A device that makes video recordings and takes photographs with the help of a light sensor is called a digital camera. There are certain cameras equipped to take only still photographs, can also record moving pictures as well as sound. The digital camera is steadily gaining popularity over the other cameras available.
The advantages of the digital camera are many. The images taken can be seen immediately after it is recorded. The memory storing capacity is also amazing. Even erasing or editing is simple task in these cameras. The multiple functions of this camera, is the reason for its wide ranging usage. It is used in cell phone s as well as in the astronomical instruments to obtain perfect pictures.
The original concept of the digital camera in its rudimentary form was conceived by Eugene Lany, a scientist working on jet propulsion projects. He had clearly elucidated he process by which still photos could be taken with the help of a light sensor. This was conceived much before the images were digitized on scanners. The main reason for making the devise was to keep the astronauts informed about their navigation during the trips to space. Various photographs of the planets and the other celestial bodies were sent by them.
Image scaling is referred to as the process involved in altering the size of a digital photo or image. Altering the size can be done by down sizing or making the image smaller or enlarging it. Retaining the sharpness of a digital photo while being enlarged or downsized from its original size is the ultimate goal of every photo enthusiast. This is possible with the use of online or standard digital photo enlargement tools. Many interpolation algorithms available online or from downloadable software make it possible. But it should be always noted that the size and texture of the original photograph can affect the quality of the enlarged output image.
In digital photo enlargement, the size of a photo or image is increased and pixels normally become more visible in doing so. Most often, some of the details in the photo or the image are lost in the process, i.e. image or photo becomes blurred. However, there are many picture enlargers that can even out the appearance of the pixels from the original, thus retaining important details in the photo or image.
There are many methods of scaling like the nearest neighbor interpolation, bilinear interpolation and bicubic interpolation. The later is most preferred because it retains the sharpness and most of the details of the photo or image. Another good picture enlargement approach is found in some computer graphic software, called super sampling. This is also an advanced photo enlargement method that is best used when magnifying images or photos with low resolutions.
Travelling is all about gaining new experiences and seeking new environment’s to gain a wider knowledge of other regions on our planet. Every man and his dog has a camera these days presented in different formats from your standard digital camera to SLR cameras to camera phones and i-pads. In most cases these are the first thing we ensure we have packed before travelling abroad, and they are one of a few items that we take out with us on our day-to-day adventures. The problem with cameras is that they seem to get in the way of our day-to-day activities. Everybody seems to have the urge to take a picture of just about everything they see, rather than savour the moment with their own eyes.
It’s fair to say that some people spend their entire holiday looking through the viewfinder of a camera rather than with their own eyes. In many respects people are more interested about going home with a few good images representing their holiday rather than experiencing the holiday at the time for what it is. Not long ago I was on a boat trip in Namibia and we were being followed by a pod of dolphins riding the crest of waves behind our boat. I spent the whole time looking through the viewfinder of my camera trying to capture the perfect image of the dolphin’s instead of enjoying the experience for what it ultimately was, and that was the experience of a lifetime, I never did really get the perfect shot I so desperately wanted.
If we’re not careful we could all find ourselves in a situation where getting the perfect picture takes priority over the experience, where does it end? When you travel on safari these days all you see is hundreds of tourists all peering down their camera lenses at the animal in front of them rather than just sitting back and savouring the moment of being in the presence of such a wonderful creature. Although technology is positive in most ways, this certainly doesn’t seem to be a great indication of things to come. There seems to be so much pressure these days for people to get great pictures to impress their friends and families back home that half of the holiday is spent trying to get yourself into a scenario where creating this picture is possible.
Shooting the stars at night can be a difficult but hugely fulfilling discipline in photography. We have all seen those utterly fantastic shots of stars streaking across the sky, or the milky way in all of its colourful glory, and marveled at this snapshot of the heavens. It can stir all sorts of imaginative thoughts, wondering who or what is out there, are we alone, and just how to these photographers take such fantastic shots! Well, there is good and bad news for those that wish to emulate them. The bad news is that you really do need to have access to a DSLR, a good tripod and lens. You will also need to develop an intuitive sense of how to use the camera settings and just where to point your camera in the night sky. The good news is, that there really is no magic going on with the camera. The controls are there to be manipulated and it is distinctly possible to learn how and when to use your camera to get these shots.
Ideally, you are going to want to get out of the city and into the country to avoid light pollution. The warm glow of the city lights tend to mask the true glory of the night sky, which I am sure that anyone who has spent time in rural areas will testify to. Coastal areas offer better visibility.
Aside from the post-processing, taking good shots of the Milky Way is also a matter of knowing just where in the heavens to point your camera. However, it is not needle in a haystack stuff, and you don’t have to be an expert astronomer, or understand which planet is which, or which star is part of which distant constellation, to be able to figure it out. Interpreting the celestial canvas is a matter of understanding the seasons, which dictates where the distant stars are in the night sky. If you really don’t care to learn this amazing science, and that is not big deal really, you can always download the a Stellarium, which will give you an idea of where to point your lens in the night sky. This will give you an idea of where to point the camera at a given time of year. For example, if you live in the northern hemisphere, you should point the camera up high into the night sky during winter and in the south during summer, where you will see Orion, etc and the wider Milky Way. In the Spring, the Milky Way is likely to be more on the western periphery of the night sky. During the autumn, you are most likely to see the Milky Way high above the western horizon