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Find and share deals and reviews on Pentax Optio W90 16441 Digital Camera 12.1 Megapixel, 5X Optical Zoom, Waterproof, Shockproof, Dustproof, Coldproof, 2.7" LCD With the Pentax Optio W90 16441 Digital Camera adventure photography doesn't get any better than this.
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Photographs enable us to capture events and moments in time and preserve these for years. This is made possible by the use of photo Cameras. A Camera is a technological device for obtaining photographic images of objects of interest.
This device is made up of three basic elements: the mechanical element (the Camera body itself), the optical element (the Lens), and the chemical element (the Film [although there are also digital cameras that don't make use of the traditional film]). All the other numerous parts and components that make up a camera simply function to support or enhance any of the above mentioned core functions.
Listed below are 15 functional components of a Camera, following which I will explain the function of 10 of them.
1. The Camera Body
2. Lens
3. Film
4. Viewfinder
5. The Shutter
6. Aperture
7. Shutter Release Button
8. Shutter Curtains
9. Shutter Speed Control Knob
10. Film Cavity
11. Film Rewind Knob
12. Film Sprockets
13. Flash Shoe (Accessory Jack)
14. Focusing Ring
15. Self - Timer Button
(1) The Camera Body: All the internal mechanical, optical, and chemical parts of a camera are held together by the Camera body. This serves to protect these very sensitive parts. The Camera body also serves as a framework against which the other parts of the Camera articulate to function properly.
(2) The Lens: The Lens is undoubtedly the most important component of the Camera (considering the main purpose of a Camera). The lens takes the beams of light bouncing off an object and focuses this light on the image plane so that a real image is formed that can be photographed. The greater majority of the modifications and refinements that have occurred in the camera since its invention have centered on or around the Lens, and that underscores the importance of this part of the camera.
(3) The Film: This is a thin roll of light -sensitive plastic which is placed at the image plane of the Lens. When the Camera is ready to take pictures, several devices combine to ensure that the film is exposed to the image formed by the lens. When the film is exposed to the image coming from the lens it records the image, and we have pictures! Before and after use, the film is stored in a light-tight film holder. Unknown to most persons, there are no black and white or color cameras. We only have black and white and color films. It is the film that determines whether a picture will come out as black and white or colored.
(4) Viewfinder: This is a part of the Camera that helps us decide which object we want to photograph. It helps us point the camera in the correct direction and indicates what will or will not appear in the final photograph. Viewfinders are of two types: (1) Those that work independent of the lens, known as aim-and -shoot cameras; (2) Those that show exactly what the lens is seeing, found in SLR (Single Lens Reflex) cameras.
(5) Shutter: The shutter determines how long the film is exposed to light or to the image coming from the lens. Shutters are of two types: the one located just behind the lens, called the leaf shutter; the second type is located in front of the film plane, it's called the focal plane shutter. The shutter consists of two metal sheets or "curtains" which remain shut or closed when the camera is not in use. But when the shutter release button is depressed, one of these curtains slide open to allow the image from the lens to hit the film. After a brief moment, the second metal sheet of curtain will slide in to close the opening. The interval between the opening and closing depends on the speed we selected using the shutter speed knob.
(6) Aperture: This is an opening, or hole, at the center of the lens. The function is to cause images to be brightened or dimmed uniformly. This is achieved by increasing or reducing the size of the hole, using a knob called the Aperture Ring. When the opening is enlarged, more light passes through the lens, causing the picture to brighten. Conversely when the opening reduces, less light is let in, thus dimming the image or picture.
(7) Flash Shoe (or Accessory Jack): This is the hook to which one may attach a flash, if one chooses to use a flash and the camera supports it. This accessory is located just above the Viewfinder.
(8) Focusing Ring: When we are looking through the Viewfinder, it is the Focusing Ring that is used to bring the object into focus. It is more like an adjuster.
(9) Film Cavity: This is the location where the roll of film is placed in the camera. This cavity is secured from light. It is a sort of dark chamber whose job is to ensure that the only light reaching the film is the one coming through the lens, and even then only when the shutter is open. This is important since the film cannot differentiate between the light coming from the lens and the one coming from other sources. Without this cavity lights from the surrounding area would easily hit the film and distort the picture quality.
(10) Film Rewind Knob: This knob is used to return all the exposed roll of film back into their casing. This must first be done before removing the exposed film from the camera; otherwise the negative will be ruined! Some modern cameras perform this function automatically once we've taken the last exposure.
Summary: A Camera helps us preserve memories. Understanding how the various parts of this devise work will help us get the best from our Cameras.
The Parts of a Camera and Their FunctionsAvailable Stores
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Good wildlife camera equipment on safari can make the difference between pictures you will be proud to show your friends and family when you get back and ones where it's difficult to figure out exactly what you were photographing because it's only a fuzzy black dot surrounded by green vegetation.
I take wildlife photographs for a living and I have had to quickly figure out what the best cameras and lenses are to get the job done effectively.
Digital or Film - Which is better for a safari?
Wild animals are very unpredictable. That's one aspect of safari photography that makes it so exciting because you never know what you are going to get but this also means that the number of pictures you need to take to get a keeper increases.
And if you use film that can become very expensive whereas with a digital wildlife camera you can take as many as you want and then just delete the ones where the lion has ducked behind a bush, the cheetah has blurred because the autofocus locked onto a twig in front of it and the exposure of the hippo was way off because of the reflected sunlight in the water.
You can also make consistent use of bracketing to get the perfect exposures without worrying about cost or running out of film which can be a problem in certain remote areas of Africa where safaris take place.
So more is better in this case but what about quality? The fact is that digital quality is fast catching up to film unless you fall into the professional category and are going to be selling your safari pictures or entering them into competitions. In that case it might be better to stick to film because the trained eye will be able to spot the difference but in most other cases digital quality is more than adequate.
Digital also gives you valuable feedback while you are still on safari so that you can try and improve on that elephant picture with the ear cut off the next day. You also have a lot more control over the final product because you can use software like Photoshop to enhance and fine tune your pictures.
Digital SLR or Compact Wildlife Camera
A safari is the dream trip of a lifetime and it's a great opportunity to get some fantastic wildlife pictures but it's not necessary to buy the latest and greatest digital SLR and lenses to get them unless you are planning to take nature pictures for a living or are a serious photography enthusiast and are going to make regular use of the camera and lenses after the safari anyway.
The cost of a digital SLR wildlife camera is high compared to a compact but that is only half the story. The lenses that you need to purchase for decent wildlife photography often cost more than the camera itself making it a very expensive business indeed.
And a bulky camera body and multiple interchangeable lenses do add to the weight of your luggage and the inconvenience of carrying everything around with you.
Digital compact cameras on the other hand are not extremely expensive and the results that you can obtain from them are almost on a par with a digital SLR camera and you don't have to worry about any additional lenses if the compact you buy has a decent zoom covering the range from 80mm to about 300mm. There are a few of them on the market that do have lenses like this and the range of the zooms increase every year.
And compact cameras live up to their name by being relatively small and light and one lens means no additional weight or carrying and no time wasted changing to another lens to suit the situation.
The Best SLR Digital Wildlife Camera for Nature Photography
If you have decided to go with a digital SLR then by all accounts the best one to purchase for wildlife photography at the moment is the Canon EOS 20D due to the blinding speed of its shutter release (near instantaneous) and its continuous shooting speed of 5 frames per second to a maximum burst depth of twenty three frames. It also powers up in next to no time at all.
This wildlife camera is as fast as you will ever need to freeze wildlife action and get the picture in the can before the animal moves off into the undergrowth.
There are other SLR cameras that are nearly as good like the Nikon D70 and the Pentax ist D so take a look at them too before making a decision.
The Best Compact Digital Wildlife Camera for Nature Photography
Canon comes up trumps again in the compact camera category with the Canon Powershot S2 IS. The factor that makes this camera ideal for safari wildlife photography is its huge 12X optical zoom lens (36 - 432mm equivalent) with a built in image stabiliser which cuts down on blur when using such a massive zoom lens.
A 5 megapixal sensor is more than enough to produce stunning safari images and as long as you can live with a slight shutter release lag and power up delay this compact wildlife camera is perfect for a safari trip.
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