Question about Pentax Camera Lenses
Im useing an albinar adg 75~300mm lens with a rokunar tele-converter 3x
What is the question?
I'm going to assume that you're getting a featureless white blob for the moon, and you want to know how to fix it.
Switch to manual exposure mode. The camera's meter is trying to make the entire scene a midrange. Since the scene is dominated by a black sky, it will overexpose in an attempt to make the sky come out gray, resulting in the full moon washing out completely.
Think about what you're photographing. It's a big rock under a midday sun, isn't it? The proper exposure for that is the "Sunny-Sixteen-Rule." That simply means that the proper exposure is f/16 at a shutter speed of 1/ISO. So, for ISO 200, use an exposure of f/16 at 1/200 seconds, or an equivalent (such as f/11 at 1/400 seconds, etc.)
If you're using a digital camera, you can check the exposure and the histogram immediately and adjust if necessary. If you're shooting film, bracket a couple of stops in each direction.
Posted on Jan 20, 2010
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