Friday, June 10, 2005

Digital camera macro mode by Jakob Jelling



The digital camera is a wonderful device that allows a diverse variety of applications with its even diverse spectral collection of utilities. As technology progresses it brings along with it those intense pleasures that human beings have only thought of. Now the digital camera has opened up the dimensions for the people and the photographers in providing with the liberty of capturing whatever they wish and of whatever type they prefer! Well the magic words are macro mode. Although the words might seem to be a bit deceiving they have really a great application in the field of digital photography and digital camera as a device. In general the digital camera macro mode allows a digital camera to photograph close-up pictures of petite objects like flowers, insects, coins, etc. Macro mode potentiality vary from camera to camera but almost all digital cameras offer this exclusive feature to enable the users to widen up their imaginations and their weirdest fantasies in creating art.

Extending the discussion further we can state that just about most of the digital cameras has a macro mode. Each of these digital cameras can be verified of having the macro mode because for each of them one of the menu buttons will have an icon of a flower on it. This is the macro mode button invariably. And thus has the specific technology built in. The macro mode button, when pressed, switches the camera into a special close focus mode and many allow the photographer to shoot less than 10cm from the picture subject. Many cameras of reputed companies like Nikon and Ricoh allows the users to be as close as 3cm from the picture subject that permits barely credible close ups of tiny objects such as little insects. The macro mode has a greater variety of applications in security measurements too. At times macro mode may be also useful for making photographic records of priced jewels for insurance purposes in order to prevent theft and fraudulent activities.

The macro mode is more often than not present on the menu button that as well has an icon of two triangles symbolizing mountains (or rather landscape mode) and sometimes MF (manual focus) too. This button has to be pressed several times until the flower icon appears on the viewing LCD. A number of digital cameras then subsequently by design shift into a particular precinct on the zoom lens making a mechanical sound as the zoom reset. While using a digital camera macro mode it must be noted that it is harder to focus for the digital camera instantly, so it takes a bit of time for adjustment. Thus the users need not hurry while using the digital camera macro mode. As the subject comes in focus the depth-of-field also increases. On the other hand, the depth-of-field is controlled by the camera's aperture. Most digital cameras are full automatic and this setting cannot be changed. Thus patience becomes a virtue while using the digital camera in their macro mode.

Much has already been discussed about the digital camera macro mode. It can be stated here that the digital camera macro mode is a really intricate feature. And every delicate object or subject needs to be handled with care. To really cherish the beauty of the digital camera macro modes the users require developing the expertise and also building a kind of patience that is necessary to cerate beauty in art and object.
About the Author
Jakob Jelling is the founder of http://www.snapjunky.com. Visit his digital camera guide and learn how to take better pictures with your digicam.

How to avoid or reduce red-eye by Jakob Jelling



Photography with the aid of a digital camera is beyond doubt very fascinating. However, it also has many a nooks that the users of the digital camera must be aware of and also must be well educated to deal with in order to produce good photographs worth the most prized digital camera. Such a concept is that of the red eye! In order to understand what this red eye actually is, a little detailed introspection is necessary. Basically speaking red-eye is a function of at least three things, they are firstly, ambient level of light because stumpy light level causes the retina of the person to be photographed to open wider to admit more light thereby divulging open the iris, which is the primary part that reflects the red light hence giving the appearance of red eyes for the subjects. Also secondly the younger the person being photographed the wider remains the retina and hence the greater the effect of red eye in the picture. Thirdly, the reflection angle of the flash plays a vital role, as the light is recoiled back to the digital camera and the closer the incident light beam is to this reflected light beam, the greater becomes the red eye effect. To prevent this instruments such as flash brackets are useful to make the flash a bit removed from the propinquity of the lens. Thus the red eye effect is somewhat revealed till this part of this discussion. Now is the time to look into a greater detail in order to analyze the various aspects of the red eye effect and also find out ways of reducing the problem as far as possible.

It can be noted here that the only important thing is that the users must ensure that the proper fixing of the angle between the flash beam and the lens axis. The general rule here is that the photographer must keep the angle wide enough that the light beam from the flash does not reflect off the retina of the person being photographed and comes right back into the digital camera lens. A good idea is to make the red-eye reduction work by making the flash shine a light into the eyes of the person being photographed just before the flash is incident and the shutter is pressed. This causes the irises in the eyes of the person being photographed to narrow down or shrink. As a result of this the eye develops a smaller opening for the eye view of the digital camera and does not show off the blood filled retina. This light is called pre light! And very importantly this process works only if the person to be photographed is in point of fact looking directly at the flash for the pre-light to come.

Other factors influencing the red eye are the level of ambient light during the time when the photograph is being taken and how near the flash light is to the lens. The rule of thumb comes out that the brighter the ambient light; the lesser is the effect of red eyes, everything else being one and the same. As the flashlight goes farther from the lens, the fewer becomes the effect of red eyes, everything else being one and the same again. Thus the key idea is that red eye is not caused if the ambient light is comparatively high. And it does have a significant effect if the shooting area is dark. Many digital cameras have built in features for anti red eye that is used to reduce red eye when taking a picture of a person looking straight at the camera also. But manually, the best red eye reduction can be obtained with the help of an external flash as described.

The above discussion has dealt with the most important ideas regarding the red eye effect. The discussion has analyzed the inherent facts about the digital camera red eye effect, their causes as well as remedies. The only thing that remains is that the users must implement these ideas while shooting under circumstances discussed here so that the red eye effect cannot harm the beauties of art created with the aid of the fantastic device, the digital camera!
About the Author
Jakob Jelling is the founder of http://www.snapjunky.com. Visit his digital camera guide and learn how to take better pictures with your digicam.