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Hi Everyone:</div>
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I recently produced a 9 minute Youtube video that uses extensive slow motion cinematography to capture several species of
<i>Bombus </i>in flight, foraging for nectar on <i>Pedicularis </i>and <i>Lithospermum</i>, buzz pollinating
<i>Primula meadia</i> flowers, grooming pollen and searching for nest sites.</div>
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Here is a link to the video in case you haven't seen it <span style="color: blue;"><a href="https://youtu.be/fQsnPAWQqcI" target="_blank" id="OWAf45e1246-157a-1ab0-79a9-89cf2d37bfa4" class="x_OWAAutoLink" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0" style="color: blue; margin: 0px;">https://youtu.be/fQsnPAWQqcI</a></span></div>
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Several researchers have asked me to describe how I captured such high resolution macro video at ¼ normal speed. Here is a brief summary, but feel free to email me if you have additional questions.</div>
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My students and I shoot video with the Canon Full Frame R5 mirrorless camera. This camera produces very high quality 4k video at 120 fps. Since I present the video using the "US standard" 30 fps, this is ¼ normal speed. </div>
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Most closeups were shot at 400 mm with Canon's RF 100-400 mm telephoto zoom lens. I shoot with a telephoto lens, rather than a macro lens, so that I can capture images of bees visiting flowers 3-4 meters away. The 4k video is so detailed that I can further
crop the image to provide an even narrower field of view. So I typically do 30-50% video crops using Powerdirector 365 software to fill the frame with bee and flower. </div>
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Our study site is ½ mile from Lake Michigan, and there is always at least a 10 mph wind. Fortunately the R5 camera has outstanding in-camera stabilization, ensuring smooth telephoto video. We shoot most of our video handheld, but sometimes use a monopod on
very windy days.</div>
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One thing we do a bit differently than most people shooting slow motion video is that we use a shutter speed of 1/1000th sec to minimize motion blur. Thats why you can see the bumble bee wings flapping so clearly.</div>
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Sincerely,</div>
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Jeff Karron</div>
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Professor of Biology</div>
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University of Wisconsin-Milwaukee</div>
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karron@uwm.edu</div>
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<a href="http://www.karronlab.com/" target="_blank" id="OWA634cbe24-ae04-f3d4-8310-c45135dedb51" class="OWAAutoLink" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="1" style="margin: 0px;">Www.karronlab.com</a> </div>
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