Are HD single lens reflex cameras the better HD camcorders?
A new generation of single lens reflex cameras with high
definition (HD) video recording function, such as the Canon 5D II,
Canon EOS 500D and Nikon D90, have well and truly shaken up the
camcorder world.
The
possibility of attaching any lens that you wish to the camera body via
the bayonet fitting was previously the preserve of the professional
scene only. In the case of commercially available camcorders, the lens
is inbuilt and cannot be removed. In digital single lens reflex
cameras, a much larger sensor chip is incorporated to provide perfect
image quality. Modern digital SLR cameras currently have between 10 and
21 million pixels in photo mode. In full HD video mode, a resolution of
only 2 million pixels is required. The photo format is reduced to video
resolution using a clever algorithm. Due to this reduction, the video
quality is increased considerably and, depending on the number of
pixels, this results in a reduction ratio in the order of between five
and ten to one. 5 to 10 pixels thus produce one video pixel. Through
this averaging, image flaws are reduced and the signal to noise ratio
is greatly increased. A large signal to noise ratio, with a maximum
memory depth for each colour channel, guarantees image quality with
plenty of contrast and low noise, even in difficult light conditions.
For use at the microscope, after the camera lens has been removed, the
microscope adapter is directly mounted to the camera body via a bayonet
fitting and the adapter projects the image directly onto the sensor
chip. Modern single lens reflex cameras have a Live View function,
which is especially important in microscopy as it allows the user to
precisely adjust the focal plane.
Conclusion: DSLR cameras with HD function are placing a great deal
of pressure on classical camcorders and will win a large portion of
their market share in future. The comparatively large sensor chip and
detachable lens make a DSLR camera almost unbeatable. For use at the
microscope, the DSLR camera is king.
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New LM Digital Adapter for: Canon EOS 1D X / Nikon D4 / Canon EOS 1D Mark IV / Canon EOS 60D / Canon EOS 600D / Sony NEX-5N / Nikon D3S / Canon EOS 5D Mark II / Canon EOS 7D / Canon EOS 550D / Rebel T2i / Kiss X4 Digital / Pentax K-5 / Sony Alpha 55 / Sony Alpha 580 / Sony NEX-C3 / Sony NEX-7 / Sony Alpha 65V / Sony Alpha 77V / Nikon D3x / Canon EOS 1100D / Nikon D7000 / Sony Alpha 33 / Sony NEX-5 / Sony NEX-3 / Sony Alpha 35 / Olympus E-5 / Pentax K-r / Canon EOS 1D Mark III / Nikon D5100 / Nikon D700 / Nikon D3 / Panasonic Lumix DMC-GX1 / Olympus E-30 / Olympus E-3 / Olympus E-620 / Canon EOS 1Ds Mark III / Canon EOS 500D / Digital Rebel T1i / Sony NEX VG10 / Olympus E-600 / Nikon D300S / Panasonic Lumix DMC-G2 / Pentax K-x /
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