entranceThe automatic camera produces bitmaps of 800x600. Control workouts
- an inexpensive camera with a good increasing effect. One of the popular models in consumers. 1 - harmonious compliance between the price and properties; 2 - better pictures due to reinforced luminosity. Electronic image stabilization;
3 - Compact Camera with Touch Display.
In the period when digital cameras only began to appear on the market, the determining value was the number of megapixels. It spoke about picture quality. Now the technical capabilities of the equipment expanded, and the volume of the matrix is \u200b\u200bnot the main quality for the camera.
A variety of digital cameras allows you to select an instance according to different parameters - in size, the volume of the functional and so on. The smaller the size of the camera, the more modest will be the possibilities of optics and a battery. Buyers choose models of different classes for their needs. It must be borne in mind that the higher the cost of the device, the higher its possibility. Manufacturers respond to consumer requests. They produce cameras for filming underwater landscapes, for home photography and travel. Taking with me to campaign the camera, it is important that she does not occupy a lot of space, was mild and made high-quality pictures in all weather conditions. Modern digital devices replace bulky mirror counterparts.
To choose best model According to its requirements, the buyer needs to know the features of each instance. After all, even the famous brands have more and less successful digital.
Good cameras at democratic prices
Small chambers are designed for amateur shooting. It is understandable to use, it is convenient to take on a journey, and for a holiday. They have sufficient opportunities for non-professional shooting. Sound quality, braking autofocus - minor disadvantages of these cameras.
Evaluation (2018):4.6
Benefits: The highest quality zoom optics
Producing country: Japan
The device was released in production in 2015 and has leadership in the quality of optical zoom. Extended focus features make it possible to shoot in the room and on the street with the same success. Pretty high-quality frames for amateur devices can be obtained in day and night.
For non-professional reporters, it is important that the settings are simply installed, and better, automatically. Buttons for settings are located on the housing. This model is similar to the form of old mirror cameras, it is convenient to keep it in your hands while shooting due to rubber non-slip tabs. For transportation, a special case is needed.
For good clear frames during shooting, the image is well stabilized and focused. The camera clearly removes static objects at close range. For fast moving figures, it is not quite suitable. Shot speed - 1 frame in 2 seconds. For sports reports, this technique will not fit.
Evaluation (2018):4.9
Benefits: High characteristics for shooting speed at a small price
Producing country: Japan
This model has been steadily on the market for many years. She is the winner according to consumers. Steel stylish housing protects the machine from mechanical shocks and scratches. Special coating protects against stains. High light sensitivity depends on open to F2.7 diaphragm.
Video filming is conducted in Full HD mode, it gives a high-quality fast frame and a clear image of moving objects.
This model is not intended for professional shooting, there are no manual diaphragm settings and excerpts. For the photographer, it is enough for elementary knowledge and skills in the photograph. The negative point in the characteristics of this technique is the insufficient quality of photos with automatic shooting. Automation can not balance autofocus and white color. But it does not prevent the model to keep the leading position in the line budget cameras For 5 years.
Good inexpensive high quality cameras
Evaluation (2018):4.5
Benefits: Advanced viewfinder combined autofocus
Producing country: China
Small dimensions make the device similar to ordinary soaps. But the set of functions and their quality is much higher than that of the first digurities. He does not fit in a small handbag, has a pretty convex lens. By the management method, it looks more like a film chamber. There is a manual image setup button. From ordinary analogs, it is distinguished by the method of inclusion. To do this, turn the lens ring. It is not completely removed into the camera body in a non-working position.
Automatically white color is not installed - illuminated images are possible. During the shooting, uncharacteristic noise interference appears. The camera sensitively reacts to the light - it can be removed in the semit of poorly lit rooms and on the street at the late hour. Frames will be clear. Extended capabilities provide amplitude of focal lengths from 28 to 112 mm.
The device is available at the price of its capabilities. He is popular with buyers. Good quality Video filming is provided by high speed - 12 frames per second. Lots of additional features Perform a bonus to the basic characteristics of this model.
Evaluation (2018):4.9
Benefits: Balance of value and qualitative characteristics
Producing country: Japan
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The Japanese camera leads in its class, despite the high price. Small in size, the apparatus accommodates truly Japanese quality and scope of functions. Durable stylish housing comfortably falls into the hand when working with it. The lens is a bit over the boundaries of the case.
You can conduct universal shooting without a complex setting. This camera can also work indoors and outdoors. You can shoot in any weather and time of day. This is one of the main advantages of the model. It has good photosensitivity. ISO provides a working status to 1600. Guidance and configuration of the focus - automatic. There is a RAW format.
To align the balance of light and shadow, the swivel flash is directed up. Other features - Turning screen, hot shoe, Wi-Fi
The quality of the pictures for the "pocket" digital is excellent. Big set Settings, including automatic, makes this model in demand even from professionals. Therefore, it occupies a leading line in its class.
Leaders in the class of enhanced digital cameras
Advanced devices buy experienced lovers who know the photographs and professional photographers. The compact and light camera does not take up a lot of space in the traveler's luggage, but allows you to capture all the brightest of what seen in the best form.
These models are located on the upper step of the evolution of such equipment, they give a high-quality image due to the possibility of using automation and manual settings, improved optics. Crop - factor brings the image quality to 35 - millimeter film
Evaluation (2018):4.6
Benefits: One of the most sought-after cameras of its level
Producing country: Japan
The Japanese chamber has a fairly high price, which is justified by the high functionality of the device. Began to produce this model in 2014. She is acquired by amateurs and photographers for whom the quality of the pictures is of great importance.
A wide aperture makes it possible to work without an outbreak in a good light. With bright light, a sample gray filter is triggered. With a fivefold optical zoom, you can conduct a macro shot.
Video filming can be conducted in Full HD mode. There are mobile touch screen, Wi-Fi, autofocus.
Of the negative sides, it is necessary to note the absence of the viewfinder. It will have to acquire additionally.
Evaluation (2018):4.8
Benefits: Optimum cost. The highest quality video shooting
Producing country: Japan
The second place in popularity in its class by consumers is given by the Panasonic Lumix DMC-LX 100 models. This is the smallest device, but all achievements are concentrated in it. modern technologies For this technique. This is a high-class functional camera.
They use professional photographers instead of mirror instruments. A distinctive feature is a manual setting of all basic functions. This is an important property of techniques for experts and professionals. All systems are configured on the model housing.
The model combines the properties of a good camcorder and a camera. It can be done videos and good pictures for your archive or working materials.
Evaluation (2018):4.9
Benefits: The most qualitative shooting, optimal focus fixation
Producing country: Germany
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In a number of professional cameras, despite the transcendent price, Leica ranks first. There is an excuse for it. German video equipment is a sample of high technologies. This is actually the most advanced achievement in the field of video and cameras production.
Insprotable for competitors, this device makes the highest quality pictures. Its matrix for technical parameters is equivalent to a professional mirror apparatus. You can shoot highly from the closest distance.
But this "Sun" has stains - a fixed focal length cannot be changed by settings. We will have to come closer to the shooting object or, on the contrary, to retire from it. The reserve of own battery is small. But it can be reinforced with an additional battery.
The best cameras with ultrand
Digital cameras of this class cannot be miniature due to powerful optics. They appearance similar to slirms. Their main excellent feature is a strong increase in the object. Zoom properties allow you to shoot even crater volcanoes on the moon. They have the power of increasing as observatory telescopes.
In this case, the picture is not very clear, but impressive. This model can be used to shoot frames at a high distance. For example, in the natural reserve when observing animals in the wild.
Evaluation (2018):4.6
Benefits: Inexpensive camera with good increasing effect. One of the popular models in consumers
Producing country: Japan (assembly China and Thailand)
For powerful chamber by affordable price It is assigned one of the leading places in the lineup of cameras with ultrahlo. It has a zoom resource 50 times. A wide focus distorts the properties of the image, and the picture turns out a little blurred.
A powerful matrix (21 megapixel) competes in versatility with professional mirror vehicles.
The battery makes it possible to make 300 frames. It should be often charged, it is not very convenient, especially if the shooting is conducted in the field.
Evaluation (2018):4.7
Benefits: The most powerful photo substation is 83 times
Producing country: Japan
The camera has impressive size in width due to an outstanding optical system. This is the leading model by image zoom parameter. The Japanese are the best in creating optics for photography. They made an inaccessible to the increasing lens.
This technique can be used as both lovers of nature and scientists who remove the celestial bodies and moving in the sky.
Nature lovers can capture birds flying, remote objects to which it is impossible to get. When shooting this unit, they will be clearly shown in the photo. Astronomers - lovers can make a whole series of portraits of the moon and stars.
For a clearer image, the shooting speed is slowed down - 7 frames / sec. When working with remote objects, you will need to install the chamber to a fixed tripod.
The most clear pictures are obtained in a bright sunny day.
Digital cameras for photography under water with a hermetic case
The protection of moisture penetration into the apparatus plays a big role for those who love to relax from the water, to engage in skiing, shoot underwater world. The most advanced models can work at a depth of 15 meters. For such a shooting, additional lighting is necessary.
Evaluation (2018):4.6
Benefits: Compact Camera With Touch Display
Producing country: Japan (China assembly)
Protected by water The body protects the chamber from weather cataclysms. It is in demand among lovers of extreme types of recreation. This device easily placed in any pocket and is always at hand. Zoom - 5 times. This is one of the first models of moisture-resistant cameras. She gradually obsoletely, giving way to more perfect counterparts. Compared with them, the quality of the pictures leaves much to be desired. The photosensitivity is quite low - it allows you to shoot under water only at the surface in the bright time of the day.
Evaluation (2018):4.8
Benefits: High-quality shots due to reinforced luminosity. Electronic image stabilization
Producing country: Germany
The price of a full-frame mirror puts this model to the stage below the leader. The shooting quality is excellent, hermetic case protects the mechanism from harmful and wet environments.
In addition, there is protection against dirt, from shocks. The device can shoot with any weather and in any medium, including under water. The battery is designed for 1 hour of such a shot under water. A big advantage is high luminosity - the device makes high-quality pictures at dusk and under water. The closest distance for shooting is 20 cm. The ideal sharpness is achieved by a fixed focus.
Evaluation (2018):4.8
Benefits: Harmonious match between price and properties
Producing country: Indonesia
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The cost for many consumers is plays not a latter role. At the same time, everyone wants to have a multifunctional apparatus. Such a compromise is the model Nikon.
For recreation is a universal solution. Protected housing, small volumes and weight will enjoy extremes. This camera has a mass positive feedback Buyers. With a democratic price, it has all the characteristics of modern digital devices. It can even work in the cold.
. Information coding, volume and transmission of information: demo version of ege informatics 2019; State graduation exam 2019; Training options for information on computer science, thematic test tasks and tasks from computer science simulator 2019
✍ Solution:
- Recall the basic formula of the image of the image:
m, N - resolution (width and height in pixels)
i - color coding depth
Result:1024
9 Tasks EGE 2019 for training
Option number 3, 2019 (10 options), S.S. Wings, i.e. Churkin:
800 × 2800. 700 KB
What
Answer: 4.
Option number 4, Typical examinations 2019 (10 options), S.S. Wings, i.e. Churkin:
Automatic camera produces raster images in size 1000 × 1600. pixels. To coding the color of each pixel, the same amount of bits are used, pixel codes are written to the file one by one without intervals. The file with the image can not exceed 2100 KB Excluding the size of the file header.
What maximum number of colors Can I use in the palette?
Answer: 1024.
Option number 8, Typical examinations 2019 (10 options), S.S. Wings, i.e. Churkin:
What minimum memory (in KB) need to be reserved so that you can save any raster image size 1280 x 80 pixels provided that in the image can be used 64 different colors?
In response, write down only an integer, the unit of measurement is not necessary.
HAPPY 9 TASKS OF EGE 2018 on computer science and ICT from demolism. This is the task of the basic level of complexity. An approximate time of completion of the task is 5 minutes.
Checked content elements:
- the ability to determine the speed of information transmission at a given bandwidth Channel, memory required for storing sound and graphic information.
Task 9.
The automatic camera produces raster images of 640 × 480 pixels. In this case, the volume of the image file cannot exceed 320 KB, the data packaging is not performed. What is the maximum number of colors can be used in the palette?
Answer: ________
HAPPENING 9 TASKS EGE 2018 on computer science
The volume of the raster image is like a product of the number of pixels in the image on the amount of memory. i. needed to store the color of one pixel
In our case
640 · 480 · I ≤ 320 · 1024 · 8 BIT
i ≤ 320 · 1024 · 8 / (640 · 480),
as the bit can only be an integer, then we get
i \u003d 8. (Our task states that the scope of the image file cannot exceed 320 KB, therefore, we cannot round up! i. Round down to 8 bits!)
To do this, use the formula N \u003d 2 i
N \u003d 2 8 \u003d 256
So, in the image you can use no more 256 flowers.
. Information coding, volume and transmission of information: Demo version of the exam in computer science 2018; State graduation exam 2018; Training Options of the EGE on computer science, thematic test tasks and tasks from computer science simulator 2018
✍ Show Solution:
- By the formula of the image file, we have:
- Let's see that we are already given from the formula:
where N. - total number of pixels or permission, and i. - Depth of color coding (the number of bits allocated to 1 pixel)
number of colors \u003d 2 i
\\ [i \u003d \\ FRAC (I) (N) \u003d \\ FRAC (320 * 2 ^ (13)) (75 * 2 ^ (12)) \\ APPROX 8.5 bits \\]
Result: 256
State graduation exam of the HBE 2018 (Infi Infi Infi Infi Infi, Task 7):
Produced two-channel (stereo) digital sound recording. The signal value is fixed 48,000 times per second, to record each value used 32 bits. Recording lasts 5 minutesThe results are recorded in a file, data compression is not performed.
Which of the following values \u200b\u200bis closest to the size of the received file?
1) 14 MB
2) 28 MB
3) 55 MB
4) 110 MB
✍ Show Solution:
I \u003d β * ƒ * T * s
Result: 4
Solution 9 tasks of the EGE on computer science (diagnostic version of the examination work of 2018, S.S. Krylov, D.M. Ushakov):
Produced two-channel (stereo) sound recording with the frequency of sampling 4 kHz and 64-bit resolution. Recording lasts 1 minuteThe results are recorded in a file, data compression is not performed.
Determine approximately the size of the resulting file (in MB).
As an answer, specify the nearest number, multiple to the size of the file. 2
.
✍ Show Solution:
- By the formula of the audio file, we have:
I \u003d β * ƒ * T * s
Result: 4
Solution 9 tasks of the EGE on computer science, option 1 (FII, "EGE Computer Science and ICT, standard examination options 2018", S.S. Krylov, i.e. Churkin):
The musical fragment was recorded in format quadro (four-channel entry), digitized and saved as a file without the use of data compression. The size of the file received 48 MB. Then the same musical fragment was recorded re-in format mono With sampling frequency 2 times lessthan for the first time. At the same time, when repeated recording, the playback of music was reduced 2.5 times. Data compression has not been produced.
Specify file size in MBobtained when recording. In response, write down only an integer, the unit of measurement is not necessary.
✍ Show Solution:
- We write the known data on two state status - before conversion and after:
Result:15
The author of the tasks is a leading specialist who is directly involved in the development of control measuring materials of the EGE.
Typical test tasks in computer science contain 14 options for sets of tasks drawn up with all features and requirements of the Unified State Exam in 2019. The purpose of the manual is to provide readers about the structure and content of Kim 2019 on computer science, the degree of tasks' difficulty.
In the collection there are answers to all test options, there are solutions of all tasks of one of the options, as well as solutions to the tasks of part 2.
The manual is intended to teachers to prepare students for the exam in computer science, as well as high school students - for self-preparation and self-control.
Examples.
The automatic camera produces raster images of 640 x 480 pixels. In this case, the volume of the image file cannot exceed 170 KB, the data packaging is not performed. What is the maximum number of colors can be used in the palette?
The A16 performer converts the number written on the screen.
The artist has three teams that are assigned rooms:
1. Add 1
2. Add 2.
3. Multiply by 2
The first of them increases the number on the screen on 1, the second increases it to 2, the third - multiplies to 2.
The program for the A16 artist is a sequence of commands.
How many programs exist that convert the source number 3 to the number 12 and at the same time the trajectory. The program shows the number 10?
The trajectory of the program calculation is the sequence of the results of the execution of all program commands. For example, for the program 132, with the initial number, 7 the trajectory will consist of numbers 8, 16, 18.
Free download electronic book In a convenient format, watch and read:
Download Book EEE 2019, Computer Science, 14 options, Typical test tasks, Leschinner V.R. - FilesKachat.com, fast and free download.
- I will pass the exam, informatics, typical tasks, Leschinner V.R., Krylov S.S, Ushakov D.M., 2019
- EGE, informatics, grade 11, preparing for final certification, Leschinner V.R., Krylov S.S., Yakushkin A.P., 2020
- EGE 2020, computer science, 16 options, typical options for examination tasks from the developers of the EGE, Leschinner V.R.
- Informatics, a single state exam, preparing for the final certification, Leschinner V.R., Krylov S.S., Yakushkin A.P., 2020
The following textbooks and books.