Tuesday, March 31, 2009

Filters For A Camera

Different Kinds Of Filters For A Camera


By Savel Benaya


If you are a professional photographer, you must have a set of filters in your camera equipment. Even if you are just an amateur, you probably have one or two filters. What are filters? Why do photographers buy different filters? How do they work?


Camera filters are transparent optical elements that change light properties entering the camera to improve the recorded image. Filters affect the different properties of an image such as sharpness, contrast, color, highlight flare, and light intensity. It can alter one or a combination of these properties, and can also create various special effects.


Camera filters are connected to the front of the lens. Aside from its features, it also protects the lens from elements such as salt air. Some cameras need lens adapters to be able to use filters.


Filters work the same whether you use them on a digital camera or film. There are just a few differences to be considered. Filters that can reduce excess contrast such as polarizers are helpful in a digital camera because digital is more inclined to blow out highlights. Digital cameras are also known to be less sensitive to ultraviolet light, thus, ordinary UV filters may not be needed. Also, infrared filters are easier to use in digital cameras.


Some Filter Types


There are different kinds of filters for a camera and each has its own purpose.


- Ultraviolet filters. As the name implies, this type of filter absorbs ultraviolet light. Cameras, especially ones that use film, have high sensitivity to the invisible light known as ultraviolet light. This is common in making outdoor shots, especially in highly elevated places where there is only a thin layer of atmosphere that absorbs the ultraviolet light.


Without UV filters, viewing far images can be difficult because UV causes a haze that diminishes details with farther distance. UV filters are available in various absorption levels measured by the percentage of transmission at 400 nanometers. A filter that transmits 0% is ideal for long distance and aerial shots. For normal situations, a UV filter with 29% transmission is generally good enough.


- Infra-Red filters. These filters are used to reduce visible light. Filters that can totally absorb visible light and transmit only infrared lights are useful for situations like recording heat effects and aerial haze penetration.


- Natural density (ND) filters. ND filters are used when light intensity is high and proper exposure needs to be attained or when a specific lens opening is required for sharpness purposes. This type of filter evenly absorbs light throughout the visible range which alters the exposure effectively without the need to change lens opening or do color shifts.


- Polarizing filters. Polar filters or polarizers enhance contrast, color and reflection control. It has a different optical principle compared to other filter types. Polarizing filters allows light to pass through in just one vibratory direction. Different alignment can produce different effects to the image. If the filter is aligned perpendicularly to the polarized reflected glare, the result would create stronger colors because true-colored reflection will pass through.


Polarizers are increasingly being used for outdoor shots to improve contrast and color saturation. A blue sky can be darkened by a polarizing filter, but it has to be blue in the first place.

Polarizers can also minimize and control reflections from water or glass surfaces. To get the best results, an angle of 33 degrees incident to the surface is advisable. The effect can be seen by viewing through while the polarizer is rotated. An object in water can appear as an object out of water without having the reflection.


Optical filters can be a good investment for those who want to make a living out of photography. It allows for different kinds of shots with special effects. It also makes an image look more alive by the different features and effects these filters have to offer.


But even when taking pictures just as a hobby, having some of these filters will be necessary to get the image of clarity desired. Taking a shot without a filter is indeed different from a shot with one.


There are just some considerations that need to be thought about before buying filters. Different types of filters are obviously for different purposes. It is best to determine what the main purpose is and what type of situation is commonly encountered.

Tuesday, March 24, 2009

Buying A Camera

The Things That You Have To Consider When Buying A Camera


By Savel Benaya

Photography is a much loved hobby around the world. Many people would want to get their hands on a camera

and start shooting away, or get some supplies to be able to build their own darkrooms and develop the films themselves.


Photography is a fulfilling hobby, however, there are many equipments out there which can be sources of confusion especially for beginners. The mere number of equipments can stir up one’s head.


What better way to guide a photography student than to give tips on how to buy a camera, which is of course, the most basic equipment in photography. This article tries to give some basic tips regarding the things that you have to consider when buying a camera.


1. What do I need?


If you want to buy a camera, you must first ask yourself- “what am I going to use it for?” there are many different kinds of cameras out there and they are used for different purposes. What we would recommend, especially for beginners, is to get a good, sturdy point-and-shoot camera.

These cameras are very handy and can be used in any occasion.


Well, the most intriguing pictures are the ones which capture unique events from unique angles. You may not be able to bring a more intricate piece of equipment when exciting things happen, but a point-and-shoot camera is always carried by photographers. There also are many other features that you might want to look at or avoid in choosing cameras such as stands and shutter features.


2. Research


A photography enthusiast needs to be able to know about what he wants to do when taking pictures. Reading different materials such as photography magazines (example: Apogee Photo or Popular Photography” can give you updated and fresh information about photography in general and photography equipments.


3. Know your budget


Getting the best pictures doesn’t mean that you have to buy the latest and the most expensive model on the market. It all depends on who is taking the photograph and the equipment is just a tool. More features mean more expenses. A buyer must be able to assess what features he needs to be able to get comfortable with a camera. It’s really a waste of money if you buy a top-of-the-line camera and don't know how to use half of its features.


These are just some basic tips on how you can start assessing what camera to buy. You must look into the details of a certain camera and assess the features and prices.

Wednesday, March 18, 2009

Travel Photography

Tips On Exercise Good Travel Photography



By Savel Benaya


Traveling is one of life's greatest pleasures. Capturing those precious and exciting moments is even more pleasurable, especially if it's a once-in-a-lifetime trip. For the photo enthusiast, taking pictures of everything in sight is as important as going to these places.

So how can you exercise good travel photography? Here are some tips:


1. Choosing the right variety of camera

Purchasing the perfect camera can be as hard as deciding where to go on a vacation. A primary consideration for travel photography is whether to get a single lens reflex camera or a SLR, or a point-and-shoot type. They each has their own benefits and disadvantages.


In SLR, lenses can be interchanged. A photographer can view exactly what the lens is seeing because of its reflex viewing system. Point-and-shoot, meanwhile, have viewfinders that adjust the view of the image automatically. They are easier to use than the SLR, but its viewing range is a bit limited.


2. Selecting the right kind of film

The dilemma in choosing the right kind of film can be solved by determining the output desired and the traveling conditions in which the pictures will be taken. You need to choose between a color negative or a color side if you want to take colored pictures. The benefit of using a color negative is that it tends to be forgiving of corrections in color or errors of exposure. Professional photographers, however, go for slide films because almost all commercial reproducing is produced from transparencies.


3. Researching for the trip

Knowing the right information about the place your visiting is as important as shooting the pictures. Planning the trip in detail enables the photographer to improve on the quality and quantity of opportunities where he can take great pictures. It is essential to read before a trip. Browse through materials such as travel guides, magazines, maps and newspapers. Also, try to talk to someone who has actually been their. The information that they can give will be very valuable.


4. The right way in creating a travel journal

The pictures taken during a trip should tell a story, and should not be just a jumble of random pictures. It should chronicle the trip from start to finish. It is important to track the dates that the pictures were taken.


One should not turn down the experience of travel, just the same, as one should not forget to capture precious images from that trip. Perfect planning and having a keen eye for a good image can be the key to achieving everything.