Why buy/use a digital SLR camera?
- flexibility
- speed
- manual control
- to take your photographic possibilities beyond the limitations of “point and shoot”
- better inherent image quality because of larger imaging sensors and more sophisticated exposure meters and autofocus systems
What is a DSLR camera and how is it different from other types of digital cameras?
DSLR = digital single lens reflex. An internal mirror reflects the view directly from the photographic lens into the viewfinder. When the button is pressed to take a photo, this mirror is instantly pulled upward (this is the “clicking” or “tapping” noise you hear) and out of the way of the shutter, which slides open to expose the imaging sensor (the digital “film”). Because you see directly through the photographic lens, there is no need for a second “viewing” lens (as with older camera designs), thus – single lens reflex.
The SLR design is superior to other designs because it allows the photographer to see through the viewfinder exactly what is seen through the lens and what will be “seen” by the imaging sensor. When looking through the viewfinder of non-SLR cameras, the image seen is not exactly the same that the imaging sensor or film “sees”.
Point-n-shoot digital cameras have electronic LCD viewing screens at the rear of the camera that show a digital representation of the view through the lens. But an SLR is still the only camera style that allows a real-time optical view through the photographic lens. This inherently allows for faster and more precise operation of an SLR camera over other types.
- flexibility
- speed
- manual control
- to take your photographic possibilities beyond the limitations of “point and shoot”
- better inherent image quality because of larger imaging sensors and more sophisticated exposure meters and autofocus systems
What is a DSLR camera and how is it different from other types of digital cameras?
DSLR = digital single lens reflex. An internal mirror reflects the view directly from the photographic lens into the viewfinder. When the button is pressed to take a photo, this mirror is instantly pulled upward (this is the “clicking” or “tapping” noise you hear) and out of the way of the shutter, which slides open to expose the imaging sensor (the digital “film”). Because you see directly through the photographic lens, there is no need for a second “viewing” lens (as with older camera designs), thus – single lens reflex.
The SLR design is superior to other designs because it allows the photographer to see through the viewfinder exactly what is seen through the lens and what will be “seen” by the imaging sensor. When looking through the viewfinder of non-SLR cameras, the image seen is not exactly the same that the imaging sensor or film “sees”.
Point-n-shoot digital cameras have electronic LCD viewing screens at the rear of the camera that show a digital representation of the view through the lens. But an SLR is still the only camera style that allows a real-time optical view through the photographic lens. This inherently allows for faster and more precise operation of an SLR camera over other types.
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| SLR System |
SLR System - How does it look
Cross-section view of SLR system:
1: Front-mount lens (four-element Tessar design)
2: Reflex mirror at 45-degree angle
3: Focal plane shutter
4: Film or sensor
5: Focusing screen
6: Condenser lens
7: Optical glass pentaprism (or pentamirror)
8: Eyepiece (can have diopter correction ability)
Cross-section view of SLR system:
1: Front-mount lens (four-element Tessar design)
2: Reflex mirror at 45-degree angle
3: Focal plane shutter
4: Film or sensor
5: Focusing screen
6: Condenser lens
7: Optical glass pentaprism (or pentamirror)
8: Eyepiece (can have diopter correction ability)
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