Panasonic Lumix Camera Review

Ram is the acronym for 'random access memory' and is regularly calculated in megabytes. A Ram chip is a module that holds freshly accessed facts so that the central processing unit can have access to it. It is faster than reading from the hard drive and allows for easy access of recently stored data, information, and files. This means that all programs must be run straight through the Ram before they are usable.

There are two basic types of Ram, namely dynamic Ram and static Ram. A dynamic Ram is called so because it has to be constantly refreshed by the memory controller. The conjecture for refreshing is that the capacitors that hold the facts or data have a built-in leak that can only be stopped by refreshing the facts thousands of times in a second. This makes dynamic Ram slower and cumbersome compared to static Ram.

Static Ram is a type of random access memory that has a greater capacity for warehouse because it uses on-off switches instead of capacitors. However, static Ram is more costly compared to dynamic Ram because it is faster and can hold more information.

Usually, advanced versions of the dynamic Ram are used instead of using static Ram because of its high price. These versions consist of Fpm (fast page mode), Ecc (error correcting code), Edo (extended data output), and Sdram (synchronous dynamic Ram). Ecc Ram is a extra error-correcting Ram that is regularly used in servers.

Edo Ram, or extended data yield Ram, is an improvement of the former Fpm Ram. Data can be read faster and the distance of time that the yield data is valid is extended, which improves time coordination in the middle of the central processing unit and Ram, thus enhancing the performance.

The speed of a Ram is measured in nanoseconds, and the fewer the nanoseconds (ns), the faster the computer. Today we use 50 ns computers as opposed to the 180 and 150 ns that we used in the last decade.

How many times have you taken a photograph and then, when you looked at it, you got disappointed because it did not render the charm you saw at the moment of shooting? Yet, the scene you shot and the scene you saw were exactly the same. This is no surprise, because a camera sees the world differently than our eyes. I will now try to sum up the major reasons. This will help you render reality more accurately in your photos or taking benefit of these differences for creative artwork.

For starters, we have two eyes, while the camera has just one lens! Thanks to our stereoscopic view, we can comprehend depth. This is because we can see the world from two slightly dissimilar points of view. Each of our eyes sees reality from a slightly dissimilar angle (parallax angle). Our brain then elaborates the data coming from both of our eyes permitting us to comprehend depth. This is impossible for a camera, and that's why pictures tend to be "flat" (actually they are). If you try to cover one of your eyes, you will get the point. In this case, of course, your mental will still tell you if an object is nearer than other (e.g. A nearer car will appear bigger than a added away one). However, you will not comprehend depth as before. Try catching a ball person has thrown to you: you will probably miss it!

Depth of field is something unknown to our eyes but all the time lurking in the camera. When we look at something, be it near or far away, we promptly focus it. The camera ordinarily can focus either the near objects or the objects far away, but not all of them contemporarily.

Another astonishing inequity in the middle of the eye and the camera is their capability to see contrasty scenes. In each scene we look at, there are some parts darker and other parts brighter. Our eyes are ordinarily able to see correctly both of them, virtually simultaneously. But the camera can't. If you ever tried to photograph a person in the shadow with a keen background (see an example), you authentically noticed that either the person was rendered too dark (underexposed) or the background too keen (overexposed). It was not your fault: it is possible in the medium used to report the image, be it a first-rate film or a Ccd sensor.

What about color? Colors are seen differently, too. Besides, diverse films or Ccds see colors differently. Even our field of view is dissimilar from the camera, because the camera's field of view depends on the lens mounted on it.

At the end of it all, are these differences good or bad? It depends. If you are struggling to make the scene appear the way it does to the eye you will have to work hard to overcome these dissimilar characteristics. On the other hand, if you want to be creative, these same dissimilarities are a costly opportunity.