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SLR camera

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Many of the advantages of SLR cameras derive from viewing the scene through the taking lens. There is no [[parallax]] error, and exact focus can be confirmed by eye—otherwise hard for [[macro photography]] and when using [[telephoto lens]]es. The true [[depth of field]] may be seen by stopping down to the taking [[aperture]], possible on all but the cheapest cameras. Because of the SLR's versatility, most manufacturers have a vast range of lenses and accessories available. Only the [[Leica]] [[rangefinder camera]]s have a comparable system.
 
Many of the advantages of SLR cameras derive from viewing the scene through the taking lens. There is no [[parallax]] error, and exact focus can be confirmed by eye—otherwise hard for [[macro photography]] and when using [[telephoto lens]]es. The true [[depth of field]] may be seen by stopping down to the taking [[aperture]], possible on all but the cheapest cameras. Because of the SLR's versatility, most manufacturers have a vast range of lenses and accessories available. Only the [[Leica]] [[rangefinder camera]]s have a comparable system.
   
Compared to most fixed-lens compact cameras, the most commonly used and cheapest SLR lenses offer a wider aperture range and larger maximum aperture (typically f/1.4 to f/1.8 for a 50 mm lens). This allows photographs to be taken in lower light conditions without flash, and allows a narrower depth of field, which is useful for blurring the background behind the subject, which makes the subject stand out better. This is commonly used in [http://www.newtownphotographystudio.com.au/portrait-photography/ portrait photography].
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Compared to most fixed-lens compact cameras, the most commonly used and cheapest SLR lenses offer a wider aperture range and larger maximum aperture (typically f/1.4 to f/1.8 for a 50 mm lens). This allows photographs to be taken in lower light conditions without flash, and allows a narrower depth of field, which is useful for blurring the background behind the subject, which makes the subject stand out better. This is commonly used in portrait photography.
   
 
In the diagram the light path through the roof pentaprism is shown in simplified form. In fact an odd number of reflections are required to rectify the image on the ground glass screen. The first reflection from the moving mirror requires an additional three reflections inside the prism. Two only are shown.
 
In the diagram the light path through the roof pentaprism is shown in simplified form. In fact an odd number of reflections are required to rectify the image on the ground glass screen. The first reflection from the moving mirror requires an additional three reflections inside the prism. Two only are shown.
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== Notes ==
 
== Notes ==
 
{{Wikipedia|Single-lens_reflex_camera}}
 
{{Wikipedia|Single-lens_reflex_camera}}
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[[Category:Cameras]]
 
[[Category:Cameras]]
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