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Difference between revisions of "Taking Pictures with Different Cameras"
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Taking Pictures with Different Cameras (view source)
Revision as of 19:37, 3 September 2023
, 19:37, 3 September 2023→Lenses, Magnification (zoom factor, focal length)
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All cameras no matter their type, have a lens system that allows them to capture images. Smartphone cameras have mostly fixed lenses, while professional cameras have removable lenses, giving them the best flexibility but also making them highly expensive. Lenses can be characterized by focal length, aperture, distortion, astigmatism and many other physical properties. For most users, however, the focal length is the single most important factor. Note that the focal length is a way to measure the distance at which a lens focuses light towards an imaginary 35mm film or sensor. | All cameras no matter their type, have a lens system that allows them to capture images. Smartphone cameras have mostly fixed lenses, while professional cameras have removable lenses, giving them the best flexibility but also making them highly expensive. Lenses can be characterized by focal length, aperture, distortion, astigmatism and many other physical properties. For most users, however, the focal length is the single most important factor. Note that the focal length is a way to measure the distance at which a lens focuses light towards an imaginary 35mm film or sensor. | ||
While professional photographers discuss about their optics as having | While professional photographers discuss about their optics as commonly having 18mm to 55mm focal lengths, hobby photographers use 1x, 4x, 8x, or zoom factor properties. As this material is aimed more at beginners and semiprofessional users, the zoom factor will be used instead. | ||
===The magnification or zoom factor=== | ===The magnification or zoom factor=== | ||
When operating in the default mode, all cameras have a 1X or no magnification factor. This allows a camera to take a picture that is close to what our eyes perceive. Our eyes also have a lens, although our lens is extremely flexible compared to our cameras. In order to take a wider picture than our eyes see, such as for a panorama, you need less than | When operating in the default mode, all cameras have a 1X or no magnification factor. This allows a camera to take a picture that is close to what our eyes perceive. Our eyes also have a lens, although our lens is extremely flexible compared to our cameras. In order to take a wider picture than our eyes see, such as for a panorama, you need less than 1x zoom factor, while for closeup pictures, such as on subjects at events, pictured from a distance higher than 50 meters, you need at least 8x to 16x zoom factors to end up with usable pictures. This is why you need at least 4x zoom factor for decent amateur or hobby results, even on smartphone cameras. | ||
Most consumer and semi-professional cameras will advertise the zoom factor in two ways: an optical one and a digital one. The optical zoom factor is the most important and the single definite argument to make a device more flexible. A good camera should be able to accommodate high zoom factors although this will also make it more expensive, as lens systems that are able to achieve such results are more complex to manufacture and configure. Digital zoom factor is created by applying various post-processing techniques, leading to slightly more blurred images, as you would create if your image would be stretched or zoomed in your image editor. There are various ways in which a camera signals transitioning from an optical to a digital zoom, and you need to avoid going over the known zooom factor limitations of your current lens. | Most consumer and semi-professional cameras will advertise the zoom factor in two ways: an optical one and a digital one. The optical zoom factor is the most important and the single definite argument to make a device more flexible. A good camera should be able to accommodate high zoom factors although this will also make it more expensive, as lens systems that are able to achieve such results are more complex to manufacture and configure. Digital zoom factor is created by applying various post-processing techniques, leading to slightly more blurred images, as you would create if your image would be stretched or zoomed in your image editor. There are various ways in which a camera signals transitioning from an optical to a digital zoom, and you need to avoid going over the known zooom factor limitations of your current lens. | ||
It is advisable to observe that the higher your optical zoom factor or lens focal length, the more your camera will be prone to suffer from the slightest movement or instability. When creating closeup pictures, it is | It is advisable to observe that the higher your optical zoom factor or lens focal length is, the more your camera will be prone to suffer from the slightest movement or instability. When creating closeup pictures, it is good to have an extremely steady hand but it is much better to capture images using tripods and stands. Professional cameras have the advantage of high variety of lens systems that are tailored to any photo, from closeups to long distance or telephoto lenses. They can also be used on different cameras, which means if the camera has the same mounting system it can be easily used on your new one. | ||
<code>''Get used to different lenses and zoom factors, but avoid ever using digital zoom or higher than optical zoom magnifications while taking pictures, to avoid reducing image clarity. Use tripods and stands to have steady shots at closeup captures.''</code> | <code>''Get used to different lenses and zoom factors, but avoid ever using digital zoom or higher than optical zoom magnifications while taking pictures, to avoid reducing image clarity. Use tripods and stands to have steady shots at closeup captures.''</code> | ||