by Dive Cameras on November 22, 2009
Illumination is a fine art. It appears in the photographs of Ansel Adams, the cinematography of Haskell Wexler, and the paintings of Caravaggio. Take away illumination and there is no color, no shadow, no contrast and no art, no science, no plant life, no anything. Light fills the void and is the and is the fundamental building block of life, and hence art and culture. Light is a big deal. Yet tons of folks treat light like a forgotten mistress. The giant solar orb rises and and they grumble ’cause the got to get out of bed. The glowing orb sets and the streetlights come on. The house lights could be oil lamps, incandescent bulbs, fluorescent lights, moon light or the glow of the television. The natural lighting of the sun, fluorescent lighting, and the glow of a light bulb all illuminate, but they are not the same. Light has a color temperature. Artists, cinematographers and designers are well informed of the color temperature of lights. They use them to great affect. Understanding color temperature is an important skill for any artist or designer.
Color temperature is discussed in terms of warm and cool. The warmest temperatures run in the reddish hues, the coolest in the bluish hue. Average person on the street associate heat with color, thinking the hottest light source should create the warmest colors. The opposite is occurs. The sun has blue tones and a flame has red tones. A flame is perhaps the easiest way to visualize the difference in shades. The hottest part of the flame is the part closet to the burning surface. This part of the fire is usually blue. The edge of the fire is yellow, orange and sometimes even a bit red. This can also be witnessed in the daily passage of the sun. In the cooler hours of the day, the rising or setting sun is red, while the midday sun shines down hot and blue. Our eyes view sunlight as white and therein exists the challenge in photography, cinematography and design.
The human eye operates like one of the best filters ever invented. Whenever the eyelid opens, the eye and the brain work work in conjunction with each other to determine color. A space painted white lit by tungsten lightbulbs will appear white. During the day the same wall will appear white. The ocular nerves and the brain adjust. This is demonstrated when taking a photograph with the camera white balanced incorrectly. If it is white balanced for sunlight and the room is illuminated by tungsten light it will appear very yellow. If it is white balanced for tungsten bulbs and shot under sunlit conditions the picture will appear very blue.
Interior designers, photographers, filmmakers and painters all take into account color temperature. The paint on the wall whatever color it is, will vary with the quality of light. A good designer considers the color of paint in tandem with the source of light. Colors help create ambiance. Even when a person believes they are looking at white, the body reacts to the warm and cool tones.
Knowing color temperature is a helpful tool for anyone interested in art or home design.
by Dive Cameras on November 20, 2009
It’s hard to comprehend the fossilized remains of single-celled plants that lived 15,000 years back could be of use to us in today’s modern world, but scientists have come up with a method to utilize the diatomaceous earth ( D.E. ) they created by dying in the ocean areas of their world. These remains of miniscule plants are called diatoms, and together they make a white, odorless powder that has become quite helpful to humankind. Not being an inventor, it’s tough to imagine how someone figured out a way to make a coating out of this material which, when applied to the pressure side of filter elements creates a filter that traps many different kinds of waste, but somehow this process has come into widespread use.
D.E. Makes a good filtering material, because it is very porous. You may wonder , however , what kind of filtering diatomaceous earth filters are used for, and the answer’s water. D.E. Is an excellent material for filtering foreign particles out of the water supply. Although it will not disinfect the water and make it OK for drinking, it still rids affected water sources of such things as lint, hair, mud, protozoa, cysts, and bacteria. As you can see, these filters are important in the water purification process which manifestly needs to start somewhere. Removal of larger particulates needs to be done before other processes can tackle even finer contaminants and effectively exterminate them.
Diatomaceous earth filters make filtering out the large particles easy since it’s made of microscopically-small particles that are hollow within. These hollows allow miniscule contaminants to be trapped while the water runs on thru. Because of the fact that these filters are notable to filter out colours and elements that have been dissolved in the water, there are some FDA laws about where and when the filters can be used. They are at length utilized in water treatment plants and swimming pools , however , and are also extremely helpful for filtering well water under the influence of surface water. Among D.E.’s other advantages are the facts that there are no chemicals required in its use, and itis also much less costly than other options that are available.
by Dive Cameras on April 29, 2009
Discounts on canon video camera Just Released
Whether your a amateur or an expert in the world of video, the 2009 lineup of Canon video cameras has something perfect for everyone.
Canon’s exciting line-up of high definition and standard definition camcorders continue to rate among the best in class. And because they’re available in every format - Flash Memory, Hard Disk Drive, DVD, HDV, and mini DV - Canon has the most to choose from when it comes to looking for a great video camera .
Now if you’re looking to the professional side of shooting video, then you’ll love some of the new improved products that Canon has. Canon’s range of professional digital camcorders is made for demanding creative videographers who want the proper tool to realize their unique creative goals . At the heart of all these canon video camera is Canon’s philosophy of creative control, flexibility, and capability, in both High Definition and Standard Definition formats. Canon seems to meet every demanding industry, and whether it’s prime time television, documentaries, independent films or anything in between, every spec and every seems to be designed to meet the challenge. Not to be outdone by other brands, Canon Video Cameras come with their own professionally designed optic lenses that are fully interchangeable. So with the army of new high-def camcorders for our enjoyment that have just been released,Let’s take a few of them.
Canon Video Cameras HD VIXIA S10 / S100
The VIXIA HF S10 and VIXIA HF S100 flash models, which offer up to 32GB of internal storage along with an SDHC card slot. Both units tout the DIGIC DV III image processor, an 8.59-megapixel Full HD CMOS sensor, face detection, Auto Exposure system and the ability to snap 8-megapixel stills. .
Canon Video Cameras HD VIXIA HF10 / HF200
Next we’ve got the VIXIA HF20 and VIXIA HF200 models, both of which include a 3.59-megapixel Full HD CMOS sensor and a 15x lens. Closing out the bunch is the HV40 HDV, which offers a 2.96-megapixel Full HD CMOS sensor, 10x zoom lens, native 24p support and a Custom Key Mode that filmmakers should adore They both have 15x optical zoom and 300x digital zoom.
Canon Video Cameras HD VIXIA HG21
The Canon VIXIA HG21 is a High Definition camcorder that measures 3.1 x 3.0 x 5.5 inches (W x H x D) and weighs 1.2 pounds when fully loaded. The camcorder is equipped with a number of Canon-exclusive technologies including a 12x HD Video Lens, a 3.3 Megapixel HD CMOS Image Sensor, as well as a DIGIC DV II Image Processor.
Canon Video Cameras Professional HD XHA1S
For the professionals who require a smaller, lighter weight HD camcorder but who won’t give up capability and performance, Canon offers the XH A1S.Starting with the superb Canon Genuine Canon 20x HD lens with Professional L Series Fluorite, the XH A1S adds 3CCDs, each of which is at 1440 x 1080 pixels. It also means you can be sure that your shooting in the field will be the best it can be with Canon’s SuperRange Optical Image Stabilization. TheXH A1S gives you features that let you make manual adjustments to fine-tune your video- the ultimate in total image control.
As you can see this superstar lineup of canon video camera is bound to meet and exceed your highest expectations.
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