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Journal of Xinjiang Normal University (Natural Science Edition) Volume 27 No.4

Journal of Xinjiang Normal University 20081Feb

(Natural Science Edition)

Improving the teaching of photographic lighting and composition by technical means

Liu Xueyong

(Department of Education Information Technology, College of Education, Xinjiang Normal University, Urumqi, Xinjiang 830054)

*

Using digital camera, video camera, computer and cable TV technology, an image information transmission loop is established, and teachers can be watched through monitors and televisions.

The experimental effect of watching and shooting photographic light, composition and other pictures with digital camera is realized, and the purpose of better cultivating audio-visual education professionals is achieved under the condition of expanding the scale of students.

Keywords: digital camera; Cable TV technology; Transmission loop; Improve teaching effect

China Library Classification Number: TN939. 1 1 Document Identification Number: A Document Number:1008-9659 (2008) 04-0109-03.

The Department of Educational Information Technology and the Department of Physics of our school offer basic courses of photography technology and art. Han undergraduates study in sophomore year, while minority students study in junior year. watch/observe quietly/calmly

Teacher Cha did not use modern educational media when teaching related experiments such as Chapter V photographic lighting and Chapter VI photographic composition, but through the display and introspection of relevant photos.

There are two reasons for my practical experience and related theoretical knowledge teaching: first, the teacher thinks it can be explained clearly in the experimental class; Second, the teacher thinks the students are in class.

Can understand. In fact, the degree of students' mastery is not as clear as teachers' imagination, but by their own imagination, they swallow the dates and passively accept vague concepts and

Experimental operation. How to make students not only see the lighting of the indoor teacher and the process of setting composition in the experimental class, but also see the actual framing and shooting of the teacher in time?

Effect? How to stimulate students' interest and take the initiative to accept knowledge?

According to Dell's experience tower, in the process of photography experiment, students need to combine the indirect experience gained by teachers with the direct experience gained by themselves.

Only in this way can we understand the abstract theory of photography experiment and master the standardized experimental operation process. Therefore, teachers should first demonstrate the experimental content and operation process for learning.

Student observation; Then, the students do the corresponding experiments. In this way, students will enter the role in a short time, understand abstract experimental theory and master standardized experimental exercises.

Do a process and shoot a work that reflects a certain experimental theory and represents your own thoughts.

At present, there are two kinds of cameras used in the experiment, one is an optical camera and the other is a digital camera. The former can't reproduce indoor photos in a short time in class.

The effect of photographic composition depends on the teacher's choice of photos (or pictures) and abstract experience. Although students like it, they think that the pictures explained by the teacher have the same artistic effect as the pictures.

The effect of self-portrait will be far from perfect, with poor initiative consciousness and slow action of the role, which is not conducive to cultivating the photographer's thinking mode and standardized operation. Compared with the former, the latter can

In order to realize what you see and get instantly, it is easy to stimulate students' enthusiasm; However, the scenic spots of digital cameras are small, which can't make most students follow the rules when listening to the teacher's explanation.

Operation demonstration, short-term observation of indoor lighting, real-life composition and other related experiments of framing and shooting effects. Students can't get perceptual knowledge, and they can't directly.

Comparing the effect (experimental operation) with the effect of the teacher's demonstration operation will lead to self-confidence. So how to design it reasonably can make most students read it in a short time.

Shoot the scenic spots and pictures on the teacher's digital camera (Kodak Easyshare Dx6490) to realize the unification of the teacher's experimental operation, experimental content and experimental effect.

Improve the teaching effect.

Using camera, computer and CATV technology, the transmission loop of scenic spots and picture information shot by digital camera is established (as shown in the figure). Through the display

Television can instantly watch indoor lighting, composition pictures and pictures taken by teachers with digital cameras to achieve the effect of picture contrast and improve students' sense of reality.

Confidence in operation.

1 Establish the transmission loop of digital camera image information.

The teacher connected the video output port (video) of the camera (CP-704H) to the video input of the modulator CM Ⅱ-2b with a video cable in advance.

The port (in) is connected with the RF output port of the modulator (channel 3) and the input port 1 of the mixer (Zoanan), and outputs the RF of the mixer through the RF connection line.

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* [Date of receipt] 8 May 2008

[Author Brief Introduction] Liu Xueyong (1967-), male, from Urumqi, Xinjiang, is a senior experimenter, mainly engaged in modern educational technology and experimental teaching research. Journal of Xinjiang Normal University (Natural Science Edition) 2008

The ports are connected to the input ports of four distributors, and then the RF output ports of the four distributors are respectively connected to the RF input of TV (Konka T2120) through four RF connecting wires.

Mouth; Then turn on the power supply of its related equipment, and semi-automatically search the signals shot by cameras on three channels of four color TVs (note that the two connectors of some connecting cables may be different.

Sample).

2. Establish the information transmission loop of the pictures taken by the digital camera.

The teacher emptied the contents of the digital camera before doing the experiment to improve the transmission speed of the computer; First, connect the data line of the host from the monitor to the monitor.

Remove the entrance port, connect it to the To VAGCARD port of the digital-to-analog converter (BS-330), connect the 5v DC line of the digital-to-analog converter to the USB port of the host, and convert the digital-to-analog converter.

The data line of the converter is connected from its To MONITOR port to the previously removed display data input port, and the video line of the D/A converter is connected to another modulator.

The video input port (channel 4) of the tuner connects the RF output port of the modulator to the mixer input port 2 with a RF connecting cable; The connection mode of the mixer and four distributors to the TV is the same as that of.

Same as above; Then the related equipment is powered on, and the signals of computer monitors are searched semi-automatically on four channels of four color TVs (pay attention to two connections of some connecting wires).

The head may be different).

Figure 1 Connection block diagram of digital camera to TV monitor

Application of image information transmission loop

3. 1 Scenic spots transmitted by digital cameras

When doing photography lighting, photography composition and other related experiments, we should first arrange the photography environment, adjust the position and angle of the photo frame of the digital camera, and choose the appropriate picture;

Aim the camera fixed on another bracket at the picture of the digital camera. If the related equipment is turned on one after another (including the camera), use the remote control to adjust the TV channel.

(Channel 3), you can see the pictures of scenic spots taken by digital cameras; At this time, it is convenient to manually adjust the distance between the digital camera and the focus camera (about 7.5cm).

Students can clearly see the pictures of scenic spots from the TV screen; In this way, the teacher can explain the experimental contents such as photographic light and photographic composition, and choose scenic spots.

Standardize the consistency of operation, facilitate students to understand the scene picture and its framing picture, and realize the unity of listening and watching under the teacher's explanation.

3.2 Transmission of photos taken by digital cameras

When doing photography lighting, photography composition and other related experiments, the experimental teacher takes pictures of the selected scenic spots. After the shooting, the teacher connected through USB.

Connect the digital camera and the computer host (windowsXP operation interface), and you will see "Find and install hardware" in the lower right corner of the monitor and TV, and it will appear.

"dx 6490 Zoom Digital Camera Linked to Camera" interface. "Select a program to start this operation" means "Select Mijcrosoft scanner and photos".

Camera Wizard (downloading photos from scanners and cameras) "and click OK to open the" Welcome to Scanner and Camera Wizard Interface "and click" Next "to open the" Selection ".

Select the interface where you want to copy photos, select the photos you just took and click Next to open the photo name and target interface, and enter the name (such as photos) to copy to Bao.

Save the location (such as the desktop), select the option of "Delete the photos from the device after copying", click "Next", and select "Do nothing, I have already handled it" in the interface of other options.

"Finish these photos" Click "Next" to open the interface of copying photos, and click "Finish"; Open the photo you just imported in ACD See interface and display it on the monitor.

You can watch photos on the monitor and TV, and edit them appropriately (such as zooming in and out). ) to facilitate students to understand the experimental content (note that the above operations should be familiar with quickly)

Speed).

If the teacher wants to continue taking pictures, he needs to unplug the USB port of the digital camera before taking pictures. When importing photos, you need to plug in the newly unplugged USB port.

Wiring is enough; By repeating the previous operations, the process of framing, framing and shooting can be unified, and students' listening and watching can be unified under the teacher's explanation, which is convenient for students to take pictures.

Understand the experimental contents and steps such as film lighting and photographic composition, so as to realize the unity of teachers' experimental operation, experimental contents and experimental effects.

In short, through careful design, the advantages of conventional teaching methods and audio-visual media are combined by using digital cameras, video cameras, computers and cable TV technologies.

1 10 No.4 Liu Xueyong and others talked about improving photography lighting and composition teaching by technical means.

Combining the content, operation and effect of the experiment organically can reduce the difficulty of knowledge and optimize and expand the teaching process of the whole class.

The purpose of better training professionals in the case of student scale. According to the teacher's explanation and the demonstration of standard operation, students carry out photography experiments and make full adjustments.

By cooperating with multiple senses to understand abstract experimental theory, students can enter the role in a short time and always maintain a happy learning mood and strong interest in learning.

Use spare time, practice repeatedly, master the standard experimental operation process, and shoot excellent works with certain experimental theory and representing your own thoughts.

References:

Yang, et al. Photography Technology and Art Basis [M]. Higher Education Press, 2005: 76-96,99-124.

[2] Peng Guoping. Basic Course of University Photography [M]. Zhejiang Photography Publishing House, 2003: 70-82,1130.

[3] Guonong Nan. Introduction to information education [M]. Higher Education Press, 2004:11-17.

[4], Jiang, Teaching Design of Crime Scene Photography [J]. China Audio-visual Education, 2006, (3):73-77.

[5] Tan Qiaoqin. Reflections on photography teaching in the information technology environment [J]. Modern Educational Technology, 2002, (2):5 1-54.

[6] Zhan Qinglong. Analysis of several important issues in the implementation of information technology curriculum [J]. China Audio-visual Education, 2007, (3):8 1-86.

Liu Xueyong, Tavigon. Powerpoint-2003 Experimental Teaching in LAN Environment [J]. Journal of Xinjiang Normal University, 2005,24 (4): 94-97.

Using technical means to improve teaching

Photographic light and composition

Liu Xueyong

(Education Information Technology Department, Institute of Education Science,

Xinjiang Normal University, Urumqi, Xinjiang 830054)

This paper introduces the usage of digital camera, video camera and cable TV technology.

Forming a transmission loop of image information. Through monitors and televisions, students can

The observation teacher found the scenery and took photos with a digital camera, while observing.

Change the experimental effect of photographic light and composition. In this way, teachers can be better

In the case of expanding the number of students, we should cultivate more audio-visual education professionals.

Keywords: digital camera; Cable TV technology; Transmission loop; Improve teaching quality

affect

(Continued from page 98)

Practice and Thinking on the Construction of Advanced Algebra Excellent Course

Wang Diji and Gao Fukang

(School of Mathematical Physics and Information Science, Xinjiang Normal University,

Urumqi Xinjiang 830054)

This paper mainly discusses the necessity and significance of curriculum construction in universities.

Combined with my own teaching practice of advanced algebra. This is also based on the useful at-

An attempt to reform teaching methods.

Keywords: excellent courses; Advanced algebra; Curriculum construction

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