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A Color Sensor Delivering Pictures with Unique Purity

The SIGMA DP's the Foveon X3
® direct image sensor utilizes the 
special properties of silicon, which 
is penetrated to different depths 
by different wavelengths of light, 
to successfully achieve full-color 
capture for the first time ever in 
a single-chip configuration. No 
color filter is required.

Since the Foveon X3® can 
capture all the color information 
in its three layers, the 
aforementioned late-stage color 
interpolation necessitated by the 
Bayer filter image-sensor is not 
required, and exquisite, nuanced 
color expression can be created 
in pixel-location units. Compared 

with the color-fudging Bayer 
filter image sensor, the Foveon 
X3® takes color resolution to 
a new and truly amazing level. 

Since it does not need a color 
filter, the direct image sensor 
does not generate the color 
artifacts that color filters, by their 
very nature, tend to produce. 
This, of course, means that no 
optical low-pass filter is needed 
either. This full-color capture 
system can cope with all kinds 
of high-frequency areas, and 
capture the full complement 
of colors. That's why the results 
are both absolutely natural 
and truly exquisite.

The 

Bayer filter Image Sensor

The old-fashioned Bayer filter image sensor 
can only capture 50% of the green color data, 
and a mere 25% each of the blue and the red.

R: 100% G: 100% B: 100%

R: 25% G: 50% B: 25%

The 

Foveon X3® Sensor

The Foveon X3® has three layers of 
photosensors, enabling it to capture 100% 
of the RGB color data at once.

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Содержание DP2X

Страница 1: ...The Sigma DP series The world s only all in one compact camera with the full spec of an SLR Well now we ve taken things even further Meet the Sigma DP2x ...

Страница 2: ... that principle Camera formats and mechanisms may change with the times But the definition of a good camera is timeless It s one that takes a great picture Those are Sigma s photographic convictions as embodied in the DP1 Considering its compact body the DP1 delivers amazing picture quality It created a whole new high performance category and won a whole lot of fans The DP2x the successor to the D...

Страница 3: ...Camera SIGMA DP2 FileType X3F Raw Exposure Mode Aperture Priority AE ISO Setting 100 White Balance Auto Shutter Speed 1 30s Aperture Value F2 8 Focal Length 24 2 mm 03 ...

Страница 4: ...Camera SIGMA DP2 FileType X3F Raw Exposure Mode Aperture Priority AE ISO Setting 100 White Balance Auto Shutter Speed 1 60s Aperture Value F2 8 Focal Length 24 2 mm 04 ...

Страница 5: ...specific jobs An expensive large format camera tends to be brought out for a clear cut purpose a family celebration a trip a special event Those shots are fun to take and certainly pack an emotional punch But if you had to choose your own best ever picture would it be one you took on a special occasion We re guessing it wouldn t That glimpse of unexpected beauty on your daily commute early in the ...

Страница 6: ...he product Sure when you have to shoot from just one spot with no physical room to move a high magnification zoom lens covering the range from wide angle to telephoto is the height of convenience And conversely when your single focal length lens has the wrong field angle for the situation you might not get the ideal shot Nevertheless despite this inconvenience many amateur photographers still love...

Страница 7: ...07 ...

Страница 8: ...Camera SIGMA DP2 FileType X3F Raw Exposure Mode Aperture Priority AE ISO Setting 100 White Balance Auto Shutter Speed 1 640s Aperture Value F2 8 Focal Length 24 2 mm 08 ...

Страница 9: ...Camera SIGMA DP2 FileType X3F Raw Exposure Mode Aperture Priority AE ISO Setting 100 White Balance Auto Shutter Speed 1 640s Aperture Value F2 8 Focal Length 24 2 mm 09 ...

Страница 10: ...10 ...

Страница 11: ...Camera SIGMA DP2 FileType X3F Raw Exposure Mode Aperture Priority AE ISO Setting 100 White Balance Auto Shutter Speed 1 6s Aperture Value F8 Focal Length 24 2 mm 1 1 ...

Страница 12: ...Camera SIGMA DP2 FileType X3F Raw Exposure Mode Aperture Priority AE ISO Setting 100 White Balance Auto Shutter Speed 1 1000s Aperture Value F5 6 Focal Length 24 2 mm 12 ...

Страница 13: ...13 ...

Страница 14: ...o a different dimension Picture this Light traveling through a small lens is captured by a small sensor and turned into an image Light travelling through a large sensor is captured by a large sensor and turned into an image What s the difference between these two images Essentially it s a difference in quality In the case of the small image sensor the image is magnified by a high ratio when it s p...

Страница 15: ...This photograph shows the approximate dimensions of the Sigma DP2x 15 ...

Страница 16: ...dging Bayer filter image sensor the Foveon X3 takes color resolution to a new and truly amazing level Since it does not need a color filter the direct image sensor does not generate the color artifacts that color filters by their very nature tend to produce This of course means that no optical low pass filter is needed either This full color capture system can cope with all kinds of high frequency...

Страница 17: ... cameras using a Bayer color filter has yet another filter known as an optical low pass or blurring filter interposed between the lens and the sensor in order to suppress color artifacts The optical low pass filter acts on the images resolved at a high level by the imaging lens its job being to eliminate any detailed elements likely to generate color artifacts high frequency areas above a certain ...

Страница 18: ...ical performance A super high performance lens that s flat as a pancake right to the edge In order to maintain high resolution and contrast from the center of the screen right to the edge and to allow scope for those cool background blur effects we aimed for the kind of MTF and all round lens performance only available with single index lenses We are confident that the DP2x s lens improved time an...

Страница 19: ...19 ...

Страница 20: ...amera into your printer and the image data files are ready to share with your friends and family If you want email friendly image files that can be transferred straight from your camera JPEG mode wins hands down on convenience However when you create a JPEG file the data is subjected to irreversible compression which leaves very little scope for image correction afterwards And here s the rub if yo...

Страница 21: ... is less sensitive to color data than to brightness data this historical format has survived intact to this day and is still used as the mainstream format in digital cameras However now that digital camera performance has improved so dramatically people are using their photos in different ways displaying enlargements on their computer screens and large photo prints are mainstream Today s output co...

Страница 22: ...nto the essence of photography Sigma s design policy is to empower the photographer to concentrate on the core task taking pictures Our top priority is to deliver the functionality and reliability this requires That s way in adding extra features we ve been generous to a fault The rather simple user interface we gave the DP1 has been refined for the DP2 making it even easier to shoot pictures just...

Страница 23: ...23 ...

Страница 24: ... Number of Pixels Aspect Ratio Foveon X3 direct image sensor CMOS 20 7 x 13 8mm 0 8in x 0 5in Total Pixel 14 45 MP 2 688 x 1 792 x 3 layers Effective Pixel 14 06 MP 2 652 x 1 768 x 3 layers 3 2 IMAGE SENSOR Metering System Exposure Control System Exposure Compensation AE Lock Auto Bracketing TTL Full Aperture Metering 1 Evaluative Metering 2 Center Weighted Average Metering 3 Spot Metering P Progr...

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