Evaluation: 
Conclusion: THE SD 10 excellent muti purpose /Infared Camera
Review: Great Camera with kit lenses that far surpass Nikon Kit lenses. The Foveon censor should not be compared to standard CMOS ccd's This is a whole new way to get quality Photos. The camera shoots in raw but can also be saved using SIGMA PRO at double the file size .You would have to buy genuine fractals software to accomplish what you get out of the box.
Another huge plus for me is the several hundred dollars I saved not converting my Nikon digital to a dedicated infared camera. Because with the sd10 you can easily remocve the hot mirror and take some infared shots put it back and continue with regular shots.Try this with any other camera and you will void your warranty . This can not be done with the SD9
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Evaluation:
Conclusion: Excellent camera. Megapixels explained.
Review: Typical digital cameras have what is called a Bayer sensor. The Sigma has a Foveon sensor. Here is an explanation that may help. With my Sigma SD10 I am able to print crystal clear 11 x 14 prints..can't do that with a 3 mega pixel camera. That is what some want to say the SD10 is because of the 3 layered Foveon Sensor! The pictures and color clarity of the prints are gorgeous.
EXPLANATION:
8mps (Bayer) sensors only have 2m Red and 2m Blue sensors, (and even only 4m Green).
Compared to 4.5 Red and 4.5 Blue sensors and 4.5m Green sensors in the Foveon. So a Foveon exceeds the conventional 8mps even in green, and more than doubles the resolution in Red / Blue.
Even a 10mps Bayer only has 2.5m Red and 2.5 Blue sensors.
It is interesting to observe that it would actually take a 18mps Bayer to have the same number of Red & Blue sensors as the 4.5 (x3) Foveon.
So the FACT is that every time you hear someone say that Foveon is "lying" .... remember that Bayer also have been lying all the time since 2/3 of their output is (educated) GUESSES from various interpolation schemes.
Foveon does no "interpolation", no "guesses".
This is why the SD10 still rates so highly even compared to 10 mega pixel sensor camera which are really no higher than 5 mega pixel green and are still lower in red and blue mega pixels than the foveon. Go Figure.
As soon as the Sigma SD14 is released I am going to purchase it.
Evaluation:
Conclusion: Pro Camera
Review: A few things about this camera: I have been using it in pro work for almost two years, and it is just that, a pro camera. It is bare bones. No toys that you will find on many larger names. I, personaly, don't miss those toys (maybe I would like a small popup fill flash every now and then...) so long as you don't mind or are already hauling a full bag of toys along with you. I have the TTL flash made for the camera by Sigma, and its 'ok' with some post editing. Good reach and power, but will sometimes not talk to camera and need to restarted.
Because of it being a stripped down body, I have had better battery life and easy use of the few functions that the camera does have. I shoot this camera on location and in the studio with an IR strobe setup on all manual with great results.
I am still using the kit lenses and for my work, they cover 95% of my shots, and I have other cameras with specialty lenses if needed. Then lenses are not great quality, and I do have a spot or two that seems to be on the CCD. Clone tool.
The files that come out of the camera need work. As do all digital cameras, but this more then others I use. Now, again, I don't mind, because the results you get after the editing and the power you have with the x3f files is great. This is the first time I have ever used any software other then PS to edit my work, the Sigma PhotoPro that ships with the camera is a great piece of software.
There has been talk of it, and I cant wait for the new camera in this line, I will buy the frist one into my camera shop and still shoot the SD10.
Evaluation:
Conclusion: A JAPANESE WORK OF ART!!!!!!!
Review: I WANT TO WRITE A REVIEW ABOUT THIS CAMERA BECAUSE I BUY IT A FEW DAYS AGO AND I WANT TO TELL YOU THE REASONS OF THIS PURCASE.
FIRST OF ALL I WENT TO THE MARKETS AND I SEE ALL THE D-SLRS WITH THE PRICE BETWEEN 900-1500EUROS,AND I SAW AT FIRST, THE MOST CAMERAS WHERE MADE IN (THAILAND,CHINA BUT NOT JAPAN)AND ITS VERY IMPORTAND TO BE MADE IN JAPAN BECAUSE SIGMA SD 10 IS.BECAUSE WHEN I GIVE 1400EUROS TO BUY A SERIOUS CAMERA AN SLR I DEMANT TO BE MADE IN JAPAN.SECOND, ALL THE SLRS IN THIS PRICE ARE SMALLER AND LIGHTER MAYBE THE MOST EXPENSIVE MODELS OF NIKON AND CANON ARE BIGGER AND HEAVYER BUT I DONT HAVE 4000 AND UP EUROS TO GIVE!THE PICTURES IN SUNLIGHT ARE GREAT WITH FOVEON SENSOR AND THE CAMERA IT SELF VERY EASY TO USE.TAKE TO YOUR HANDS FOR EXABLE A NIKON D-70 AND SIGMA SD 10 AND YOU WILL UNDERSTAND THE DIFERENCE!SORRY MY ENGLISH ARE NOT TO GOOD!
Evaluation: 
Conclusion: This camera is past it's prime
Review: The review "A great camera with a few drawbacks, February 26, 2004 Reviewer: A customer (St. Paul, MN USA)" is exactly what I would have written a couple of years ago when I first bought this camera. In the right conditions, especially landscape and close up photography you can produce some really spectacular images. Indoor family snapshots with this camera are no better than average, but never-the-less adequate. Overall I got some great use out of the camera.
The problem is that the world has passed this camera by. Cameras in the same price range offer superior images in a broader range of conditions with none of Sigma's drawbacks. Besides those mentioned by the other viewer (poor low light performance, mediocre lenses if you buy the kit), the fit and finish of the camera isn't up to the standards of first tier manufacturers. Documentation is poor. The camera is highly susceptible to vibration, so it takes some practice to learn how to take sharp images without a tripod in less well lit situations. All those quirks could be forgiven if it were not for one fatal flaw: the image sensor is extraordinarily susceptible to dust and debris whether it finds its way inside the camera or results from small bits of the shutter mechanism. Sooner or later you will have this problem if you buy this camera. The aficionados who all hang out at the dpreview forum seem less bothered by this than I do -- they become experts at using sensor brushes and cloning out spots with Adobe Photoshop CS2. My problem was a little worst than usual and has been difficult to fix. It has taken 4 repair shops. #3 was the Sigma factory in NY -- nice folks, but totally incompetent.
Overall I liken this camera to a vintage British roadster. It has some distinctive qualities that keep the fan clubs alive, but the world has moved well past it. You can buy superior performing cameras in the same price range like the Canon 20D with none of the drawbacks. My one star isn't because I'm not happy with the great images I produced with this camera, it is because I have lost patience with it and moved on to the better products that are now available.
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