Wednesday, 20 April 2011

Reflection

In this course LSEC-N100 I learned many things and how to depend on myself if I face any problem . First how to research information and how to choose the good essay from the internet or magazine or newspaper while I advance my information and experience in English language also in this course. The new thing I learned is summary essays and how to get a right reference.  I did many things like summaries essay. I took it from a magazine; also I researched about Bugatti vs. Porsche to know which car is the best, and what is the most difficult is the report submission because it is required from me to write above 800 words and  that takes times Whatever in this course I have done, I must put it in this website blogger.com.
I used some of my knowledge and some from the internet that increased my knowledge, like I wrote about cameras and I have one so this essay was good to me in this course and depended more on my knowledge.  
In my opinion, I learnt how to summarise and how to get information from different sources. I know how to work independently.

Thursday, 14 April 2011

cameras

The invention of the camera influenced and contributed to the technology in many ways. This is due to the inventor George Eastman, who invented the camera in 1888 . After the invention a lot of people made many developments in the technology of the camera and used it in many areas of science, journalism and medical science.
Electronic technology has caught up with the growing demand for advanced and innovative surveillance technology products.
Surveillance Technology Products:
Panning and tilting cameras, digital video recorders, hidden spy cameras, wireless nanny cams, and fully fledged motion-activated networked surveillance systems keep an eye on all suspicious movements. That shows how the technology of the cameras has improved.
How did the 1st camera affect culture, economy, society, and the environment?
Nowadays cameras are used in many products and the most important product is reducing the irregularities in the streets of the world.
Given the number of traffic violations resulting in many accidents that have claimed many lives and property, the security authorities stress, in all parts of the world, traffic control on a regular basis to avoid the occurrence of such incidents.
Techniques of modern so-called traffic control cameras have spread in Western societies for some time, but this technique is the recent experience in the Arab world. But  the effectiveness of this technique may depend on the availability of a number of factors, including:
- Educating the community about this technology (cameras, traffic control) through various media.
- Activating the role of these cameras through direct and rapid punishment for violating traffic regulations.
Experience has shown the world beyond a reasonable doubt, that the technical effectiveness of the cameras for several aspects, to deter offenders and reduce accidents and victims.
As for deterrence, global experience has shown that cameras are important. For example, a radar speed camera reduces the number of drivers who exceed the speed limit on the road by a significant amount.
Cameras are more efficient:
There are requirements for success, and in order to be effective, we must develop criteria for the installation of cameras and their selection and analyse the information and evaluate their performance.
I suggest that we have to speed the application of the installation of these cameras to cover all towns and villages, and identify the most important places to be installed.
Economic cost:
For the economic cost, one of the objectives of the use of electronic surveillance is to overcome the limitations of human resources required by the conventional control, and the evidence is that a single camera, for example, may serve some 20 patrol cars
Do not forget that the camera does not get sick like humans, does not get tired and fatigued during the day. These are important in the process of traffic control.
Conclusion:
So we knew that cameras can be used in many fields. In some places they need safety so they use hidden spy cameras and the journalists use cameras to take photos and put them in magazines , TV, books.
Safety :-
As maintained properly. Damage to the electrical components or accessories with a digital camera could lead to fire or to a malfunctioning or broken unit. Use these tips to properly maintain, use, and protect your digital camera (Steve Schuldt 2010).
Only use an AC adapter or battery charger that is designed specifically for your make and model of camera. Substituting electrical equipment made for other models could void your warranty and cause damage to the unit (Steve Schuldt 2010)
Only use rechargeable batteries that are specifically recommended and approved for your device. Using an ill-fitting or overly powerful battery pack could cause damage to the circuit board (Steve Schuldt 2010).
Make sure any cables you use with your unit AC adapters and USB cables especially are free from nicks and cuts. A damaged cable could cause a fire (Steve Schuldt 2010).
Do not try to fix the interior components yourself. Simply opening the camera case likely will void your warranty and could result in permanent damage to the camera (Steve Schuldt 2010).
Remove the batteries if you will not be using the camera for a week or more, especially if the batteries are empty. Fully discharged batteries are more likely to leak acid, which would damage the camera (Steve Schuldt 2010).
If the camera does not charge properly or seems to "start and stop" when charging, consider sending in the camera in for repair. You may have a short inside the camera, which could cause damage to the camera (Steve Schuldt 2010).
Do not expose the device to extreme temperatures or water, unless your particular model of camera is designed for harsh conditions. In addition, avoid exposing the camera to sudden changes in temperature (Steve Schuldt 2010).
Avoid using the camera in high humidity conditions, which could cause condensation inside the camera body, leading to damage to circuitry or the LCD (Steve Schuldt 2010).
Never remove the battery when the camera is in operation or is storing photos. Suddenly removing the power source while the camera is working could cause damage to data or could damage the circuitry (Steve Schuldt 2010).
Avoid storing the camera for extended periods of time in areas exposed to strong magnetic fields or electromagnetic radiation. Such exposures could damage the LCD or affect the camera's circuitry (Steve Schuldt 2010).
Quality:-
The size of the digital sensor element (which is equivalent to the size of the negative for film cameras) is pretty small in all consumer digicams - typically around the size of a fingernail (and a small fingernail at that!). As I said above, a 35mm film frame is 24mm high by 36mm wide but most digital cameras use sensors very much smaller than this. Here are some typical digicam sensor sizes. The "name" of the sensor is based on specification for old TV tubes used in the 1950s. Nobody is quite sure why it's being used for modern digital sensors since the "sizes" don't really relate in any consistent way to the actual physical size of the sensor. However these names are widely used, so it's best to know what they are. They are often listed in digital camera spec sheets (Bob Atkins 2010).
Digital Zoom and Optical Zoom
Most cameras have both optical zoom and digital zoom. Optical zoom works just like a zoom lens on a film camera. The lens changes focal length and magnification as it is zoomed. Image quality stays high throughout the zoom range. Digital zoom simply crops the image to a smaller size, then enlarges the cropped portion to fill the frame again. Digital zoom results in a significant loss of quality as is clear from the examples below. It's pretty much a last resort, and if you don't have it in camera, you can do a similar job using almost any image editing program (Bob Atkins 2010).
References:
·         Choosing a Digital Camera - photo.net. (n.d.). Photography community, including forums, reviews, and galleries from Photo.net. Retrieved December 7, 2010, from http://photo.net/equipment/digital/choosing

·         Eric,R.(n.d.).history of the camera – Wikipedia,the free
encyclopedia.Wikipedia,the free encyclopedia. Retrieved 6April, 2011 from www.en.wikipedia.org/wiki/History of the camera
·         Finger,Stanley."History of the camera – wikipedia, the free encyclopedia."wikipedia,the free encyclopedia.n.p.,n.d. Web.6April. 2011.           http://en.wikipedia.org/wiki/History_of_the_camera.
·         Toyoda,k.(n.d.).History of the camera – wikipedia,the free encyclopedia.wikipedia,the free encyclopedia.Retrieved November 6April , 2011 ,                         http://en.wikipedia.org/wiki/History_of_the_camera
·         tes. (n.d.). Digital Cameras - A beginner's guide - photo.net. Photography community, including forums, reviews, and galleries from Photo.net. Retrieved 19April, 2010, from http://photo.net/equipment/digital/basics/
Using and Maintaining a Digital Camera - Safety Precautions to Consider. (n.d.). EzineArticles Submission - Submit Your Best Quality Original Articles For Massive Exposure, Ezine Publishers Get 25 Free Article Reprints. Retrieved 19April, 2010, from http://ezinearticles.com/?Using-and-Maintaining-a-Digital-Camera---Safety-Precautions-to-Consider&id=4843220