319ideas

Cyberstalking - what to do?

2011-08-17T07:16:00.000-07:00

Above all, keep all emails and messages - this is a necessary proof, if you choose to report the matter to the police. Do not react. Do not reply to messages even if you are very nervous. Your reaction to persecutors will encourage them to maintain contact with you. It does not matter what you write - it is important that you write at all. More information: cyberstalking - next steps.

Autofocus tracking

2011-05-11T00:10:00.000-07:00

Autofocus tracking, tracking it in English autofocus, autofocus and provides a predictiveautofocus. The action of this type of focus in the model Canon EOS-1D Mark IV is a verycomplicated description can be postudiować in this document called the White Paper,of course, English. In our FOTOPORADNIKU let us quote a simplified description of how such a system. That track is a continuous course focusing on a moving object, which is approaching ormoving away from the lens. The points can describe it anyway.

- Camera control program forograficznym "fishes out from the frame a distinctive objectwhich" nacelowaliśmy "our camera. Let this object changes the distance from the camera, which is approaching or moving away from us.
- The program sets the lens so that the image of the object was sharp. This takes about 1 / 100 sec lens settings are stored.
- After a short time as possible (say, 0.05 s) the program re-focusing. The new settingsare stored lens too. The program compares both the lens settings and their values are determined direction of movement of the object and its speed to the camera.
- Press the shutter button to take a picture. The program knows the time of pressing theshutter button until it opened and already knowing the speed and direction of thephotographed object, the program sets the lens so that the image of the object when theshutter speed was sharp.

Multi-point AF

2011-05-04T00:09:00.000-07:00

Image produced by the lens is projected, through the arrangement of mirrors, an additional sensor (or several dies) dedicated to focusing. On this matrix are separate areas are arranged so as to cover the entire frame "seen" to postpone the lens.Depending on the sophistication of a digital camera model, these areas can be from several to several dozen. Canon EOS-1D Mark IV is the 45 Each of these areas, popularly known as the point, though this is an area of specific dimensions, serves to focus on him for a portion of the projected image.Focusing is based on such a draw position of the moving lens in the lens to get the greatest contrast. In contrast, a simple apparatus is selected relative vertical edges visible in the frame. Hence, known fault CDs that can not set the focus to the boat on the water, where lines of different areas of the frame are horizontal contrast. In the case of the EOS-1D Mark IV, but many other SLR cameras and the contrast is determined by the vertical and horizontal lines. Called a "cross" area. Of the 45 areas the designation field 39 is a cross areas. Focus is on
capturing an image incident on a point (area) measurementsetting the contrast for the image, which is part of the whole frame projected on the main matrixadjustment of moving lens elementsdetermine whether the contrast has improved or deterioratedwhere the contrast has improved, rules, setting the lens is repeated in the same directionif the contrast worsened, adjust the lens is "the opposite" direction.this method, step by step, we select the greatest contrast, namely setting the lens gives the best focus for the objects seen in the measuring area.Such wyzaczenie focus requires intensive computation and high-speed transfers of lenses in the lens. Calculation of designating a separate processor performs the focus, in case of the EOS-1D Mark IV is 40 MHz, 32-bit RISC on the structure. These calculations are spomagane by the main camera processor - 40 MHz, 32-bit RISC too.

2011-04-27T00:07:00.000-07:00

Describing the role of the pentaprism in the DSLR mentioned a total internal reflection of light. We explain this phenomenon accessibly as possible. Let shown here is a cross sectional drawing of an aquarium filled with water. From the bottom of the aquariumthrow a beam of light toward the surface. The direction of the beam determines the angle between the normal (perpendicular) to the water surface and the radius. This angle is called the angle of incidence at the border facilities (water and air).

For small angles of incidence, such as the angle marked in blue, light comes out of thewater and continues through the air.
For a certain angle, called for the border (marked in red), the beam will not go out of the water and "slides" over the surface,
For angles of incidence greater than the critical angle the light reflected from the surface of the water and returns to it. Reflection is completely lossless, ie there is no loss of energy. Hence the name of total internal reflection

This phenomenon occurs whenever the light goes from the center of the denser (with higher refractive index) to the rarer and therefore such

- from water to air

- glass into the air

The phenomenon of internal reflection całkowitegoo is the basis for the construction of fiber optics. In a thin rod of glass or transparent plastic light can travel without any loss of energy very long distance, bouncing off the walls in succession from the bar.

2011-04-20T00:06:00.000-07:00

In each SLR, a camera with interchangeable lenses and a mirror directing light rays to the optical viewfinder, there is a pentagonal prism. The prism is used to direct light raysreflected from the mirror to the eye of the photographer. Schematic of light rays in theSLR, is shown in the accompanying drawings.

Structure and elements of an SLR

2011-04-13T00:01:00.000-07:00

The SLR camera with a specific structure, so it will devote a separate chapter. Canon has released a document describing very precisely DSLR EOS-1D Mark IV. This is a pdf document larger than 7 MB, so when the first download should be saved to disk for looking into it does not require multiple downloads from the network. This is called the white paper, this term means an official document that explains very accurately describing a problem or a product. In other words, this is a very accurate description of the parameters and rules of operation of the camera. The document has 123 pages and contains many photos, diagrams and charts explaining the operation of the different elements of this camera. Since the Canon EOS-1D Mark IV is currently one of the most advanced models of digital photography apartów SLR class, we use the information contained in this "White Paper" for explanations of the workings of many elements of this type of camera. The best solution is studying the original document, but it is in English and not everyone can handle and understand some subtleties of language. We will not explain it dokmentu, because you must have permission from the copyright holder and only on the basis of the principles we describe the basic elements of an advanced SLR, popularly called as cameras with interchangeable lenses and a movable mirror directing the image from the lens to the viewfinder. Studying the various paragraphs of this chapter should have opened the original document that you can quickly look at the drawing, or diagram illustrating the described problem.

How does a three-dimensional display work?

2011-03-31T16:42:00.000-07:00

Built-in screen works in a similar way as already known in the nineteenth centuryfotoplastykony. Each eye receives slightly shifted image that the brain is connected to athree-dimensional object. The problem was, however, the separation of the two versions of a photo or video. Applied to the sets of lenses, or two-color or polarized glasses. All solutions have the same drawback: the use of additional equipment required for viewingthree-dimensional images.

The three-dimensional camera for photography presented by Fujifilm is not necessary.The display is designed so that if you look in front of him, the two eyes may be routeddifferently image. The same works for digital photo frame, you can buy the kit. There is also provided to enjoy the 3D image viewing photos at the right angle and fixeddistance.

3d photography

2011-03-26T16:42:00.000-07:00

Three-dimensional movies are doing a stunning career. Cameras to enable them tospin, however, are expensive. On the market there are cameras, while performing three-dimensional photographs. At the moment only available for the average model isKowalski Fujifilm FinePix Real 3D, but if the experiment succeeds, it certainly will goafter them other manufacturers.

Principle shooting is simple and has been known since 160 years. It mimics the way weperceive the world. The 3D camera has two lenses, which carry pictures at slightlydifferent angles. Just as the human eye. An image of each lens is cast in a separatematrix. Then both images are processed by the camera and stored on a memory card.Shooting is done so as in a normal digital camera, as long as you have become accustomed to a very natural way of holding the camera in such a way that does notobscure any of the lenses.

The same could have been done before, but this involved the performance of the twoimages into a series of carefully mounting angles and a computer. Execution of twoimages at the same time also allows you to capture moving objects.

There is more good news: for viewing images you do not need special glasses, at leastnot always. Can be seen on the screen of the camera or stand-alone display, on a typical monitor (with glasses), and soon even on ... printed prints!

Not about photography, but interesting news:)

2011-03-21T16:39:00.000-07:00

Board of Directors of ICANN, which is the institution responsible for the granting ofdomain names, voted on Friday for running a domain. xxx, a long-awaited end, whichwould be characteristic of the pornographic. The decision was taken by a majority of 9: 3, and 4 Council members abstained. The turnaround in policy by ICANN may be so controversial that the first time the Councilhas acted contrary to the recommendation of the Governmental Advisory Committee(GAC), which issues opinions on draft decisions. Contrary to appearances, theadoption of the new domain is not telling the whole of the sex industry - some have already invested a lot of sites on this subject in the previously existing domains

Some tricks

2011-03-17T01:13:00.000-07:00

Lighting plan was not too complicated, but it is not simple. Due to the need for a shorttime I did not flash the full freedom of power regulation. In which case it can be done? I will not say anything new, if you mention that the amount of light is mostly dependent onthe distance that must be overcome. Usually the larger the distance, it is weaker. Of course, sometimes the reverse is also focused beam, but the lighting of this type at thissession not been using, so for now I'll put this topic. If you do not have lamps with a wide range of adjustment, you can successfully exploit this principle. Another method is to use gray filters. I am thinking of films that are produced in several luminosities by companies such as Rosco and Cotech. Do not forget the savings - no need to buy a full range of filters, a lot is better to also buy them in the roll than in sheets.This allows us to put them before the lamp twice or more times complex.

Flash

2011-03-14T01:11:00.000-07:00

Only in rare cases, extremely short exposure time is important and that's when you shoota bottle was needed. For lovers of low-cost solutions, unfortunately this is not goodnews. Simple studio lights do not flash time adjustment, and indeed even the more advanced very rarely have this option. I use hardware broncolor Swiss company, whichin the top models of generators provides a degree of control of this parameter. Eventhough the shortest time, I achieve only the lowest powers the flash.

Photographing water in motion

2011-03-11T01:10:00.000-08:00

To perform almost every person needs professional tools. Occupation photographer is no exception, but not enough in the studio camera, flash, several tripods and computer.We will need more tools and accessories to be used in a variety of specialties. There must be a professional course, large machines such as computer-controlled milling machine, although this would probably be useful sometimes. Every photographer, depending on the course should complete their own set, which should not be missing tapes, veins, plasticine, scissors, pliers, etc., etc. - could be exchanged for a long time.Are also very helpful for multiple mounting accessories manufactured by companies such as Manfrotto or Foba, but without them it can be to deal with.

I have never concealed that the pictures I make are the result of combining photography with computer processing. I mention this because already at work in the studio we have to think about editing later. For this reason, the implementation of the photographic material for this work was divided into several parts. Is good practice to draw the everything before the session to clarify the expected results and consider what steps to divide the work. Drawing does not need to be beautiful, but should include all the elements to be included in the frame.

First of all - a glass with ice cubes and mint. Its preparation took a long time, even though the peppermint dough was stuck to the bottom so as not to be inferred, and the bones were made of acrylic and the wicked do not leap to the surface. The same paste and position of everything in an attractive manner cost no small effort. If someone come to similar compositions without difficulty and is looking for work, willing to hire him in his studio as a stylist. To facilitate your work, after setting the frame and focus was to determine the necessary background to where the glasses. This allowed it to be discontinued in exactly the same point, whenever there was a need to. After each set, ice and mint zalewaliśmy gently mix them lightly carbonated, so as not to disturb the composition of the glass.

Depth of Field

2011-03-09T03:14:00.000-08:00

The depth of field (DOF) is a parameter used in optics andphotography to define the scope within which the objects observed by the optical devicegives the impression of acute (ie, with clear, nierozmazane contours).
The large depth of focus provides the focus of most elements in the picture, but littledepth of field (the precise focus at the subject item and blurred background) is sometimes highly desirable for portraits and art, because the subject is isolated against the background of the environment.

Immediately, the extent of depth of field are the following factors:
- aperture - the smaller the aperture is left (ie: the higher the aperture, eg, 16 or 22), thegreater the depth;
- the distance at which it is set to focus the lens (the distance between the object and the camera) - the distance is less, the depth of field as well.
- focal lenght

Indirectly, the extent of depth of field is affected:
- resolution and the size of the sensor / film

HDR photography

2011-03-06T03:12:00.000-08:00

High dynamic range - a technique in photography involving the execution of several exposures of the same frame, some of which are underexposed, overexposed and the remainder. It allows you to obtain a picture of the scene is characterized by a large tonal range.
Using this technique, usually done three to five photographs (sometimes more - depending on the tonal range and dynamics of the camera frame) with a properly illuminated shadows and indirect light elements, such as the difference between 2 EV (can be 1 or even 3), then combines the images into one file. In order to obtain the source photography, the method bracketing or produces a RAW file with different parameters.
HDR composite image is subjected to the mapping of luminance, so that compression is a global contrast of the image, but are observed local changes in brightness. This technique can also be used to improve the quality of individual photographs, and noise, which in this case usually is enhanced, can be removed using a bilateral filter.
For the first time this technique was used in 1857 by Gustave Le Gray, on the one hand trying to photograph both the sea and the sky, although it exceeded the technical capabilities of contemporary cameras and films. Le Gray solved the problem by doing two separate images with different exposure time, and then used the different parts of the negatives to obtain a positive.

Chromatic aberration

2011-03-03T03:10:00.000-08:00

Chromatic aberration is a feature of the optical lens or to the differentfocusing distances (due to the different values of refractive index) for the differentspectral colors of light (different wavelengths of light). The result is a splitting of the lightthat is visible at the borders of contrasting areas in the form of color borders. Chromatic aberration is also present in the human eye lens, causing the coloredborders (orange and blue) around dark objects against a light background. In the caseof optical systems (telescopes, photographic lenses, etc.) is a defect in the deteriorating quality of reproduction. This phenomenon is also known in the black and white photography. There are nowhat's true colors, but the chromatic aberration causes blurring of the image. Correctioncan be achieved by apochromat or by use of an appropriate color filter with a narrowband of bandwidth or by the individual channels to convert color to black and whitechannel. Some of these methods require, however, increase the exposure time.

Pictorialism

2011-02-17T11:47:00.000-08:00

Pictorialism is a trend in artistic photography which was developed before 1890 in England. It is based on the individual artist's interference in each print made by him, namely the break with the mechanical positive process. Instead of recording a photographic snapshot, a synthetic work of art is created. In photography, the artist uses fine art techniques such as: rubber, oil, and embossing. Photographs often resemble a pictorial image, drawing or graphic.

The Labyrinth of Looks. Documentary Photography in Latin America

2011-02-09T03:35:00.000-08:00

An exhibition and publishing project of the Spanish Agency for International Development Cooperation, AECI, and Catalunya America House, which now joins theMinistry of Culture presented for the first time in Spain.

According exitmail account, the project consists of three exhibitions that have traveledfor nearly three years for 18 countries in Latin by the hand of the Network of CulturalCenters of Spain AECI, presenting differing viewpoints of authors working in the documentary field in Latin America, Spain and Portugal, committed to issues of socialcontent.

Available until 15 May in the Old Building Tabacalera in c / Embajadores, 53, Madrid.

Picture of a ghost?

2011-02-03T05:50:00.000-08:00

Photo taken by the user, the mobile phone. - Only when viewing photos on your computer, I noticed that there is a figure of a girl, whom nobody has seen - says Internet surfer.

Wedding Photography

2011-01-31T02:09:00.000-08:00

The most important thing for me as a photographer is to be as close as possible events.Do not interfere in their course, I'm an observer, which stops those fleeting moments in a long time afterwards, when the pass. For me, each wedding has its own unique atmosphere, which is composed primarily ofthe main characters, but also a place where the ceremony itself takes place. I try to make my photographs reflects the unique climate.

Slide

2011-01-27T02:41:00.000-08:00

Slide is a positive image obtained directly on the film negative format. Characterized by high quality reproduction of reality and a very high color saturation. Prior to the digital recording technology, the reality was the main carrier of the image used for printing. Significantly surpassed its negative quality materials. Slides are still used as the primary medium of communication such as diaporamie.
Currently, the importance of expanded use of computer techniques in data communications, in modern graphic presentation as a basic element of presentation and computer animation including flash technology. It is equivalent to a single frame in the movie.
The presentation consists of a sequence of slides containing text, images, lists of questions, diagrams and charts, audio and video. Is displayed on the screen by the time defined previously by the author of the show, or, depending on their immediate needs (manual change slide). A slide shown during the "live" show is the basis of the verbal commentary of the speaker, which extends the issues outlined in the slide.
In some environments (eg, academics) was determined by that date and a special film on which the various elements drawn in, and then displays them on screen using epidiascope diaskopu or as an aid in the presentation of the topic.

Princess, a band from Sweden

2011-01-26T02:16:00.001-08:00

A friend from Sewedn has this friend of a friend who is in an cool rock band from Gotheburg. They are called Princess. I listened to them on Myspace, and they are pretty cool! I'm going to Sweden this summer (hopfully!) so there is a chance I'll visit Gotheburg and listen to them live.

Facebook pages dedicated to photography

2011-01-18T15:04:00.000-08:00

I'm a member of many Facebook pages and most of them are about art and mainly photography. I was curious which ones do best in Sweden were I'm currently living. There are many Facebook page rankings, but for Sweden I found this one to be most reliable: fbrankingse.com. I would say I was eepecting more photography pages to be there, but still it's not too bad. I think most of them are on the French Facebook page ranking, because of Henri Cartier Bresson, Eduard Boubat and all the humanist photographers.fbrankingfr.com

Andre Kertesz retrospective exhibition

2011-01-13T09:03:00.000-08:00

This exhibition is a unique trip through the life of Andre Kertesz. It is also an interesting aspect of the artist, who at age 80 was not afraid to reach for an entirely new technique of photography (Polaroid). I will cite here another quote, which may be another key to his work - "I consider myself an amateur and I hope that I will be so treated until my death. I'm a permanent student of discovering the world countless times."

The exhibition is open until 6 February, but fortunately at it does not stop in Paris. From 26 February to 15 May it will be seen in Zurich (Fotomuseum Winterthur), from 11 June to 11 September in Berlin (Martin-Gropius-Bau) and finally from 30 September to 31 December in Budapest (Hungarian National Museum).

Marian Schmidt

2011-01-10T08:49:00.001-08:00

Marian Schmidt (b. 1945) is a Polish photographer and a founder of humanistic photography renewal in Poland. Considered by many - next Henri Cartier-Bresson as a master of image composition. He believes that the photographer's mood is crucial and to take better pictures, you need to work on your personality, be focused, attentive, and in a stress-free state.He recommends meditation.

Born in Zyrardow, his parents immigrated to Caracas in Venezuela when he was 1 year old. He graduated from mathematics (PhD) in the United States at Brandeis University, where he was friends with John Nash (famous from the movie "A Beautiful Mind"), studied the phenomenology of music with the conductor Sergiu Celibidache. He is fascinated by the spiritual life. As he says, the biggest influence on his life exerted Jiddu Krishnamurti and Hermann Hesse.

He has over fifty prestigious photographic exhibitions in New York, Paris, London, Tokyo, Zurich, Warsaw, Krakow, Gdansk, Poznan, Szczecin, and in his home town of Zyrardow.

He lived in the U.S., France and now lives in Poland. He is a lecturer and the director of the Warsaw School of Photography and a member of Raphoe photographic agency in Paris. He also taught at the Department of Photography at the Academy of Fine Arts in Poznan and Lodz Film School, where in 2002 he obtained his habilitation dissertation in the discipline of artistic photography.

Eduard Boubat

2011-01-01T17:02:00.000-08:00

Eduard Boubat is one of the most influential French photographers of the twentieth century. Boubat creates an elegant and poetic images in its expression, depicting the daily life of Paris close to the world and from his trips to Africa, India, Spain, Portugal, Brazil and China.

Willy Ronis

2010-12-26T09:02:00.000-08:00

Willy Ronis spent decades photographing the daily life of the Parisians. The pictures often uses subtle humor and are full of warmth and affection. He was interested primarily lives of ordinary people.
Willy Ronis loved to wander aimlessly through the streets with his camera in hand. In the early 50s wandered to the area of Belleville-Menilmontant were immigrants from Eastern Europe and Russia lived. This district - a separate realm in the city - fascinated the artist, becoming a spiritual home for him. In 1954 he released an album, Belleville-Menilmontant, which eas a great success.

Ronis also had a great passion for the river Seine. He immortalized the bridges, barges, boats, without forgetting those who were in the vicinity. It seems that his pictures can not exist without human presence. An example might be one of the most recognizable photographs of Ronis - a barge with children, Paris from January 1959.

The artist was fascinated by the unpredictability of life. His work appealed to the view Cartier-Bresson contained in the book "Decisive Moment" (L'instant décisif). Important elements of his work were the form and composition. Ronis is often places together with such photographers as Henri Cartier-Bresson, Robert Doisneau, Eduard Boubat, Andre Kertesz, and Isis. All are representatives of humanistic photography, which is characterized by a specific approach to the average person - it is curiosity and tenderness.

Henri Cartier-Bresson

2010-12-23T11:29:00.000-08:00

Cartier-bresson photographed mainly with his Leica rangefinder camera. He is considered the father of photojournalism. Cartier-Bresson used mainly standard focal length of 50 mm. Bresson pictures appeared in the most popular magazines of three decades and has exhibited in all major galleries in the United States and Europe. The exhibition "The Decisive Moment" was the first photographic exhibition, which went to the Louvre.

He studied painting in the studio of Andre Coteneta Lhote and graduated from painting and philosophy at the University of Cambridge.The took his first photographs in 1931. His first exhibition was held in 1932 in New York's Julien Levy Gallery. Then the photographs were rated very favorably. In the 30s Cartier-Bresson participated, among others in the famous ethnographic expedition to Mexico, after which he began working as a freelance photographer. In 1935, from Paul Strand's learned to work with the camera. Then he assisted in the films of Jean Renoir. In 1937, the documentary filmed in Spain, in 1940, he was a prisoner of war camps in the German state of Baden-Wuerttemberg.

After escaping from the camp in 1943 he joined the French Resistance. After 1945, was again an independent photographer. He was able to use one of the biggest advantages of photography: the ability to capture a particular moment. According to Cartier-Bresson's not just about any moment, but the decisive moment ( L'instant décisif), which expresses the essence of the moment.

Cartier-Bresson worked for almost all major newspapers and magazines around the world. He was a co-founder of the famous photo agency Magnum with Robert Capa, David "Chim" Seymour and George Rodger. This took place in 1947 in Paris.

He travels to India, Burma, Pakistan, China, Indonesia, Cuba, Mexico, Canada, Japan and the Soviet Union. In 1982 he was honored with the Foundation Erna and Victor Hasselblad award for lifetime achievement.

Developed by the concept of decisive moment, very influenced the development of modern reportage.

At the end of his life has not had photographs, but he returned to his old passion for drawing and painting. He died at the age of 95 years in the village of Isle-sur-la-Sourge near Marseille.