I promised to post more moonlit images from last Saturday night and Sunday morning, so here they are. In case you missed them, I posted a photograph from that night made at Gates of the Valley here, and another image from Tunnel View here. But it was such a beautiful night, with fresh snow, and mist that stayed around for a long time, so I photographed for almost four hours, and was able to try many different viewpoints and ideas. I’ve included extended captions to give a little more information about each photograph here.
The second image below shows the valley lit by the setting moon. Half Dome and Cathedral Rocks are orange, just as they would be at sunset, only in this case the light came from the moon rather than the sun. We can’t see that moonset color with our eyes because the color-sensitive cones in our retinas shut down when the light gets dim, but the color is there, and cameras can record it. The same thing happens with lunar rainbows; we can’t see the color, but the colorful bands of the rainbow show up perfectly in photographs.
The problem with images lit by the rising or setting moon is that the light is really dim, especially when the moon isn’t full. On this night the moon was two-thirds full, and to expose that moonset image properly I had to push the ISO up to 12,800 ISO at f/2.8 in order to keep the exposure short and prevent the stars from streaking. It’s hard to tell here, but it’s a very noisy photograph – as you might expect from such a high ISO. In hindsight it probably would have been better to open up the aperture to f/2, so that I could lower the ISO to 6400. I’m usually reluctant to use this lens at f/2, because I know the corners will be soft, but in this case it might have been preferable to have softer corners but less noise. Short-exposure night photography really pushes the limits of equipment, and those are the tradeoffs you sometimes have to make.
I used a new camera for all these photographs, a Sony A7rII. Although 12,800 ISO was pushing things a bit (especially since I had to lighten some shadows even further in that image), photographs made at 6400 ISO and below were remarkably noise-free, and overall I was quite impressed with this camera’s nighttime performance – especially since it packs 42 megapixels into a full-frame sensor.
Of course such nitpicky details about noise and sharpness only matter when making larger prints, and are always secondary to image esthetics. We can strive for technical perfection, but the photograph’s emotional impact is more important. So on that note, I hope you enjoy these images – and I hope you’re all having a great holiday season!
— Michael Frye
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Michael Frye is a professional photographer specializing in landscapes and nature. He is the author or principal photographer of The Photographer’s Guide to Yosemite, Yosemite Meditations, Yosemite Meditations for Women, Yosemite Meditations for Adventurers, and Digital Landscape Photography: In the Footsteps of Ansel Adams and the Great Masters. He has also written three eBooks: Light & Land: Landscapes in the Digital Darkroom, Exposure for Outdoor Photography, and Landscapes in Lightroom: The Essential Step-by-Step Guide. Michael has written numerous magazine articles on the art and technique of photography, and his images have been published in over thirty countries around the world. Michael has lived either in or near Yosemite National Park since 1983, currently residing just outside the park in Mariposa, California.