Secrets of lens hoods Explained

You must have seen a flower like contraption in front of many fixed telephoto lenses. Sometimes u find it on normal lenses also, what do they do? If you had a chance to see a professional film camera at work, he had been a device like an elephant ear attached to the front of the camera, which are called matte box.

Lens Hoods

The main purpose of these devices is to prevent glare and lens flares. Now, coming to slowhoods, again, there are several variations. The basic variant is similar to a lampshade, which are used on lenses that work in the highest parts of the region telephoto zoom, because the viewing angle is restricted to these regions is usually cause vignetting blocking the visual field of the lens. Now a days, we have goals that can range from wide to telephoto regions. When using such an objective, we can not use normal because the hood, they will cause vignetting bycoming into the field of view of the lens.

Design Considerations

This problem is solved by using specially designed hood that are designed taking into account the vertical and horizontal viewing angle separately. Usually, the horizontal viewing angle is larger than the sun and the vertical angle from the vertical. This requires a design that is more like a petal or a flower. The hood for each lens must be designed with dueinto account the angles of the lens to prevent vignetting. Hood also serve to protect the lens from physical damage. Some Hood prosumer camera models have a supply of filters or fixed focal length multipliers on them. In the world of macro photography, shorter hoods are available that have rings of LEDs attached to them to enable a proper illumination of the subject at close range. These hoods are extremelyversatile and provide a better degree of freedom for the photographer. You may have your battery packs etc built on them, this can sometimes make the camera a bit 'more front heavy affecting stability.

Matte Box

These are used mainly in the segments of video stills in the segment, because they give the possibility to adjust the length of the fins. The fins are called French flags and the ability to adjust the French flags give them a greater degree of freedom andflexibility. They are used in still photography, but also less visible and are mostly confined to controlled environments like a studio, this is mainly due to the large size of the matte box. They also serve the purpose of providing a place to repair glass or plastic filters. matte box is used more in the video segment, because most are shot in controlled environments. matte box are sometimes made by the same photographer to suite their needs. There are production companiesthey also and above all, no camera or lens, as employees, have adjustable components.

A hybrid of the two has been developed that has controlled the petals on the hood, but did not do too well and went out of business now.

So when buying a lens for your digital SLR, you should buy because its hood, it gives you an advantage when shooting in direct sunlight. It will give you better contrast and yourPhotos will be more lively hood when you use it, prevents the angle of sunlight falling on 's your front lens elements. The picture below should explain it better.

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Canon XL2 3CCD MiniDV Camcorder w/20x Optical Zoom

Buy Canon XL2 3CCD MiniDV Camcorder w/20x Optical Zoom Order Today!

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Great Deal :
$3,639.95
Date Created :
Oct 21, 2010 10:34:05

Includes: XL2 Camcorder Body / Zoom Lens 20x zoom XL 5.4-108mm L IS / Color Viewfinder / Lithium Battery (for Auto-Date) / WL-D4000 Wireless Controller with 2 AAA Batteries (for Wireless Controller) / Lens Cap / Lens Dust Cap / Lens Hood / Lens Soft Case / Camcorder Dust Cap / CA-920 Compact Power Adapter and Adapter Holder / AC Cable / DC-920 DC Coupler / BP-930 Battery Pack (with Terminal Cover) / SS-1000 Shoulder Strap / STV-150 Stereo Video Cable / S-150 S-Video Cable / Microphone / XL2 and Lens Instruction manuals. Canon XL2 allows you to capture images closer to the finished product than ever before. Work that previously was limited to post-production can be simply and effectively accomplished in the field, in the camcorder. An Open Architecture philosophy, performance found only in much more expensive video cameras, Total Image Control and the solid foundation of Genuine Canon Optics, interchangeable lens capability and superb Canon image processing quality are united in the XL2. The XL2 brings a host of performance and convenience features to this class of video camcorder- benefits that can't be found in this combination on other high-end video cameras. They include: Canon Super Range Optical Image Stabilization in the standard lens; dual aspect ratios; various frame rate capabilities; image gamma and detail controls; skin detail control and convertible LCD display among others. Flourite Zoom Lens with Optical Image Stabilization SMPTE time code Custom Presets EIA standard (525 lines, 60 fields) NTSC color signal Dimensions - 8.9 x 8.7 x 19.5 in. / Weight (not including lens and battery pack) 5.3 lbs.

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Now, some individuals will try to convince you the XL2 is a poor Prosumer camcorder and will give seemingly good arguments. Don't buy into it.

For instance, a reviewer lower down this page complains the camera arrived broken and thus reviews it as a horrible machine. Unfortunately, this said reviewer doesn't talk about the actual functionality of an actual undamaged product, rather his own broken camera. Needless to say, his opinion is vastly slanted.

Another compares the XL2 to the DVX100 series from Panasonic and prefers the latter. He states the XL2 is too heavy and doesn't achieve the same calibre results as the cheaper Panasonic camcorder.

First of all, Canon has continued to revolutionize the photography industry for decades. They have proven themselves in both film and digital formats, for both still camera and camcorder. True, the XL2 lacks some features other more expensive cameras have (compare the JVC GU1000) but that's okay. And, yes, the camera has a very large body and is definately heavier than the Panasonic DVX100, but this is for specific reasons.

You have to first consider why you want a prosumer camcorder. If you just want to shoot hobby short films and want a professional look, I suggest you stick with either the higher-end Canon or JVC or Panasonic or even Sony (god forbid) consumer camcorders which run around 0. On the other hand, if you're considering becoming a serious hobbyist and don't intend to turn it into some sort of profession then Panasonic's DVX series is a good buy. The DVX 100's are cheaper, smaller, and somewhat easier to use. They are far more "point-and-shoot" than the other prosumer camcorders on the market. And they do a fairly good job.

Yet, the XL2 manages to not only hold its own, but also triumph over all other camcorders in the industry. First and foremost, the XL2 has the option to change lenses. This is a great boon for any serious shooter because attaching an actual lens to a camera gives far better results than slapping on some sort of adapter, which distort the image. Canon offers two lens types for the XL2: the included 20X zoom lens and a 3X wide angle lens; both are very expensive by themselves. But, with an optional Canon ring adapter running for 0, you could take your normal Canon SLR still camera lenses and attach them to the body and have them function perfectly. This allows the user a plethora of imaging options when shooting. Now, the normal user won't ever use anything other than the 20X zoom lens (a remarkable piece of machinery in itself), but that's just fine. You're buying the camera for its options and potentials as well as the physical benefits. Think of it like buying a BMW: you buy the car for its physical features you're likely to use (the radio, heated seats, leather, sunroof, etc.) but you also buy it for its safety and cumstomer service, things you'll hardly ever need. It just makes you feel good you have those options available.

Furthermore, the XL2 is a wonderful camera. It shoots beautifully without problems of any sort. Yes, it takes some getting used to, but that's because it has a lot of fuctions and options. The physical body design is simple enough that all the necessary shooting options (i.e., 24P, 30i, 60i, mic adjustments, white balance controls, presents, etc.) are easily accessible. The end product of a regular shoot is stunning. The Canon lens captures colors almost perfectly and the image stabilization built into the camera is a great help. The large body design (though awkward for some) is actually a benefit. The camera can be placed on the shoulder, giving greater stability to the shoot. You can't do that with a Panasonic or Sony.

No, the camera doesn't have a LCD screen on the side, but do you really need one? An LCD screen is not only distracting but also a battery hog, and takes precious room for control options or accessories that could other wise be placed where the LCD is built in. An LCD is great for consumer cameras because they're small and nobody wants to look through those one-inch viewfinders. But the XL2 has a very nice, large color viewfinder, and can be comfortably used with the camera on your shoulder. For those running hand-held shots you can flip part of the viewfinder open and can see a 1.5" LCD display. It's not dazzling or great, but it gets the job done. You're out in the field to get footage, not admire the LCD screen.

Finally, the XL2 offers XLR microphone inputs, a big bonus for people who want good sound in their video. You won't find this feature in either Panasonic or Sony prosumer camcorders.

In the end, Canon's XL2 is a beautiful camcorder. It offers you a lot more than you know at first glance, and delivers near-perfect results. The closest competitor would be the far more expensive (by at least 00) Panasonic GU1000, which is very similar to the XL2. If you're still not sure about the camera, I suggest you take a ride down over to your nearest Fry's to experiment. Or, you can visit the local TV station and ask them to tell you a little bit about why they're all using XL2's over the other camcorders on the market. No...seriously...they are.

Go figure.

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Digital Camera and Photography Terms Explained

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Want to buy a new digital camera, but I wonder what all these strange abbreviations and terms are and what they mean? Here are a few that I tried to explain in a simple manner.

AE Lock. This means exposure lock, and means that you can point to your argument, get a reading light, then swing the camera to set the picture, while this approach.

Aperture. Size of variable aperture of the lens which controls theamount of light passing through the lens to the sensor (CCD) and is usually expressed as f / number.The higher the f / number the smaller gap and lower the f / number is the greatest ' opening. also controls the depth of field.

Aperture Priority. This is a semi-manual approach in some cameras. The user sets the aperture for depth of field you want and the camera sets the shutter speed for correct exposure.

Auto Focus. Most digital cameras have aauto-focus mode that focuses the lens

Battery. Cameras are equipped with various types of batteries that power the camera. Each manufacturer tends to have their own variation on this and the batteries are not usually interchangeable between the cameras.

Bracketing. Bracketing shots where he is a photographer for the shots of the same scene three times or more at various exhibits. This can be done automatically on some cameras.

Card reader. A device that is used to connect thecomputer memory card

CCD or Charged Coupled Device. This refers to the chip inside the camera that is used to record the image information (on a digital camera is not the film).
The light hits the CCD when a photo is taken, then the analog CCD converts the information to digital.

Contrast. This is the difference between the lightest and darkest areas of a photo.

Depth of field. The distance between the nearest point and farthest point, thatis sharp and in focus. This varies with aperture setting. A small aperture will give more depth of field of a large opening.

Digital zoom. Some cameras will provide digital zoom which really means that "zoom" in the middle of the image and enlarges the pixels. This causes the "noise" or low resolution. The optical zoom is far superior.

DPI Dots per inch. Printers define the sharpness of an image by DPI. A figure of 1200 dpi or higher is required to printphotographs.

Exposure. The exhibition is a combination of how long the shutter is open and how the opening is wide.

EXIF. The exchangeable image file. This is used by cameras to record the data of a hit as the date, time taken, exposure etc. that can be read at times the camera or in software. This is useful to know what was happening when a photo was taken.

Exposure control. Check the settings of exposure through the shutter speed and aperture is important for seriousphotographers. cheapest digital cameras only shoot in automatic mode. If you think you might want to take photography more seriously at some point this should be considered.

Focal length length.Focal describes the magnification of the lens. The greater the focal length, the greater the magnification.

F-Stop (of / or number of stops). The size of the iris that allows light into the camera

Histogram.A histogram is a graph showing the imagetones or a graph of brightness. It can be used to control the exposure of a shot to see if you need to adjust and shoot again.

JPEG (Joint Photographic Experts Group). A format that allows the camera to squeeze a large picture in a small amount of memory. This is the most common system used by digital cameras

LCD Liquid Crystal Display. Most digital cameras have a screen on the back of the camera that can be used for viewing pictures, or sometimes as aviewfinder. A heavy user of battery power!

Macro.This is the camera mode to take close-ups.

manual mode. This is on the high-end cameras and is used by advanced photographers as it gives full control of shutter speed and aperture.

Megapixel. This is a million pixels and able to describe the ability of the sensor. Megapixel define the quality of your image. More megapixels means a clearer picture and sharper or that can be enlarged without losingquality.

Card.The majority of memory to store images taken on digital camera memory cards that can be removed and images transferred to your computer. The cards come in various shapes and sizes but they all do the same work.

Memory Stick. Memory Stick is a removable flash memory card format, launched by Sony in October 1998 and is also used generally to describe the whole family of Memory Sticks.

Optical zoom. This is a true zoom it approaches the subject withoutNavigation with image magnification. E 'preferable and superior to digital zoom. It is advisable to arrive at least 3x optical zoom.

Pictbridge. PictBridge is a technology standard that allows direct transfer of images from a camera to a compatible printer, bypassing the computer.

Pixels. A pixel, ie element, is the basic component or block the construction of a digital image and can have color and tone.
There may be several million "building blocks" in aimage.

RAW. The name is to identify virtually raw data (did not have the internal processing by the camera) image file format.

Resolution. Expressed as a measure of image size or pixels (megapixels) or dots per inch on size of a printed image that there are more pixels in the image will be a sharper image. This is usually referred to as, for example, 1200 x 1800, which relates height and width.

Priority. This is a semi-manual mode and the opposite ofaperture priority.
The photographer selects the shutter speed and the camera sets the correct aperture for the conditions.
Useful for action shots or the need to blur shots.

SLR. Single Lens Reflex is a camera that has a mirror that reflects the image and then on a pentaprism viewfinder screen. This means that you see what the camera sees and is useful for accurately frame your shots.
The mirror reflected out of the way when you takethe image.

Secure Digital (SD) is a flash memory card format developed for use in portable devices.

CCD.An sensor or computer chip, which contains light or light-sensitive pixels and recording the image when you take a picture.

Shutter speed. The shutter speed as it opens and close the passage of light onto the sensor. E 'ie1/60 expressed as a fraction of a second, 1 / 250

TIFF Tagged Image File Format. TIFF is a format of image file that does not lose anyquality when it is saved and compressed.

Tripod. If you are taking pictures of landscape or portrait of a tripod is essential for clear, sharp images in order to reduce camera shake and image blur.

USB. Universal Serial Bus. This is a standard interface on all computer accessories that can be connected to the computer while it is on.

I hope this is helpful!

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Get Some New Perspective - The fisheye lens

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Trying to add a little 'fun lens to your camera collection system? There are a number of single lens, which allows you to be creative and experiment with your shots. Among some of the most interesting types of fisheye lens is the lens - allowing you to see the world through a fish bowl.

A fisheye lens Canon's revolutionary

In a world first, Canon has just introduced the fisheye EF8-15mm f/4L zoom lens that works like a circularfull frame fisheye fisheye and full-frame sensor, interchangeable-lens SLR / DSLR cameras. The goal is now equipped with zoom capability, so you can approach the subject when you use the fisheye effect. With an 8-15mm optical zoom lens, this new lens is ideal for camera enthusiasts and professional photographers. Have fun with your pictures.

Fisheye tips

The fisheye lens offers a particularly wide field of view that allows you to enter morethe frame. The fisheye lens keeps the center of your shot in focus while the rest of the picture is distorted. It introduces an element concentric to your photos, which can add a little 'dramatic - impact or hilarious.

Of course not all players work with a fisheye. Keep in mind these points:

- Put more into the frame - the fisheye lens lets your put more structure as it has a 180 degree field of vision. This makes it convenient for group photos in interestingconfined spaces to ensure that nobody is left out.

- Create a master landscape shots on-location does not work with this effect, you will need an attractive first floor that can hold the attention of the viewer. The fisheye introduces an element concentric significantly warp the background to the point where it might be unrecognizable. The fisheye works particularly well when photographing pets and animals.

- Fun - if you do not use too much - when it comes to digitalcamera lens, the fisheye lens should be used relatively sparingly to avoid the effect of becoming boring to your visitors. If you are building a professional portfolio, one or two pictures with this lens will be more than enough.

Together with the recent release of the new-15mm f/4L EF8 fisheye lens, Canon has released a slew of other high-performance lenses for its professional range of digital SLR cameras including two super-telephoto lenses and extenders - browsethe range of digital camera lens on the website.

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Choose the right lens for advanced camera

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How to keep the camera lens are indispensable if you intend to take pictures that might otherwise be complex to evaluate. Technically shots will never challenge the very essence of aura or not captured through the lenses that are highly complicated categorically meant to take pictures like that. This could certainly hurt even experienced photographers, but the fact remains that if the right kind of lenses are not used or implemented, then the essence ofthe shot is lost in translation. The right kind of lens helps the photographer to get in the way and measure the object, then getting the right angle and clicking.

Have appropriate lens is also essential for their help in determining the effectiveness with which the person is transferred in the form of an image on film. There are a lot of camera lenses that require specific designs and simply do not have to accept any other. The objectives required for these camerasare very rare to find and the photographer has to do a lot of reconnaissance to get hold of them. Plenty of independent lens manufacturers have tried to take advantage of this weakness which requires suppliers to go out with quality lenses suitable for all cameras. Underwater photography requires macro lenses that are necessary to capture the movement of aquatic fish. As the water slows down the optical resolution, you can not do these shots with micro lenses whose imageresolution could be highly significant.

Having said that, while micro lenses work beautifully shot in the air. The smaller lens may be the highest resolution order. The focal length is also different objectives in a long time with many objectives that have identical lengths. The focal length determines the extent to which the shot can be intercepted, has a strong presence in the play of image size and clarity with which the end result will be released also depends on it. The lengthlens plays an important role in the exquisite photography. The shutter speed is a requirement that larger lenses such as shorter lenses do not need this. nature photography requires high resolution lenses like a wild animal that needs to be fired from a distance will be always in movement and lower resolution means that the shot does not come out clearly.

critical hits will always demand special lenses. Without these objectives, the shots will be very difficult to capture andprecise expression that is required of them will have a ferocious beating. Optical resolution not be the same, which ultimately leads to a situation where the shooting prove highly unsatisfactory. To prevent the occurrence of these failures, it is recommended that photographers picking the right type of lenses so that the spirit and the heart of photography is captured in the recovery that would not only image but a picture taken with great care, precision andbenevolence.

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