Types of Gas Mask - Equipment For Personal Safety

By 12BuyOnline.com

Tips - 25% of American homes have a home security system; only one quarter of American homes are protected by a home security system, despite a recent survey showing the majority of homeowners believe that having a home security system is effective in deterring burglaries.

These days, everyone is more of aware of their need for understanding about personal safety and security. We all want to be prepared without being excessive about it. However, there are some personal safety devices and equipment that we should always keep on hand. One of these is a gas mask.

Having a gas mask for each member of your family is simply prudent. The most important reason for a gas mask is in the event of a fire either at home or in the office. Remember, it is not the flames that cause the greatest number of deaths; it is the smoke. In addition, a gas mask can give you those vital few moments to get yourself and your family to safety.

Mask come in two basic types. There are the half-mask air purifiers and the fall face hooded type. The hooded masks offer protection to your eyes, which can be vital in a wide variety of circumstances. The half mask may not be acceptable because the eyes are very sensitive to chemicals and offer an entry point for bacteria. However, they are bulky and less easy to get on in a hurry.

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The basic principle behind a gas mask is to filter the bad air so that when you breathe, you are safer from the toxics effects of whatever is in the air. Most gas mask filters start with some sort of charcoal filtration system. Charcoal removes a lot of unpleasant chemicals and makes the air tolerable, at least for a short amount of time. Any filter can use one or more of three different techniques to purify air: particle filtration, chemical absorption or a chemical reaction to neutralize another chemical.

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If you are you interested in purchasing a gas mask, make sure that you purchase from a reputable dealer. It is not going to do you any good to buy cheap and risk you life or the life of a loved one on substandard quality.

Because people are much more conscious about safety these days, there are wide varieties of designs that make a gas mask more user-friendly. Not only are they easier and faster to put on, but they store better and can be placed in locations that are more convenient. Do not be surprised if one of your office mates has a mask in his or her desk drawer.

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Remember, having a gas mask readily available can and very well might, save your life.

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Equipment Needed for Bird Photography

Tip! Teach your children to never trap or kill birds and other wildlife.

The nice thing about bird photography is that it can happen anywhere on our beautiful globe. The not so nice thing is that birds are small or shy, and you need to be able to get close enough with your equipment. In this article, we will be looking at the ideal equipment for bird photography. We will also be having a quick look at how to use this equipment.

Camera body

We live in the world of digital photography, and therefore we will only be discussing digital camera bodies. I am also a really big Canon fan, so I will talk Canon, and you can translate it to other manufacturers if you need to.

You will need a decent camera body that allows you to set continuous focus while shooting images in the raw image quality. The cheapest body allowing you to do this is the Canon EOS 20D. However, it is not really cheap. The reason for it being not too affordable is that it is actually a very good all-round camera body for the serious amateur or professional. You cannot go wrong with this body…

Tip! The domesticated birds catch this virus through sharing water, feed or soil that has become contaminated or through inhaling the airborne virus. The flu will then spread quickly from one bird to the other eventually leading to other flocks.

Lenses

A lot of amateurs think that a really decent long zoom lens will solve all their problems. I have been there guys, and it does not. Do what the professionals do and get that long prime lens.

I used the Canon EF 100-400mm f/4.5-5.6L IS USM for a long time, and my results were decent but not good enough. It is not the sharpest lens. If you need to use a zoom rather stick with the Canon EF 70-200mm f/2.8L IS USM. It is pin sharp.

Tip! Examine the bird cage for protruding parts and objects that can hurt the birds.

I now use the Canon EF 500mm f/4L IS USM and it is the best thing that could have happened to my photography. It is very sharp and very fast at the same time. A bit heavy at times, but I need the exercise! With this lens I mostly use a Canon Extender 1.4x II for an effective focal length of 1 120 mm with autofocus! That is plenty for any bird, and I cannot imagine getting a lot of good bird photographs with anything shorter.

By the way, do not use manual focus. Today's cameras were not built for manual focus as the viewfinders are small and do not allow you to see enough detail to manual focus effectively.

Photographing flying birds

Okay, now you have all the equipment and you are heading into the field to get that award winning photograph of a flying bird. You have to have enough light entering your lens for a fast enough shutter speed to freeze the action. You also want your camera to focus where the bird is in that split second you are going to give it before firing away. So what do you do…?

Tip! The single most important thing than can be done for an epidemic, such as avian bird flu, is to have well-prepared local health care systems. People should be prepared in ways that are sustainable and will remain useful even if the epidemic does not occur.

Set you camera to an ISO speed of 400. In sunshine this ought to be fast enough. The reason for not using ISO 100 or 200 is that you are photographing action and you do not want anything to blur.

You must also make sure your lens is open at its maximum aperture. A Canon EF 500mm f/4L IS USM lens coupled with a Canon Extender 1.4x II gives a maximum aperture of 5.6, and this is what I use when photographing flying birds.

Also ensure your camera is set to continuous autofocus. Canon calls this setting AI Servo focus. This is crucial and the main reason why I am not a fan of camera bodies like the Canon EOS 350D. They do not allow you to use this focus with raw images… Thanks Canon!

I also set my image stabilizer to Mode 2 for photographing moving subjects, to avoid it actually working against that sharp photo rather than for it…

Now all that is left is moving that heavy lens around while the birds are flying past. Happy shooting!

Tip! Do not put the bird cage exposed to draughts, the birds can catch a cold , and they should be exposed to the sun no more than 1 - 2 hours, because they can get overheated and can suffer from hypothermia.

Conclusion

We professionals have a way of sometime making it sound like you do not need good equipment to be a good photographer. That is utter non-sense. Get yourself decent equipment and you will see why the pros get the shot and you don't.

The other thing that makes the professionals so much better than the average amateur is patience. Go and sit somewhere where there are birds, forcing yourself not to move for three hours, and you will get the magic shots. Your patience will be rewarded.

Dries Cronje is a freelance nature photographer operating in Southern Africa. He has a passion for teaching and has dedicated one of his sites, http://www.africa-nature-photography.com, purely to helping his fellow nature photographers.

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