Kodak DCS 760 Review
The DCS 760 was first announced at CeBIT 2001 on 22nd March. It is, as were the DCS 620, 660 and 620x based on a modified Nikon F5 body. The 760 features a 6 megapixel CCD sensor (primary colour filter array - GRGB) with a usable sensitivity equivalent to ISO 80 - 400. This is the same 6 megapixel sensor which was used in the older DCS 560 and 660 digital SLRs.
The DCS 760 enters the market as a direct competitor to Nikon's new 6 megapixel D1x (which I've just reviewed). Those who keep up with what's been going on in the professional digital market will know that Kodak Pro have been slashing prices left right and center. Under pressure from mounting Nikon D1 sales (and to a lesser degree the 'non-professional' Canon EOS-D30) and with lots of other manufacturers keen to step up to the professional digital SLR podium. Kodak have had to bring their prices back down to earth.
It's amazing to think that just a year ago DCS 660's were changing hands for US$25,000 (that price dropped to US$16,000 in August 2000). Today you can get the DCS 760 (which is essentially an improved DCS 660) for US$8,000. At that price it is still however US$1,000 more expensive than the D1x. The question now being is the DCS 760 an altogether better camera than the D1x?
6.3 megapixel CCD
The DCS 760 uses Kodak's 6.3 megapixel KAF-6303CE CCD. This device is one of the largest CCD sensors for professional digital SLR's (only the Philips 6 megapixel CCD is larger - it is full frame but not yet used in any shipping camera - will it ever?). The CCD's effective imaging area measures 27.65 x 18.48 mm and has a cellsize (pixel size) of 9 x 9 µm.
Here's a comparison of sensors, sizes and focal length
multipliers (the ratio of the chip compared to a 35mm negative).
|Sensor / Camera||Effective pixels
|Focal length multiplier||Effective* resolution||Imager area (mm)||Pixel (unit)
| Sony 1/1.8" CCD
||3.12||n/a||2,080 x 1,542||7.18 x 5.32||3.45 x 3.45|
|Canon EOS-D30 CMOS||3.11||1.6x||2,160 x 1,440||22.0 x 14.9||10.1 x 10.1|
|Nikon D1 CCD||2.62||1.5x||2,012 x 1,324||23.6 x 15.5||11.7 x 11.7|
|Nikon D1x CCD||5.24||1.5x||4,024 x 1,324||23.6 x 15.5||5.9 x 11.7|
|Kodak KAF-6303CE CCD||6.35||1.3x||3,088 x 2,056||27.7 x 18.5||9.0 x 9.0|
|APS negative (C type)||n/a||n/a||n/a||30.2 x 16.7||n/a|
|35mm negative||n/a||n/a||n/a||35.0 x 23.3||n/a|
* Actual pixels which return image data, bayer interpolation process reduces this to the final image size.
Here's one place where the DCS 760 differs from the D1x, it has square pixels which means it has equal horizontal and vertical resolution. The D1x uses more horizontal pixels to make up for half the vertical resolution. As you can see from the table above the DCS 760 has just over 1.1 megapixels more resolution than the D1x, though it's a little confusing because the D1x actually has more horizontal resolution.
Another big difference is the 760's 1.3x focal length multiplier. For wide angle work there's certainly some advantage here, a 28mm lens on the 760 would have the equivalent picture angle of a 36 mm lens, on the D1x it would be equivalent to 42 mm (1.5x focal length multiplier).