Sony's Alpha for Amateurs
The Sony Alpha DSLR-A700 takes the top spot in Sony's dSLR lineup.
Although it made its unofficial debut under glass at last winter's PMA show with naught but "Sony's amateur dSLR" to identify it--and an equally and still mysterious big brother by its side--Sony's Alpha DSLR-A700 finally gets a name, a price, and some specs today.
The long-awaited (at the very least by Konica-Minolta diehards) midrange dSLR incorporates Sony's latest 12-megapixel CMOS chip. Unlike most other sensors, this new model performs its analog-to-digital conversion on its chip, rather than in the imaging pipeline, which Sony claims delivers better control over image noise.
I had a chance, along with several other journalists, to shoot with the A700 for a couple of days. You can find my comments on the experience in the accompanying slide show.
As you'd expect from the current flagship model, the A700 includes several new and enhanced technologies. For one, the SteadyShot stabilization system--not the optical version, but the sensor-shift mechanism inherited from Konica Minolta--has a new gyro, with claimed improved compensation for high-frequency motion, such as overcaffeinated hands.
Like the Nikon D300, the A700 also sports a somewhat confusingly specced 921,600-dot/307,200-pixel LCD with an approximate 170-degree rated viewing angle.
Sony has also overhauled the focusing system with a new 11-area AF system with 2 each horizontal and vertical line sensors in the center plus an f2.8 sensor to improve focus speed when shooting with a wide-aperture lens.
In-camera processing algorithms also get a boost. Sony's Dynamic Range Optimizer, which applies image adjustment curves to expand the tonal range, now offers an advanced mode that analyzes 1200 segments in the frame for theoretically better results. In addition, there's a DRO bracketing drive mode.
| Alpha DSLR-A100 | Alpha DSLR-A700 | Canon EOS 40D | |
| Sensor | 10.2-megapixel CCD 23.6 x 15.8 mm | 12.2-megapixel CMOS 23.5 x 15.6mm | 10.1-megapixel CMOS 22.2 x 14.8mm |
| Sensitivity range | ISO 100 - ISO 1600 | ISO 200 - ISO 6400 | ISO 100 - ISO 3200 |
| Focal-length multiplier | 1.5X | 1.5X | 1.6X |
| Continuous shooting | 3fps unlimited JPEG/6 raw | 5 fps 8 (Extra fine) or unlimited (Fine) JPEG/18 raw | 6.5fps 75 JPEG/17 raw |
| Viewfinder | 95% coverage 0.83X magnification 20mm eye point fixed matte focusing screen | 95% coverage 0.90X magnification 25mm eye point interchangeable matte focusing screen 2 optional focusing screens: tk | 95% coverage 0.95X magnification 22mm eye point interchangeable matte focusing screen. 2 optional focusing screens $45 each: grid, Super-Precision Matte |
| Autofocus | 9-pt AF one cross-type sensor in center | 11-pt AF two cross-type sensors in center (one f/2.8) | 9-pt AF all cross-type to f/5.6 |
| Live View | Limited | No | Yes |
| LCD size | 2.5 inches 230,000 pixels | 3 inches 307,200 pixels | 3 inches 230,000 pixels |
| Shutter durability | n/a | 100,000 cycles | 100,000 cycles |
| Price (body only) | $699.99 | $1,399 | $1,299 |
As is becoming the trend, the A700 includes an HDMI connector for output to an HDTV. Sony takes it one step further--at least for those few who plan to complement their A700 with a Bravia TV--by introducing PhotoTV HD viewing, a still-image optimized mode that automatically downconverts and applies relevant color and tonal range adjustments to show your photos at their best.
Wherever dSLRs tread, lenses follow. Accompanying the A700, Sony announced three new lenses. Though it makes a pricey kit,the new $580 f3.5-to f/5.6, 16mm-to-105mm lens covers a good general-purpose range, providing the same angle of view as a 24mm-to-157.5mm lens on a 35mm camera. Also debuting is the $550 f3.5-to-f/6.3, 18mm-to-250mm (27mm-to-375mm-equivalent). And though it won't be available until next spring, Sony announced a f4.5-to-f/5.6 70mm-to-300 mm (105mm-450mm-equivalent) lens that incorporates a supersonic motor in its autofocus system (for quieter, smoother operation).
The A700 is slated to ship around early November in three configurations: the body only for $1,399; a kit with the existing