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Technical study of high dynamic range Photograph Abstract When the digital technology in the field of imaging photography and his world, people thought it will be interested to photographer and Sciences that this technique is just replacing raw film traditional ones with Electronic.

At the beginning the digital photographic image had a lower quality than the traditional film, but the acceleration in the evolution of digital technologies photographic image and graphic processors, as well as offering the imaging process technologies themselves create a new situation of integrating artistic vision and technical innovation.

The digital imaging technologies opened up many before photographers, and allowed them a great ability to control the tones recorded image, as well as the ability to control the highlight fine details in each part of the image, rather than made available conventional techniques of film, and chemical treatments for these raw materials, The most important of these techniques are known idiomatically high dynamic extent of the photographic image, which is the subject of this research.

Through the above, we can say that the search problem is in the questions: - What are the scientific and technical basis for produce photographic images with high dynamic range?

- What are the methods of control in high dynamic range photograph?

The research aims to clarify the methods to obtain the long high dynamic image photographic, and how to control the amount of the fine details resulting image photographic despite the different regions of lighting topics, so that the photographer can by these digital technologies highlight aesthetic values they wish to achieve, and according to his artistic vision and his abilities Creative.

To do this discussion dealt with the definition of high dynamic range technology image photographic and the emergence of producing images

with high dynamic range and its evolution, and then a review of the programs produce images with high dynamic range HDR software: ( program Photomatrix, Photoshop Element , Photoshop).

After that, the researcher introduced requirements of produce images Dynamic Range Higher, patterns capture shooting Modes, and image file formats used to work with dynamic High Photo file type, then accessories complementary used to get HDR good, and even explain properties to produce images used to integrate the image of high dynamic range , And then modes generated images with high dynamic range using Photoshop.

Then the researcher do two applications to produce the final image with a high dynamic range, one of the Tahrir Square and the other in the same day of the National Democratic building burning The results were: After completion of the study results can be formulated in the following points: 1 - The production of photographic high dynamic range based on the consolidation of a number of images graded exposures to a single topic through computer programs.

2 - Dynamic Range image is measured as the difference between the top of the lighting area and the top of the cataracts show them the exact details of these two regions. And measure the contrast between them (gamma) is a standard measurement dynamic range of the image.

3 - is controlled to show the details of each area through a special dialogue window Photoshop program, where they can select some exposed images, the exclusion of other exposures images in accordance with the vision of photographer.

4 - traditional methods as a region can not produce images with high dynamic range, such as those built graduated expousres.

5 - still produce images with high dynamic range using cameras equipped with this property are less able to control this term, and does not grant the ability to select specific parts of the image and control the degree of clarity and fine detail.

- Also appeared Research Recommendations: Recommendations of the research can be identified the following points: 1 - photographers must proficiency in the use of techniques for producing images with high dynamic range through proficiency programs use graphics processors.

2 - You must pay attention to technology produce images with high dynamic range in the various fields of employment for photographic images, whether scientific or technical or press. To other areas of employment is what can you add this technique of functional efficiency of the image.

3 - A public educational institutions and Department photography and Film and Television Faculty of Applied Arts, Helwan University, the addition of graphic pictures photographic processors into their curricula to the importance of these techniques for photographer in our time.