Erik<p>A wider view of the <a href="https://fosstodon.org/tags/fluorescence" class="mention hashtag" rel="tag">#<span>fluorescence</span></a> from these flowers under 365nm <a href="https://fosstodon.org/tags/UV" class="mention hashtag" rel="tag">#<span>UV</span></a> light, showing a more varied range of colors than just blue.</p><p><a href="https://fosstodon.org/tags/macrophotography" class="mention hashtag" rel="tag">#<span>macrophotography</span></a> <a href="https://fosstodon.org/tags/flowers" class="mention hashtag" rel="tag">#<span>flowers</span></a> <a href="https://fosstodon.org/tags/uvphotography" class="mention hashtag" rel="tag">#<span>uvphotography</span></a> <a href="https://fosstodon.org/tags/photography" class="mention hashtag" rel="tag">#<span>photography</span></a></p>
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#uvphotography
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Erik<p>While working on more multispectral images, I noticed the ethereal blue <a href="https://fosstodon.org/tags/fluorescence" class="mention hashtag" rel="tag">#<span>fluorescence</span></a> of these flowers under ultraviolet light. </p><p>This was done with 10 seconds of light painting with a 365nm UV flashlight, captured using an unmodified mirrorless camera. </p><p><a href="https://fosstodon.org/tags/uvphotography" class="mention hashtag" rel="tag">#<span>uvphotography</span></a> <a href="https://fosstodon.org/tags/photography" class="mention hashtag" rel="tag">#<span>photography</span></a> <a href="https://fosstodon.org/tags/macrophotography" class="mention hashtag" rel="tag">#<span>macrophotography</span></a></p>
Erik<p>A false-color <a href="https://fosstodon.org/tags/multispectral" class="mention hashtag" rel="tag">#<span>multispectral</span></a> photo I took of a larkspur with UV and IR light mapped on top of a regular visible-color photo. Inner parts of the flower petals reflect more UV than others and thus show up in blue. Other parts absorb UV but reflect IR, resulting in the red colors seen in the inner part of the flower and stems. Many flowers use this contrast to help pollinators (who often can see UV) to distinguish key parts of the flower.</p><p><a href="https://fosstodon.org/tags/photography" class="mention hashtag" rel="tag">#<span>photography</span></a> <a href="https://fosstodon.org/tags/uvphotography" class="mention hashtag" rel="tag">#<span>uvphotography</span></a> <a href="https://fosstodon.org/tags/infraredphotography" class="mention hashtag" rel="tag">#<span>infraredphotography</span></a></p>
Erik<p>Another <a href="https://fosstodon.org/tags/multispectrum" class="mention hashtag" rel="tag">#<span>multispectrum</span></a> image showing <a href="https://fosstodon.org/tags/infrared" class="mention hashtag" rel="tag">#<span>infrared</span></a> and <a href="https://fosstodon.org/tags/ultraviolet" class="mention hashtag" rel="tag">#<span>ultraviolet</span></a> light in red and blue, respectively. Note how the blue UV light glitters and reflects from the edges of the petals, while the interior of the petals and the stalk in the background glows red from reflected IR (the “Wood Effect”).</p><p><a href="https://fosstodon.org/tags/IRphotography" class="mention hashtag" rel="tag">#<span>IRphotography</span></a> <a href="https://fosstodon.org/tags/infraredphotography" class="mention hashtag" rel="tag">#<span>infraredphotography</span></a> <a href="https://fosstodon.org/tags/uvphotography" class="mention hashtag" rel="tag">#<span>uvphotography</span></a> <a href="https://fosstodon.org/tags/photography" class="mention hashtag" rel="tag">#<span>photography</span></a></p>
Erik<p>Latest <a href="https://fosstodon.org/tags/multispectrum" class="mention hashtag" rel="tag">#<span>multispectrum</span></a> image, showing what a flower might look like if we saw beyond visible light into the UV and IR spectra. </p><p>I’ve mapped IR light to red and UV light to blue, and added them to the existing red and blue data from the ordinary RGB image (included for comparison). Notice how the spots on the petals reflect IR light (and thus glow red), and how outer parts of the petals reflect more UV (blue).</p><p><a href="https://fosstodon.org/tags/IRphotography" class="mention hashtag" rel="tag">#<span>IRphotography</span></a> <a href="https://fosstodon.org/tags/photography" class="mention hashtag" rel="tag">#<span>photography</span></a> <a href="https://fosstodon.org/tags/UVphotography" class="mention hashtag" rel="tag">#<span>UVphotography</span></a></p>
Erik<p>My first image from my hacked-together <a href="https://fosstodon.org/tags/multispectral" class="mention hashtag" rel="tag">#<span>multispectral</span></a> (IR, UV, and visible light) camera. Near IR is in red, visible light is in green, and UV is in blue. </p><p>The camera itself is a monochrome camera I normally use for solar imaging, while the lens is just a regular Nikon 50 f/1.8D. Between the two is an electronic filter wheel with IR pass, IR cut, and UV pass filters.</p><p><a href="https://fosstodon.org/tags/uvphotography" class="mention hashtag" rel="tag">#<span>uvphotography</span></a> <a href="https://fosstodon.org/tags/irphotography" class="mention hashtag" rel="tag">#<span>irphotography</span></a> <a href="https://fosstodon.org/tags/photography" class="mention hashtag" rel="tag">#<span>photography</span></a></p>
GegenWind Photography<p>We photographed a Halloween climbing event yesterday and they really followed the motto "Are you afraid of (climbing in) the dark?" </p><p>Well - are you?</p><p><a href="https://mastodon.social/tags/bouldering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bouldering</span></a> <a href="https://mastodon.social/tags/climbing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>climbing</span></a> <a href="https://mastodon.social/tags/halloween" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>halloween</span></a> <a href="https://mastodon.social/tags/uv" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>uv</span></a> <a href="https://mastodon.social/tags/ultraviolet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ultraviolet</span></a> <a href="https://mastodon.social/tags/uvphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>uvphotography</span></a> <a href="https://mastodon.social/tags/eventphotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eventphotography</span></a> <a href="https://mastodon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a></p>
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