Underwater Digital Cameras 101 For Landlubbers
Bob Miles asked:
First came the camera. Then there was the underwater camera. After that came the digital camera - and now we have underwater digital cameras. Underwater digital cameras are ideal for capturing the beauty of the undersea world (or the bottom of your swimming pool if you have that special artistic eye!). They are used by both scientists and scuba divers. Digital cameras come in many well-known brands including Kodak, Canon, Nikon, Sony, and Olympus. Surprisingly enough, the cheapest brands cost less than $200, although prices rise quite steeply for the highest quality cameras.
Some of the advantages of underwater digital cameras include:
- You can plug them into a TV.
- They are smaller and lighter than film cameras
- Bad shots can be easily deleted
- They can change resolution, which is useful for wide-angle photography in low lighting conditions underwater
- They produce better high-resolution shots
- They never run out of film (because they don’t use film!)
- They have better depth of field (up to 4 times that of film cameras)
- They feature strobe shutter speeds as fast as 1/800th of a second, much faster than even the best film cameras
- Applications include sea mode, land mode, and external flash mode
Here are some examples of the best underwater digital cameras:
1. The Casio Exilim Zoom EX-Z1000
It has a 2. 8 inch LCD screen and 10 megapixels. Housing is required. Up to 3,2000 ISO. 3x optical zoom lens, and it even includes an anti-shake feature.
2. The Pentax Optio
It has a 2.5 inch LCD screen and 7 megapixels. It requires no additional housing. Usable for up to half an hour in depths of up to 5 feet. It can even be used for shooting underwater videos. Up to 1,600 ISO.
3. Fuji Film FinePix A400
Complete with waterproof housing, 4.2 megapixels. What’s more, it’s CHEAP - under $200 at the time of this writing).
4. SeaLife DC500
Includes both Land and sea flash modes. 5 megapixels, 3x optical zoom. Features an anti-shake function that compensates for movement by either the photographer or the subject.
The foregoing is only a small smaple of the total range of brands, cameras, and features available for photographers of almost any budget and any level of sophistication.
Cheap Digital Camera: Capturing Real-life Images Was Never so Easy!
Let us have a brief look at some of the advantages of a digital camera to create a better understanding of the digital technology. The modern day digital cameras and its accessories such as memory cards are quite affordable, especially when one considers that a user can reuse the same memory card again and again. The users of digital cameras can also review their captured digital photographs on the LCD monitor, and print out only the best and removing the rest. The cost of processing digital pictures is also less when compared to a traditional film camera.
Some of the other noteworthy advantages of the digital-based camera technology are lower costs, instant feedback, enhanced and consistent results, more freedom, and the power to interact photographically with the subject. It can also allows a user to keep the neutral colours of the captured images intact with its white balance controls in almost all lighting conditions. The unprecedented growth and popularity of the digital cameras can be seen from the fact that more and more users are taking photography as a hobby and passion since it has reinvigorated their lives and their desires to click photographs.
One of the greatest benefits of the modern day cheap digital cameras is that the user can make adjustments after identifying and correct photo-capture issues with complete ease and perfection. This advantage of digital camera is impossible with the film cameras. Moreover, the responsive and natural feedback of digital-based cameras delight their users to a considerable extent.
If you want to experience the amazing world of digital cameras, you can experience the best of both world with eminent brands such as Samsung, Olympus, Canon and Fuji. The Samsung S630B, Samsung S630S, Olympus FE-15, Canon Power Shot A460 and Fuji F480 are some of the highly acclaimed and latest digital cameras in the present day market. Uncompromising quality, world class performance and usage ease come easy to these latest digital cameras and this is the reason why they receive constant appreciation from millions of their worldwide customers and even the market critics
By: Raisa Raima
About the Author:
The author is a specialist in retail writing. Her writing skills reflect the outcome of years of exposure to the retail industry. Working with retail giants as a consultant has enriched her knowledge base and her passion for writing got fire. She can be read regularly on RetailsDirect.com. For details please visit: www.retailsdirect.com Lenovo Laptops
Way To Test Digital Camera
The specifications of a camera tell just a fraction of how well the camera able to performs. We can only determine the true assessment of a cameras abilities by testing digital camera through its photographic paces in both labs-based and real-world testing, with different lighting conditions. Under wolfram lighting, we take sample photo images with our carefully created scene, which combines a variety of textures, contrast, colors and patterns. Under daylight-balanced HMI lighting, we take a sequences of test objects to measure how capable a test digital camera deals with critical image-quality challenges such as accurate color reproduction, noise, and sharpness. To determine a cameras performance, we evaluate it features on how long it takes to perform typical functions, like powering up and catching the first image, and how quick it can shoot two pictures in a row. Our performance test and picture-quality analyzes results combine to come out the basis of our whole evaluation of cameras abilities, and how it compete with other digital cameras. We provides digital camera ratings as well for all test digital cameras.
Sharpness test
we apply the tools acquired in earlier in the series to equate digital and film cameras, and we come up the question, How many pixels does a digital sensor require to outperform 35mm film? The expected sharpness of an image is straightaway impacted by the resolution of the camera that seized the image. Nevertheless, numerous other variables affect the overall sharpness of a digitally captivated image, particularly the quality of a cameras optics and its incorporated post-processing capabilities.
Noise test
People frequently mention that digital camera images have much lesser noise, and this is true. But how much better? People look for the next generation of cameras to come out with lesser noise, but are we reaching achievable limits?
The laws of physics prescribe that it is not possible to digitally capture an image that is totally free of noise. Higher ISO settings tend to generate more noise than lower ISO settings. Besides, the greater the physical size of a sensor, the less susceptible a sensor normally is to noise. Many other variables impact how noisy a digitally captured image can be, letting in a cameras optics and integrated post-processing potentialities.
Color reproduction ability test
While color can be adjusted with computer software after an image is captured by a digital camera and transferred over to a PC, it is normally better to start with a captured image that is as color precise as possibleespecially for those illustrations while an image wont be amended or could be print out directly from a printer.
Time-to-first-shot test
This test evaluates how fast a camera can capture its first image after the camera powered up. We first measure the fastest way to shoot an image after powering up; for example, with some test digital cameras, you are able to carry the shutter down when turning on the power, and itll automatically taking photo as soon as its ready. Some cameras will not register the shutter press until after they have reached a certain point in their power-on process
Additional testing
All the test digital camera methods listed in this section are carefully created, frozen scene assembled of targets with a wide range of colors, reflective properties and textures. All test images are captured using its automatic exposure mode and the native resolution of a camera. We turned off the digital zoom for all test shots. With the exclusion of tests that specifically utilize a digital cameras built-in flash, all other camera tests are done with the cameras flash switched off. In addition, except for tests that practice a digital cameras built-in flash, all test photos are captured under color-balanced and wolfram studio lights.
For this, hope you will get some ideas on the test digital camera.
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