Diffraction, that is, the bending of light, is a problem that’s encountered by many photographers. But they often don’t even realize it. Meanwhile, diffraction can make your photos lose sharpness. And that’s something that most photographers want to avoid. So it’s good to know what causes diffraction and how to avoid it—and also how to take advantage of it.
One prerequisite for good exposure is a good choice of aperture. The aperture affects how much light makes it through the lens and onto the camera’s sensor. And another important thing—background blurring—depends on it too.
Portrait photography is one of photography’s basic genres. Like the others, it has its specifics that are good to keep in mind so that you can get the very best photos.
When you’re outdoors with your friends or a model and you want to take a few portraits, nature is quite the ideal backdrop. It’s right there, with hardly any “do not enter” signs, and there’s so much of it around you that you can take even quite wide shots without including passersby.
Both at night and at many times throughout the daytime, you can run into situations where there’s not enough light for a good picture. That’s especially true when the days are short and the nights are long. When you don’t have access to daylight or streetlights, you can also use a flash.
The aperture you use fundamentally influences your depth of field, and depth of field fundamentally influences your final picture. In this article we’ll take a practical look at a variety of apertures and how they affect background sharpness.
If you depend on your camera’s automatic settings or you rely on the inbuilt meter when you’re in manual mode, then don’t worry—you’re probably getting correct exposure every time. However, you’re often robbing yourself of unexpected, interesting photos that you could get with creative use of exposure. Don’t be afraid to leave the safe zone of average exposure and try getting creative with your pictures!
In our previous article on exposure settings we introduced the two most basic exposure settings—aperture size and shutter speed. They directly affect how much light falls onto the camera’s digital sensor. There are always multiple ways to combine shutter speed and aperture size to get a correct exposure. Which combination you should choose depends on your creative goals. The relationship between time, aperture, and also the third exposure parameter, ISO, is often called the “exposure triangle.”