Friday, February 28, 2014

Posted by Unknown |

Digital cameras have become very advanced devices. The digital imaging sensor on most digital cameras is somewhat smaller in size than the old 35mm standard film plate. This sensor is responsible for most of the noise, or random speckles, created when taking a picture.

Instructions

    1

    Read through the camera's user manual to determine if noise is a common occurrence for that particular model camera. Doing the research before making the purchase is the best defense against noise; many models simply handle noise better than others.

    2

    Buy a digital SLR camera that incorporates a full-frame imaging sensor. The larger the imaging sensor, the better the light is distributed across the imaging area producing sharper, crisper images that exhibit little or no noise interference. Full frame SLRs are the most expensive SLR cameras sold.

    3

    Use the camera's on-board noise reduction feature, if equipped. Most manufacturers offer some form of in-camera software to handle unwanted noise, or the camera reduces noise as it records images.

    4

    Reduce the camera's ISO, or film speed. On digital cameras this number is only representative of film speed and the higher the ISO on many cameras, the higher the digital noise within the image.

    5

    Purchase noise reduction software, such as Noise Ninja or Neat Image. Try out a few of these to determine which best reduces noise in the SLR photographs.


Digital cameras have become very advanced devices.

Enhance your photography skill,The Top Secret Photography Techniques

. The digital imaging sensor on most digital cameras is somewhat smaller in size than the old 35mm standard film plate. This sensor is responsible for most of the noise, or random speckles, created when taking a picture.

Instructions

    1

    Read through the camera's user manual to determine if noise is a common occurrence for that particular model camera. Doing the research before making the purchase is the best defense against noise; many models simply handle noise better than others.

    2

    Buy a digital SLR camera that incorporates a full-frame imaging sensor. The larger the imaging sensor, the better the light is distributed across the imaging area producing sharper, crisper images that exhibit little or no noise interference. Full frame SLRs are the most expensive SLR cameras sold.

    3

    Use the camera's on-board noise reduction feature, if equipped. Most manufacturers offer some form of in-camera software to handle unwanted noise, or the camera reduces noise as it records images.

    4

    Reduce the camera's ISO, or film speed. On digital cameras this number is only representative of film speed and the higher the ISO on many cameras, the higher the digital noise within the image.

    5

    Purchase noise reduction software, such as Noise Ninja or Neat Image. Try out a few of these to determine which best reduces noise in the SLR photographs.



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Posted by Unknown |

Photography is a beautiful art that can capture not only the world around us, but also how the photographer sees the world. As an art form, it is also immediate to children, who are able to relate to photographed images of easily recognizable subjects. In this article you'll find information about how to teach photography to children.

Instructions

    1

    Decide what camera to use when you teach photography to children. Each type of camera has its pros and cons. Disposable cameras are simple to use, but there's the added cost for developing the film. Digital cameras are more difficult to use, but they can be developed right on your computer and the pictures easily printed.

    2

    Show your child the basics of how to operate the camera. She may even need to know what button to push, and where to place her hands, so that she is not blocking the viewfinder. Teach her the importance of light, such as making sure there's enough light to see what she is photographing. Teach her to have the light in front of the subject. Tell her not to point her camera into the sun, as the sun will blot out any image. If you are using a digital camera, you may need to teach your child to focus the camera.

    3

    Show your child books of photography by famous photographers, including those that feature photos of children. Fine examples are "In Our Time: The World as Seen by Magnum Photographers," Anne Geddes' "Be Gentle with the Young," or any by Ansel Adams. Point out the use of light in the books, and how the photographer centered the subject in the photographs.

    4

    Bring your child to exhibitions of photography. Fine examples of exhibitions are Andr Kertsz: On Reading, which can also be viewed online, or Yousuf Karsh: Regarding Heroes at the Art Institute of Chicago. Look for local exhibits by contacting studios or museums in your area. Ask the children to comment on the use of light and how the photographers created their images.

    5

    Let your child be hands-on with the camera. Encourage him to photograph whatever subjects appeal to him. Answer any of his questions, and be on hand to assist.

    6

    Print your child's photographs, and display them for her to see. Affirm all your child's efforts. You can even hold photo contests or hold an exhibition, where you can invite family and friends.


Photography is a beautiful art that can capture not only the world around us, but also how the photographer sees the world. As an art form, it is also immediate to children, who are able to relate to photographed images of easily recognizable subjects. In this article you'll find information about how to teach photography to children.

Instructions

    1

    Decide what camera to use when you teach photography to children. Each type of camera has its pros and cons. Disposable cameras are simple to use, but there's the added cost for developing the film. Digital cameras are more difficult to use, but they can be developed right on your computer and the pictures easily printed.

    2

    Show your child the basics of how to operate the camera. She may even need to know what button to push, and where to place her hands, so that she is not blocking the viewfinder. Teach her the importance of light, such as making sure there's enough light to see what she is photographing. Teach her to have the light in front of the subject. Tell her not to point her camera into the sun, as the sun will blot out any image. If you are using a digital camera, you may need to teach your child to focus the camera.

    3

    Show your child books of photography by famous photographers, including those that feature photos of children. Fine examples are "In Our Time: The World as Seen by Magnum Photographers," Anne Geddes' "Be Gentle with the Young," or any by Ansel Adams. Point out the use of light in the books, and how the photographer centered the subject in the photographs.

    4

    Bring your child to exhibitions of photography. Fine examples of exhibitions are Andr Kertsz: On Reading, which can also be viewed online, or Yousuf Karsh: Regarding Heroes at the Art Institute of Chicago.

    Enhance your photography skill,The Top Secret Photography Techniques

    . Look for local exhibits by contacting studios or museums in your area. Ask the children to comment on the use of light and how the photographers created their images.

    5

    Let your child be hands-on with the camera. Encourage him to photograph whatever subjects appeal to him. Answer any of his questions, and be on hand to assist.

    6

    Print your child's photographs, and display them for her to see. Affirm all your child's efforts. You can even hold photo contests or hold an exhibition, where you can invite family and friends.



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Wednesday, February 26, 2014

Posted by Unknown |
How to Edit Night Sky Pictures

From one point of view, photography consists of the interplay between light and shadow. Light and shadow not only direct the viewer's eye, but they can also highlight and diminish aspects of the image. Night photography in particular presents this challenge because a night sky essentially consists of spots of light in a field of shadow. Knowing how to properly balance the interplay of the light and shadow and the constituent elements in the image can help you successfully edit night sky pictures.

Instructions

    1

    Open the image you wish to edit with photo editing software.

    2

    Select the "Color Balance" palette or create a "Color Balance" layer.

    3

    Adjust the values of the color balance palette until the image has the desired color balance. Generally, most photo editing software has sliders for adjusting cyan/red, magenta/green, yellow/blue and black/white values. You can emphasize a certain color or colors and diminish others by changing these values. Color balancing works even with black and white images and can significantly affect the balance of black, white and gray tones.

    4

    Select the "Brightness/Contrast" function or open a "Brightness/Contrast" layer.

    5

    Adjust the brightness/contrast values until the image has the desired balance of brightness and contrast. Higher contrast and lower brightness will increase the contrast of the stars and other bright objects against the sky. Lower contrast and higher brightness will brighten the sky and decrease the contrast of stars and other bright objects against the sky. Generally, high contrast helps clarify and intensify a night sky image.

    6

    Open a new layer, and select the "Brush" tool.

    7

    Click on the "Eyedropper Color Selection" tool, and select a neutral, dark color of the night sky.

    8

    Paint in any portions of the image that remain too bright after the brightness/contrast adjustment. Reflections from city lights often create an undesirable haze of light that detracts from the intensity of the night sky's darkness.

    9

    Adjust the opacity of the painted layer until the painted areas of the sky have the desired darkness.

    10

    Click on the "File" menu and select "Save." Enter the desired file name and click "Save" to save the file.


How to Edit Night Sky Pictures

From one point of view, photography consists of the interplay between light and shadow. Light and shadow not only direct the viewer's eye, but they can also highlight and diminish aspects of the image. Night photography in particular presents this challenge because a night sky essentially consists of spots of light in a field of shadow. Knowing how to properly balance the interplay of the light and shadow and the constituent elements in the image can help you successfully edit night sky pictures.

Instructions

    1

    Open the image you wish to edit with photo editing software.

    2

    Select the "Color Balance" palette or create a "Color Balance" layer.

    3

    Adjust the values of the color balance palette until the image has the desired color balance. Generally, most photo editing software has sliders for adjusting cyan/red, magenta/green, yellow/blue and black/white values. You can emphasize a certain color or colors and diminish others by changing these values. Color balancing works even with black and white images and can significantly affect the balance of black, white and gray tones.

    4

    Select the "Brightness/Contrast" function or open a "Brightness/Contrast" layer.

    5

    Adjust the brightness/contrast values until the image has the desired balance of brightness and contrast. Higher contrast and lower brightness will increase the contrast of the stars and other bright objects against the sky. Lower contrast and higher brightness will brighten the sky and decrease the contrast of stars and other bright objects against the sky. Generally, high contrast helps clarify and intensify a night sky image.

    6

    Open a new layer, and select the "Brush" tool.

    7

    Click on the "Eyedropper Color Selection" tool, and select a neutral, dark color of the night sky.

    8

    Paint in any portions of the image that remain too bright after the brightness/contrast adjustment. Reflections from city lights often create an undesirable haze of light that detracts from the intensity of the night sky's darkness.

    9

    Adjust the opacity of the painted layer until the painted areas of the sky have the desired darkness.

    10

    Click on the "File" menu and select "Save." Enter the desired file name and click "Save" to save the file.



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Posted by Unknown |
Digital Photography Aperture Tutorial

Apertures function the same in digital photography as in film photography. The aperture is the opening through which light can pass completely through your lens to the focal plane of your camera which holds your Charge Coupled Device (CCD) that captures a digital image. Aperture helps control exposure, depth of field, and the sharpness of your photos. Plus aperture can help you photograph in low light.

How is Aperture Notated?

    Aperture numbers are notated as the denominator of a fraction, therefore the lower the number of aperture, the larger the hole. For instance f2.8 is twice as wide as f4.0. Each of these increments is referred to as a stop. Whole aperture stops from f1 to f22 are as follows: f1, f1.2, f2, f2.8, f4, f5.6, f8, f11, f16, f22.

Setting Aperture

    On single lens reflex (SLR) cameras, or generally any camera without a fixed lens, there is a ring on the lens that allows you to select the aperture size. Typically, there are indicators for the different stops your lens supports.
    For permanently mounted lenses, you may be able to set your aperture in one of the menus of your camera, or it may simply be automatically controlled with no option for manual control.

Exposure

    The lower the aperture number, the wider the opening and the more light it lets in. Each whole aperture stop lets in twice as much light as the one before. For instance, f4 lets in twice as much light as f5.6.

Depth of Field

    Depth of field is how much of the area in front and behind the subject that is in focus. Wider (smaller number) apertures produce a narrow depth of field, or total area that is in focus. Narrower apertures (higher numbers) give you a greater depth of field, allowing more area in front and behind your subject to be in focus. A good rule of thumb is that the aperture number tells you how many people you could get in focus at a time. For instance, at f2.8 you can get about three people in focus and at f8 you can get eight people in focus.

Overall Sharpness

    Smaller apertures (higher numbers) use more of the center of the lens and less of the edge. The glass in the center of the lens generally produces the sharpest images. The smaller the aperture you use, the less of the edge you use. This will increase the overall sharpness of your images. A general rule of thumb is to shoot primarily not wider than within one or two stops of the widest aperture. For instance if you have an f2.8 lens, set the aperture to f4 or f5.6 to get sharper images.

Photographing in Low Light

    In low light, a wider aperture lets you capture images at a faster shutter speed. Smaller apertures can give you more sharpness, so it is critical to find the right aperture/shutter speed combination for your particular photo. The great advantage of digital cameras over film is that you can experiment without wasting film and you can check your results instantly. Try different aperture and shutter speed combinations and see which works best.


Digital Photography Aperture Tutorial

Apertures function the same in digital photography as in film photography. The aperture is the opening through which light can pass completely through your lens to the focal plane of your camera which holds your Charge Coupled Device (CCD) that captures a digital image. Aperture helps control exposure, depth of field, and the sharpness of your photos. Plus aperture can help you photograph in low light.

How is Aperture Notated?

    Aperture numbers are notated as the denominator of a fraction, therefore the lower the number of aperture, the larger the hole. For instance f2.8 is twice as wide as f4.0. Each of these increments is referred to as a stop. Whole aperture stops from f1 to f22 are as follows: f1, f1.2, f2, f2.8, f4, f5.6, f8, f11, f16, f22.

Setting Aperture

    On single lens reflex (SLR) cameras, or generally any camera without a fixed lens, there is a ring on the lens that allows you to select the aperture size. Typically, there are indicators for the different stops your lens supports.
    For permanently mounted lenses, you may be able to set your aperture in one of the menus of your camera, or it may simply be automatically controlled with no option for manual control.

Exposure

    The lower the aperture number, the wider the opening and the more light it lets in. Each whole aperture stop lets in twice as much light as the one before. For instance, f4 lets in twice as much light as f5.6.

Depth of Field

    Depth of field is how much of the area in front and behind the subject that is in focus. Wider (smaller number) apertures produce a narrow depth of field, or total area that is in focus. Narrower apertures (higher numbers) give you a greater depth of field, allowing more area in front and behind your subject to be in focus. A good rule of thumb is that the aperture number tells you how many people you could get in focus at a time. For instance, at f2.8 you can get about three people in focus and at f8 you can get eight people in focus.

Overall Sharpness

    Smaller apertures (higher numbers) use more of the center of the lens and less of the edge. The glass in the center of the lens generally produces the sharpest images. The smaller the aperture you use, the less of the edge you use. This will increase the overall sharpness of your images.

    Enhance your photography skill,The Top Secret Photography Techniques

    . A general rule of thumb is to shoot primarily not wider than within one or two stops of the widest aperture. For instance if you have an f2.8 lens, set the aperture to f4 or f5.6 to get sharper images.

Photographing in Low Light

    In low light, a wider aperture lets you capture images at a faster shutter speed. Smaller apertures can give you more sharpness, so it is critical to find the right aperture/shutter speed combination for your particular photo. The great advantage of digital cameras over film is that you can experiment without wasting film and you can check your results instantly. Try different aperture and shutter speed combinations and see which works best.



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    www.photoxels.com/tutorial_aperture.html

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    www.photoaxe.com/understanding-the-lens-focal-length-and-aperture

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