Canon 5D mark III comes with new sensor, improved 61 point AF system same as 1D-X and better video mode. Nikon D800 is a megapixel monster with limited ISO range and slow burst mode compared to new 5D mark II.
Megapixel: Both have same Fullframe sensor but Nikon D800 features 36.3 Megapixel sensor and 5D mark III comes with 22.3 Megapixel sensor, with large individual 6.25 µm pixels and canon 5D mark III has a much-improved S/N ratio resulting in better images from the base ISO.
AF system: Canon 5D mark III features better AF system with 61 point AF (up to 41 cross-type points) but limited up to f/5.6, the Nikon D800 has working AF at f/8 and comes with 51 point AF system .
ISO range: Nikon D800 you get limited standard ISO range up to 6400 only, canon 5D mark III offers standard ISO range up to 25600.
Continuous shooting: The canon new DIGIC+ image processor Working with two 4-channel A/D converter front-end processing circuits, and delivering speeds of up to 6.0 fps, Nikon D800 Continuous shooting speed is limited to 4 fps only.
Video: Canon offers both All-I and IPB compression, supports H.264/MPEG-4 AVC High Profile, and automatically splits files greater than 4GB (FAT specifications) for extended recording without interruption, No details available about Nikon D800 uncompressed HDMI output, Nikon D800 Max Video length is limited to 20 minutes only.
Conclusion:
Canon 5D Mark III recommended for videographers, professional action and sports photographers, photojournalist, Studio, commercial and still life photographers.
Nikon D800 is recommended for Studio, commercial and still life photographers.
Update @ March 24, 2012 High ISO Sensitivity test done at dcfever.com (chines website)
settings – Canon EOS 5D Mark III: EF 100mm f/2.8L Macro IS USM, f/8.0, AWB (Jpeg), the default of NR, the IS Off,
the Nikon D800, tripod shooting : AF-S VR Micro-Nikkor 105mm f/2.8 G IF-ED,, f/8.0, AWB (Jpeg), the default of NR, the VR Off tripod shooting
Nikon P510 (Nikon P510 at Amazon) is the only compact camera features 42X optical zoom with 16 MP BSI CMOS sensor, Now its time to see Nikon P510 in action
18 High-res Sample Images available in canon Europe server, images are available in serial order from 1 to 18, browse all the images by just changing the image number.
Invitation for the Sony presentation at March 15th is spotted by SAR reader David, New Sony Alpha A57 and Sony NEX-F3 is expected to arrive at March 15, 2012
Rumored Specification of Sony A57
16 megapixel ExmorHD sensor
100-16.000 ISO (up to 25.600 with MultiNR)
12fps
Same menu and focusing of the Sony A77
Swifel screen
No top LCD
No GPS
New battery grip
EVF (not as the A77/A65)
Canon 5D Mark III vs Canon 5D mark II, read the quick specification comparison review below.
New Sensor
Canon 5D Mark III comes with newly designed 22.3 megapixels Full Frame sensor and DIGIC 5+ image processor.
The new sensor captures 5784 x 3861 large individual 6.25 µm pixels and has a much-improved S/N ratio resulting in better images from the start. A new photodiode structure with an increased photoelectric conversion rate increases the sensor’s sensitivity by approximately 2 stops over previous models, meaning higher ISOs with the lowest noise of any EOS digital camera. And a 2-line 8-channel simultaneous signal readout means speeds of up to 6.0 fps (RAW + JPEG) are possible!
Image processor
With an increased 8-channel read out, the camera comfortably handles a maximum full resolution speed of up to 6fps in bursts of 18 RAW images or over 16,000 JPEGs.
The DIGIC 5+ Image Processor improves data processing performance and features new algorithms that promote greater noise reduction at higher ISOs. In addition to conventional image processing functions the DIGIC 5+ Image Processor offers real-time compensation for chromatic aberration in both still and motion images.
AF Points
The EOS 5D Mark III utilizes the same 61-point wide-area AF system as the flagship EOS-1D X, One of the most advanced AF systems currently available, it features an impressive 41 cross-type points and five dual cross-type points and f/4.0 lens support, providing unsurpassed accuracy across the frame. The customizable AF pre-sets introduced in the EOS-1D X are also available,
ISO Range
Canon 5D Mark III features ISO 100–25,600 standard sensitivity range, ISO can be expanded to L: 50, H1: 51200, H2 102400.
Movies
EOS HD Video with manual exposure control and multiple frame rates (1080: 30p (29.97) / 24p (23.976) / 25p, 720: 60p (59.94) / 50p, 480: 30p (29.97) / 25p with 4 GB automatic file partitioning (continuous recording time 29 minutes 59 seconds), selectable “All i-frame” or IPB compressions, embedded timecode, manual audio level control while recording, and headphone terminal.
The new 5D Mark III CMOS sensor’s new drive system significantly increases image processor performance, reducing color artifacts and moiré (a common problem that occurs in scenes with horizontal lines)
Overall Conclusion
The 5D mark III features new sensor, new image processor, better ISO range, Advance AF system and a bit longer battery life.
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