The number and shape of aperture blades
The arrangement of the lens aperture affects not so much the quality of the blur as the shape of the blur circles. In fact, so-called blurring circles rarely have a perfectly round shape. They usually look like more or less regular polygons with the number of sides corresponding to the number of diaphragm lobes. The aperture in Nikon lenses has 7 or 9 lobes, in Canon lenses – 6, 7 or 8 (occasionally 9). The more petals there are, the more rounded the blurring disk looks, and an odd number of petals usually produces polygons that are more pleasing to the eye. Continue reading
Getting the correct exposure when shooting with a digital camera is easy. In this article, you will learn what a histogram is, how it can be used to control exposure, and what difficulties you may encounter when determining exposure in practice. I dare to hope that you already know the theoretical basics of exposure and know what shutter speed, aperture, exposure correction, dynamic range, what are the ways of exposure camera and exposure detection modes. Continue reading
Light is the heart of photography. The camera does not see the image. There are no lines, shapes, or textures for it. A film or digital sensor is only susceptible to a stream of photons of higher or lower intensity projected on them by the lens.
Light is much more important than the subject, because, in fact, we are not able to see the object as such, but only see the light reflected from it, which allows us to judge the properties of the object. A novice photographer is looking for a subject to shoot, while an experienced one is hunting for light.
The problem is that both good (from a photographic point of view) and bad light are not always obvious to the untrained eye. Continue reading