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to begin with a weak light and go to a stronger light, which will
probably become so strong immediately after the sun rises above the horizon that an halation will form and spoil the end of the scene. Also, at sunset time, there being more dust particles in the air than there are at the beginning of the day, the light is of a better photographic value. Then, too, sunsets happen at a much more convenient time of day than sunrises.
Practically all of the so-called "moon shots" seen in professional motion pictures are really shot Avith the sun, and only in the very far North is one able to photograph the moon itself, and that only under particular conditions, such as the moon near the horizon and the sun still giving enough light to illuminate the landscape. A shot of this character can be improved if the foreground of the scene contains some body of water to carry the reflection.
One of the trickiest things of nature to photograph is a desert mirage. Many contend that as long as a mirage is an optical illusion it cannot be photographed but such is not the case. Anything that can be seen can be photographed if there is a sufficient amount of light. Two things are necessary to get the desired results: first, underexpose just slightly, by using a stronger Alter than you would ordinarily use; and second, use a long focus lens. I have found a six-inch lens to be the best, several times having obtained remarkable effects on California deserts, one in particular with a cloud of dust rising from the surface of the "lake" and shortly afterward an automobile coming out of the synthetic water. I have often photographed trains showing a double image because of the train being reflected in a mirage lake. Tin1 best atmospheric conditions for a mirage is the early morning of a hot day with very little wind to bend the heat waves. These same heat waves will serve to add movement to the "water."
In photographing clouds it is well to remember that the cloud itself is reflecting very strong light back toward the camera. For this reason it is advisable to stop down to the next smaller aperture than would normally be used and to use a
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