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| The moon at f/8, 1/1000 sec and ISO 640 |
A few years ago I wrote a post about
how to shoot the moon.
On July 31, 2012, I found the moon to be near perfect light.
It was 8 p.m. in California when I took my camera outside and used it to play with the moon (so to speak).
I knew I had to shoot it by focusing in on it by zooming my camera to 105 mm (I know that's not much, but it is enough to get a good Internet resolution image when viewed at 100 percent screen resolution). That was obvious.
To be sure, I wish I had my zoom lens and a tripod, but I didn't so I decided to see if I could get a sharp shot of the moon without all that. Also, most people don't carry around those things.
My camera, a D5, had been set to aperture priority mode. Initially I had set the aperture to f/4. That's an appropriate aperture for such a small object in the sky shot at a not-very-large focal length. My ISO was set fairly high so that my sensor would be sensitive to the light, causing the shutter to open and close faster.
Then I shot. The moon was blasting white, an effect I didn't want because you couldn't make out the moon's detail.
Then I recalled the last time I shot the moon I had to be free to set my camera to a fast shutter speed so I reset my camera to a high shutter speed in Tv mode. First I set the shutter speed to 1/2000 seconds. The moon was too dark, but it did pick up the detail. Then I tried 1/1000. That worked, but the aperture (f/4) was blinking, which normally means that the aperture set by the camera for the shutter speed I set it to was not wide enough to properly expose the shot.
Since I was shooting just a small object in the sky against a large darker background with a center-weighted focus, I could see by the f/4, 1/1000 shot that the moon was still a bit too bright. There was also a bit of camera shake in the image. I realized that if I made the aperture narrower, I could make the moon darker and get rid of the blinking.
This had me setting my camera to manual mode, then set the aperture to f/8 and using the same shutter speed (1/1000) so that less light can come into the lens.
Finally, I took a shot. The last shot was perfect. Lots of detail and very sharp. An image good enough to blow up to 100 percent and put here on my blog.
These settings work well if the sky is still blue (dusk) with some ambient light, holding the camera as steady as possible.
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