Petrosani Hobby Magazine - no13 - 2007

Petrosani Hobby Magazine - no. 13 - 2007 - How do we take a good picture?

Reading time: 4 minute

Author: Petrosani Children's Club
Quarterly magazine of the circle of electronic constructions and amateur radio
Coordinator: Prof. Kovacs Imre - YO2LTF

Did you know that ...? The first photo that shows a scene from the real world is called "View from the window of Le Gras"?

This was done in 1827 by the French inventor Nicephore Niepce (1765-1833). The picture was taken by calotype (an old photography process in which silver chloride was used as a sensitizer and sodium chloride or potassium iodide for fixation) and was taken in June or July 1827.

The structure of the magazine

1. Advocacy for education

The current civilization, in its tendency to be more and more visual, imposes a plastic artistic education with practical-formative values, an education that dynamizes the creative psychic processes, par excellence, individual. Artistic values ​​have a great educational force in all aspects.

Some researches of art psychology draw attention to the fact that the influence of the authentic artistic environment is decisive precisely at preschool and school ages. Every child is a training personality.

The school and the children's club (in the visual arts circles) can transform each individuality into a harmoniously developed personality only by teaching the child all four fundamental human languages ​​(verbal, mathematical, work and art). Only through the study and priority use - practice of these languages, everyone will be able to overcome the condition of a good performer, so that, becoming creative, he can regain his human essence as a free man…

2. Help in case of insomnia (electronic assembly)

Millions of sleeping pills are consumed in Europe every night. A good part of this medication would probably be superfluous if the people in question managed to relax enough.

An essential condition for this relaxation is a quiet environment, which in the modern world is increasingly rare. Japanese researchers have found that the noise produced by rain also has a relaxing effect. With the assembly presented in the article an imitation of the noise produced by the rain can be made.

3. Rain alarm (electronic installation)

Especially in the summer months, it is really useful a rain detector. It often happens that a downpour is noticed late, so that the clothes lying on the rope or garden furniture are watered.

The assembly presented can help to avoid these inconveniences. It uses the property of rainwater to have a fairly high conductivity to electricity. The "compact sensor" provided to be connected to contacts A and B serves as a rain indicator. The sensor is located on the board designed for this mounting but, eventually, it can also be mounted separately…

4. About connectors

In everyday practice the amateur radio or electronics enthusiasts generally face different connectors from different electronic devices. Usually the incoming or outgoing signals are standardized and their knowledge is a real help.

The following types of connectors are presented:

  • DIN Audio;
  • NeoGeo Audio / Video;
  • 3.5mm Mono Tele;
  • 3.5mm Stereo Tele;
  • 6.25mm Mono Tele;

5. Digital photography

What is digital art?

The term digital art is reserved exclusively for art created or modified through a computerized process.

The term digital illustration usually refers to art made directly in vector graphics programs, such as Adobe Illustrator, that is, images drawn with the help of a mouse or graphics tablet.

3D graphics are the result of creating geometric shapes, polygons or curves, of complex images that render realistically - three-dimensionally - shapes, objects or scenes. 3D images are made exclusively with the help of specialized programs, for example Cinema 4D, 3D Max or Maya.

Digital art can also have external sources, such as photos or scanned drawings. Digital photography is also widely used in the creative process. The popularity and widespread availability of photo manipulation (processing) programs, such as Adobe Photoshop, has given rise to a vast and innovative database of modified images, many of which retain only vague clues about the original photograph…

6. Money from digital photography

Technological advancement has made it possible for many people to access professional cameras that allow them to take stock photos. On the other hand, the development of the Internet, the increase in the number of websites and online multimedia technologies, have led to the increased need for images to be processed in web graphics. The application of images for the web is characterized by the fact that the requirements related to image size (dpi) may be smaller than those in advertising graphics.

As a result, more and more types of digital cameras qualify and allow you to approach the realization of such a profession / business.

Some tips for taking successful photos:

a) If you opt for a digital camera, before buying a digital camera (digital camera) make sure that - the quality (number of megapixels, optical zoom, etc.) allows you to take images according to website requirements. where you intend to display the images (photos) for sale;

b) Many digital image sales websites allow you to view the number of images that have been downloaded, by photography themes and subjects. This way you can focus on a profitable photography subject that is required. Usually the field of business is the most sought after;

c) When you think you have a good idea about a subject to photograph, photograph that subject in several poses and angles, thus increasing the chances that your photos will be what buyers are looking for. In many cases this is a possibility to sell that subject both with a multiple license (payment per number of downloads) and with a single license to use;

d) Create an online portfolio of photos to help you in the future in your presentation to companies that sell photos;

e) Find out about digital photography techniques from existing books and online tutorials. Many websites that sell digital photos allow you to manipulate your photos using a graphics program before sending them.

7. Curiosities

  • About snoring
  • About new teeth
  • About Spain


If you want to collaborate with this magazine, please access the contact section on the last page of each publication.

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