{"id":35329,"date":"2025-12-24T15:31:42","date_gmt":"2025-12-24T15:31:42","guid":{"rendered":"https:\/\/garfnet.org.uk\/cms\/?p=35329"},"modified":"2026-01-20T18:26:41","modified_gmt":"2026-01-20T18:26:41","slug":"infrared-with-a-fairly-decent-camera","status":"publish","type":"post","link":"https:\/\/garfnet.org.uk\/cms\/2025\/12\/24\/infrared-with-a-fairly-decent-camera\/","title":{"rendered":"Infrared with a fairly decent camera"},"content":{"rendered":"

It’s Christmas Eve and my old Lumix DMC-GH2 has just been delivered back, Special Delivery, following its conversion to “full spectrum”, by Protech Photographic<\/a> in Crowborough. Infrared photography is something I have wanted to do for many years. So this year, as a sort of “Christmas present to self”, I decided to have one of my old \u00b54\/3 cameras converted. <\/strong><\/p>\n

\"The<\/a>
The tree at the end of our road.<\/figcaption><\/figure>\n

It’s also a chilly but bright sunny day. So I thought I’d pop outside and grab a few test infrared snaps. I don’t actually have a proper infrared filter yet. I’m still waiting for that to arrive from Shenzhen. So I made do with  a cheap and nasty red filter on a 14-42mm Lumix kit lens, shoved a battery and a card in it, and off I went. Granted these aren’t exactly the most exciting infrared images ever captured. Nevertheless, I’m still rather pleased with the results.<\/p>\n

 <\/div>\n
\"Some<\/a>
Some weeds growing up the side of a house.<\/figcaption><\/figure>\n

They needed surprisingly little editing. A bit of cropping, followed by white balance and palette rotation. This is all very easily and quickly achieved in GIMP<\/a>. In fact GIMP’s “Hue and Saturation<\/em>” tool makes really light work of processing IR images.<\/p>\n

\"The<\/a>
The ironic Christmas wraith<\/figcaption><\/figure>\n

More than meets the eye<\/h2>\n

Human eye only sees a tiny part of the total electromagnetic spectrum – less than an octave<\/em> if you want to think of it in musical terms. That translates to light wavelengths between approximately 700nm (red) and 400nm (violet). With the default IR blocking filter removed, a normal digital mirrorless camera can be extended to see between about 1.2 \u00b5m (near infrared) and 300nm (ultra violet) – though there is significant roll-off of sensor response as wavelengths approach the far-ends of the scale. <\/p>\n

This diagram lifted from Wikimedia explains it better than I can…<\/p>\n

<\/a><\/p>\n

The guy who performed my “full spectrum<\/em>” conversion has some excellent infrared examples<\/a> on his site. Though of course the term “full spectrum<\/em>” is a misnomer, insofar as the conversion still only extends the camera’s frequency range by an octave or so. I have flirted with infrared on security cameras quite a lot. I recently wrote that up in an earlier post<\/a>. But I am a total noob when it comes to photographing infrared with a decent camera.<\/p>\n

Consequently, I still have much to learn…<\/p>\n

Gallery<\/h2>\nngg_shortcode_0_placeholder\n","protected":false},"excerpt":{"rendered":"

It’s Christmas Eve and my old Lumix DMC-GH2 has just been delivered back, Special Delivery, following its conversion to “full spectrum”, by Protech Photographic in Crowborough. Infrared photography is something I have wanted to do for many years. 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