Digital Camera Reviews

Sigma DP1 digital cameras

Sigma DP1 for digital camera reviews
  In 2008, PMA08 show, Sigma has finally officially launched the industry and the majority of amateur photographers have long attention DP1 mass production model, and will soon release an official in the United Kingdom recommended retail price – £ 549 (about All 8410 yuan), of course, in the United States suggested retail price is slightly cheaper a little bit, 999 U.S. dollars (about 7170 yuan), in the Amazon, including external viewfinder DP1 and other accessories in your package price had already been a suitable Ma’s own main machine worth SD14 digital SLR in the entire history of digital cameras has passed, this high-level DC expensive than the price of the intermediate single-lens reflex inverted situation is rare, this also illustrates one aspect from Sigma their own position for the DP1. (Note: the previously mentioned high prices is the Sigma DP1 digital camera price in 2008, and now in 2010 the price had fallen by half, eager to buy friends can consider buying.)
  The origin and history of Sigma DP1
Sigma in the September 26, 2006 on display at the Photokina of DP1 concept machine, a time of four are scared that this is a Sigma was first introduced, a portable digital camera, but I am afraid that you might be interested in the focus or in the DP1 unprecedented design ideas. DP1 carrying a 135 equivalent to the actual focal length of 28mm focal length 16.6mm maximum aperture F4 fixed focus lens, which has issued non-replacement of portable digital camera lens is rare, and only the GRD/GRD2 Ricoh is also there is a long time before the Canon IXUS i series, several models using a fixed focus lens design. Sigma in an apparent attempt to maximize the provision of the best optical performance; DP1 Another Aspect is equipped with a one size 20.7×13.8mm of the Foveon X3 imaging sensors, X3 is different from our common CCD / CMOS, etc. mosaic-type chips, but a new light-sensitive chip design, in color has a very excessive and the level of a unique expression.
   First introduced in 2006, although the DP1 with the concept of machine production version will look like, but still has a slightly different appearance of more complex and interconnected to the surface, I believe that in the shell mold design will be more trouble and costly . Shutter, mode dial, power button, the location of other little changes, an increase of production version of a hot shoe interface, you can use a more powerful external flash.
   2006′s astonishing glimpse obviously difficult to satisfy the audience’s understanding of the urgent desire for the DP1. Meanwhile, rumors about it began to slowly spread up, optimists are coming out of what is listed in 2007 ah, the image quality of the amazing ah, while pessimists are coming out of Sigma to stop R & D, DP1 dismount of the class project , and finally to March 2007, when Sigma announced the appearance of fine-tuned over the DP1, be regarded as a slight put down some bad rumors, thus, DP1 looks basically finalized, and after the improvements are all around such as image processing chips, image processing algorithms like aspects of conducting. Time hurriedly rushed away, it also has not come back, but also quiet for more than six months after November 30, 2007, Sigma announced the company’s flagship consumer cameras, the latest research and development of DP1. It is reported that during the development of the DP1′s image processing program as the work of the state have been achieving the desired effects and the impact of the research and development work continues. It seems that the world holds of the DP1′s image quality with high expectations to make Sigma the company have not been negligent, be sure to have to do a fail-safe before the Sigma DP1 into volume production.
  Sigma DP1 uses the Sigma DSLR – SD14 same FOVEON X3 sensor, up to 14.06 million effective pixels, the output resolution of up to 2652 × 1768. It should also be the most proud of DP1 place. Other major hardware configuration and features are as follows:
1 – with a 16.6mm fixed focal lens, with FOVEON X3 sensor 1.7X conversion magnification, 35mm equivalent focal length equivalent to 28mm, maximum aperture of F4, recently focusing distance is 30cm.
2-9 point auto-focus system and an 8-segment metering system to support the global average metering, the central part of the metering and center-weighted metering.
3 – adoption and Fujitsu jointly developed the design of the TRUE image processing engine
4 – can store RAW and JPEG image formats.
5 – The maximum shutter speed of 1 / 4000 sec.
6 – support for aperture priority, shutter priority, full manual exposure and a variety of programs.
7-2.5 inch 230,000-pixel LCD, SD / SDHC card expansion of storage, body size of about 100 * 60 * 20mm.
  DP1 is equipped with a non-replacement of 16.6mm fixed focal lens, optical structure 6 5 groups, is equivalent to 135 focal length 28mm, maximum aperture of F4, the minimum aperture F11, recently focusing distance is 30cm. Can not replace the lens inside the portable digital camera with fixed focus lens is extremely rare, the most well-known that two of the course ought to GRD series, but limited to the CCD area is too small, GRD/GRD2 did not play out the rocket carrying the GR lens strength, In the resolution on the performance was flat, somewhat disappointing. The Sigma DP1 is equipped with a 14 million-pixel APS-format X3 sensor, coupled with Sigma in optical design skill has never been weaker, producing a similar EX 30/1.4, black, 105 micro, 150, and so a large number of micro – Friends of the excellent reputation in the shadow of the lens, we have reason to believe that DP1 bound to be able to bring us beyond the past performance of the image.
  On this lens, Sigma’s official did not mention a lot of technical details, but from the many proofs have been published in the point of view, the SIGMA lens  16.6mm resolution and distortion in the performance of both reached a near-perfect point, while in color and excessive level of respect, thanks to the help of X3, but also excellent surprise, it seems Sigma claims that “DP1 can get with SLR-like images,” certainly do not be bragging.
  Online spread rumors that  16.6 / 4 lens can be easily removed and replaced with Leica M mount, If so, then it is surely no better things, and there are a kind of games are played. However, beg the question: Even if I can be changing the card, the camera will not detect the lens of the action Mody? DP1 is the use of electronic shutter, while the Leica M is to use a mechanical shutter curtain, Changing Card mouth easy, installing a shutter up be difficult, and the electronic shutter and mechanical shutter how to synchronize? Read this point, there has been a little absurd in some of the ideas, since the DP1′s lens so easily removed, the Sigma and the other companies have reverse-engineered products, misdeeds, then the official Sigma Probably Could there really be a support for M bayonet that can be Replacement Lens Rangefinder it.
  DP1 high-ISO performance is very terrible, which is an X3 chip, there is a relationship between their own weaknesses, and determine, DP1′s ISO 800 basically no practical value.
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