Regular readers of this blog know that I am fond of natural sky backgrounds for insects found during the day on flowers and foliage. Not only does the sky provide a clean, uncluttered background that allows the subject to stand out, it also gives the photo a more appropriate temporal flavor—i.e., photographs of diurnal insects should look like they were taken during the day. It’s a little bit tricky setting the camera to allow flash illumination of the subject while still allowing the sky to register as well, but I find such photographs more pleasing and interesting than those with a jet-black background, typical in flash macrophotography, and far more pleasing than those with a jumble of sticks and weeds cluttered behind the subject. These days my daytime insect photos almost always incorporate a blue-sky background (examples here and here) unless: 1) I actually photographed the subject at night (examples here and here); or 2) I wish to highlight an intensely white or delicately structured subject (examples here and here).
But what about in between day and night—specifically, sunset? Incorporating a sunset sky into a flash-illuminated macrophotograph is even trickier than incorporating a blue midday sky because the central problem—low light levels—is magnified. Blue sky photographs challenge the fast shutter speeds and high f-stops usually needed for macrophotographs, but relatively minor adjustments to ISO, shutter speed, and f-stop are usually sufficient to allow the sky to register while still being able to maintain depth of field and minimize motion blur. At sunset, however, because there is much less illumination of the sky, more aggressive settings are often required to allow the sky to register on the camera sensor—settings that can sometimes result in too much motion blur or insufficient depth of field. These problems can be mitigated to some degree with the use of a tripod (and very cooperative subjects), but for dedicated “hand-held” enthusiasts like myself this is not an option. Why bother? Because the results can be spectacular! The setting sun often creates stunning colors not seen at other times of the day and offer a change of pace from blue skies, which, like black backgrounds, can start looking rather monotonous if used exclusively in one’s portfolio.
The photos featured in this post were taken during several sunsets on a trip earlier this past summer through Colorado and Oklahoma. I especially like the jewel beetle (Acmaeodera immaculata?) photograph—technically it has good focus and depth of field and a pleasing composition, but I really like the color coordination between the beetle, flower, and sky. The checkered beetle (Trichodes oresterus?) photograph is also very pleasing, especially the detail on the beetle, although the color of the sky is only somewhat different than a more typical daytime blue. The blister beetle (Linsleya convexa) photograph is probably the most problematic technically due to slight motion blur and being slightly off-focus at the eye—not surprising since of the three this photo had the lowest light conditions. However, the color contrast between the sky and subject make this a nevertheless striking image.
If you have experience with ambient light backgrounds in flash macrophotography, your comments on approaches you’ve taken to deal with reduced light situations will be most welcome.
© Ted C. MacRae 2014