to lens- making its image focus plane ahead of the plane of visible light.

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The focus adjustment allows you to photograph using fast lenses stopped down an f/stop or two with a very trustable focus as can be seen in the image at right made with the D70r, Manual Focus 105mm f/1.8 AI-S Nikkor @ f/2.8, 1/640 sec, ISO 200 Click for enlargement
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see also

Infrared and Ultraviolet Phoptography forum
NIKOSCOPE search for Infrared

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