Optimum Aperture Selection
The ability to effectively use an existing lens has a much greater effect on the sharpness of a photograph than the choice of the lens itself. The number of apertures…

Continue reading →

Capacity
The bit depth or color depth of a digital image is the number of binary bits (bits) used to encode the color of a single pixel. It is necessary to…

Continue reading →

Man and camera see the world differently
Often a scene that looked attractive to our eyes appears completely unpresentable in the photo - with a whitish, illuminated sky, with black dips in the place of shadows, with…

Continue reading →

camera processor

How to find out the pixel size of a matrix?

Why might a photographer need a pixel size? There are enough such situations. Knowing the pixel size can be useful for determining safe shutter speeds when shooting with handhelds, because the smaller the pixel, the more noticeable the camera shake appears in the pictures, and the shorter shutter speed may be needed to eliminate movement. Having no idea about the pixel size of the matrix of your camera, you can not seriously talk about the depth of field, since the allowable diameter of the scattering circle directly depends on the size of the pixel. The value of the diffraction-limited aperture for a particular camera also depends on the pixel size. Finally, it is possible that when comparing multiple cameras, you will want to find out which one has a higher pixel density, which means it provides better detail and is more suitable for shooting distant objects.

The instructions for digital cameras very rarely indicate the pixel size of the matrix, but, fortunately, this parameter is quite easy to calculate on your own.

In most instructions, you can find information about the physical size of the photomatrix, as well as its linear resolution, Continue reading

Lens device

The lens should be considered a key component of an optical device called a camera. That’s right: not a matrix, but a lens. A photograph is an image, and nothing more than a photographic lens forms this image on a photosensitive material. The matrix only converts the image created by the lens into digital form.

A photographer does not have to be an expert in the field of applied optics, but having some idea of ​​how the lens of your camera works will not only not interfere with your creative growth, but will also help make photography more conscious and manageable.

Lens design

The main objective of a photographic lens – to collect the light coming from the scene, and focus it on the Continue reading

Lens aberration

Aberration of a photographic lens is the last thing a novice photographer should think about. They absolutely do not affect the artistic value of your photos, and their impact on the technical quality of images is negligible. Nevertheless, if you do not know what to take your time, reading this article will help you understand the variety of optical aberrations and methods of dealing with them, which, of course, is invaluable for real photo-erudite.

Aberrations of the optical system (in our case, the photographic lens) is the imperfection of the image, Continue reading

Shine
Light is the heart of photography. The camera does not see the image. For him, there are no lines, no shapes, no textures. A film or digital sensor is susceptible…

...

Man and camera see the world differently
Often a scene that looked attractive to our eyes appears completely unpresentable in the photo - with a whitish, illuminated sky, with black dips in the place of shadows, with…

...

Scatter Circle Size
A scatter spot (circle) is a distorted image of a point projected by a photographic lens onto the camera’s matrix or film. These distortions are caused, firstly, by structural factors,…

...

White balance
White balance is an important tool for managing the color palette of a photograph. One of the advantages of a living person over a digital camera is that a person…

...