UV Fluorescence -European Garden Spider (Araneus diadematus)

When photographing some plants in Ultra-Violet light in our small car port I noticed there were a couple of spiders on there webs that fluoresced quite nicely. Last night I had a go photographing them.

The first specimen was nice and still. I got the camera set up and correctly focussed with the flashgun ready to illuminate it and I was just about to release the shutter when it suddenly disappeared. A crane-fly had flown into the bottom of the web and the spider dashed off to gets its dinner. I waited for it to wrap its meal but it didn’t stop moving. The flash photos I took were nice and sharp but the ultra-violet ones which took 1-2 seconds showed a lot of movement. Below a show a comparison pair using the best of the UV fluorescence ones (but this still shows motion blur):

The spider with the wrapped up crane fly in daylight flash
The best (but blurred) UV fluorescence view of the spider with the wrapped up crane fly

This next view shows it getting its jaws into its meal:

The spider feeding on the wrapped up crane fly in daylight flash

As there was too much movement I moved to the second specimen. This was perfectly still and I managed to get the flash image and a first UV fluorescent one. While taking a second UV photo another crane fly flew into this web as well. This second UV image showed some movement blur as the crane fly hit the web towards the end of the exposure. Here are the good shots together in a comparison slider:

The second spider waiting on its web taken in daylight flash
The second spider waiting on its web taken in UV light

I might try again depending on the availability of spiders on their webs!

Author: Paul L.G. Morris

I am an amateur photographer whose photography is mostly of gardens, nature and the rural environment. My specialities are close-ups, panoramic views, or a combination of both that I call 'Nearscapes'. I work mostly for my own interest having closed my business PM Studios Ltd.

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