{"id":7143,"date":"2022-01-14T22:01:03","date_gmt":"2022-01-14T22:01:03","guid":{"rendered":"https:\/\/www.pmstudios.co.uk\/blog\/?p=7143"},"modified":"2022-01-16T15:27:19","modified_gmt":"2022-01-16T15:27:19","slug":"starting-with-infra-red-photography-part-4-using-ir-filters","status":"publish","type":"post","link":"https:\/\/www.pmstudios.co.uk\/blog\/?p=7143","title":{"rendered":"Starting with Infra-Red Photography Part 4 \u2013 Using IR filters"},"content":{"rendered":"\n

I was a little disappointed with the B&W results of using the camera ‘full spectrum’ (this means it is open to all wavelengths of light from the near infra-red, through the visible range to the near ultra-violet). I purchased a set of infra-red transmission filters for 4 different wavelengths – these pass a narrow band of IR light. This has made quite a difference as you can see below:<\/p>\n\n\n\n

First the full spectrum image:<\/p>\n\n\n\n

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Full spectrum IR image<\/figcaption><\/figure>\n\n\n\n
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Out of the camera IR filtered images<\/figcaption><\/figure>\n\n\n\n

The wavelengths of each filter are: 720nm, 760nm, 850nm, 950nm.<\/p>\n\n\n\n

In the following images I have converted them to B&W using similar settings – I couldn’t do the same settings as the exposures are different:<\/p>\n\n\n\n

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Full spectrum – no IR filter<\/figcaption><\/figure>\n\n\n\n
\"\"
720nm<\/figcaption><\/figure>\n\n\n\n
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760nm<\/figcaption><\/figure>\n\n\n\n
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850nm<\/figcaption><\/figure>\n\n\n\n
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950nm<\/figcaption><\/figure>\n\n\n\n

As you can see, the green foliage is lighter with the filters compared to the unfiltered full spectrum. Although the main image is a tree with others to the side, I suspect they are showing lighter shades because the leaf buds are growing (these often show as dark red to the eye). Below is a ‘normal’ photograph taken a few days ago – the trees are darker, no lighter shades. The taking condition is similar – blue sky some light white clouds with bright winter sun:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

This is proving to be an interesting exercise – I am learning a lot…<\/p>\n","protected":false},"excerpt":{"rendered":"

I was a little disappointed with the B&W results of using the camera ‘full spectrum’ (this means it is open to all wavelengths of light from the near infra-red, through the visible range to the near ultra-violet). I purchased a set of infra-red transmission filters for 4 different wavelengths – these pass a narrow band … Continue reading “Starting with Infra-Red Photography Part 4 \u2013 Using IR filters”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[126,3,65],"tags":[],"class_list":["post-7143","post","type-post","status-publish","format-standard","hentry","category-infra-red","category-photography","category-technical"],"_links":{"self":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7143"}],"version-history":[{"count":5,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7143\/revisions"}],"predecessor-version":[{"id":7558,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7143\/revisions\/7558"}],"wp:attachment":[{"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pmstudios.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}