Photoshop Video Tutorials On File Formats

February 18th, 2012

hotoshop files themselves can’t be embedded into a web page. You will need to export your file and save it in a web-friendly format. There are three formats for web graphics: JPEGs, GIFs and PNGs.

JPEG: The JPEG format (pronounced “jay-peg”), works best with photographic images or images that have more than 256 colors and gradients, such as the flowers.

Images saved in JPEG format are compressed, which means that image information will actually be lost, causing the image to degrade in quality.

JPEG Quality: Changing the value in the Quality drop-down box alters the level of compression for the image. Reducing the quality may result in blurring or pixelation, but too high a setting will produce a large file that will take users too long to download.

A good approach is to decrease the quality value gradually until you notice the degradation of your image becoming unacceptable. A reasonable compromise will be somewhere around this point.

GIF: The GIF format (pronounced “jiff” or “giff” depending on which side of the tracks you grew up) can have a maximum of 256 colors.

GIF files support transparency and animation, and work best with graphics that have large areas of the same color.

PNG: The PNG format (pronounced “ping”) is similar to the GIF format in that it supports transparency and works best with solid-color images, but it’s superior to the GIF format as it has the ability to support true levels of transparency for colored areas.

Transparent PNGs are currently not in widespread use on the Web because older versions of Microsoft Internet Explorer do not support them; however, they’re often used in Macromedia Flash movies. PNGs can produce a better quality image at a smaller file size than can GIFs.

Photoshop allows you to save an image as a PNG-8 file (which works the same way as a GIF would with 256 colors) or a PNG-24 file (which allows for millions of colors as well as variable transparency).

GIF/PNG-8 Colors: Adjusting this setting reduces the number of colors used in any image. This will usually make the biggest difference in the final image. dither amount and type (No Dither, Diffusion, Pattern, Noise)

This setting has nothing to do with being nervous or agitated. Dither refers to a compression technique in which the pattern of dots is varied to give the illusion of a color gradient. Changing the dither will result in a more noticeable degradation for images that involve a large number of colors blended together.

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Questions And Answers About Ultraviolet Water Filter Systems

February 16th, 2012

henever you purchase an ultraviolet water filter system you should know that has been designed in such a way as to protect your drinking water from the occasional intrusion of microbiological contamination. These filters are becoming a lot more popular today than ever before. This is whya lot of people have a lot of questions about these filters.

Answers To Your Questions About Using An Ultraviolet Water Filter

There are some very common questions that people ask whenever they are thinking about purchasing an ultraviolet water filter. These questions include:

Are any chemicals required by this system? Or is there anything else that I will need to add?: It is recommended by most manufacturers that you use a 5 micron sediment filter because large particles act as a haven for microorganisms, which is what you are trying to destroy.

Sometimes multiple sediment filters are required because of the water’s turbidity. This is because color and suspended particles will diminish the transmission quality of any UV light. In these cases, a quality carbon filter is used to filter the sediment first.

Should I do anything before I install an ultraviolet water filter system?: You should make sure that your system (water lines, water heater, etc.) is clean first. In order to do this, you should disinfect the entire downstream system with chlorine.

How long does the UV bulb last?: You will need to replace the ultraviolet light bulb once every 10 to 12 months. While the bulb will last a lot longer then that, its capacity for neutralizing microbes will be diminished after this length of time and so you will want to make sure that it is changed at this point so that it can work as effectively as possible.

Why is the water cloudy/white after a new filter cartridge is installed?: This is because the water needs to be ran for a few minutes once a new ultraviolet water filter cartridge is installed. The water’s cloudiness indicates that there is air in your line, housing and cartridge. This is normal whenever you replace a cartridge.

After you run the water for a few minutes the cloudy conditions will go away unless your water is VERY cold. In this case the oxygen in the water is what is making your water look cloudy. Either way, it is always a good idea to run the water for a few minutes after you install a new filter cartridge.

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