Olympus E-330 EVOLT Review (original) (raw)

On January 26th 2006 over a year since the introduction of the E-300 Olympus revealed the 7.5 million pixel 'live view' successor, the E-330. The E-330's biggest differentiation to any other digital SLR is its capability to deliver a live view on the LCD monitor (in the same manner as a prosumer / consumer all-in-one digital camera). For those new to digital SLR's this is difficult to achieve because of the mirror / shutter mechanism, the mirror is in the light path in view mode to provide an image to the viewfinder, this means that no image can be projected onto the main sensor. Additionally most large D-SLR sensor don't have video out capability. Other changes over the E-300 include a flip-out LCD screen and a range of feature improvements inherited from the E-500.

Live View

The E-330 achieves live view in one of two ways; in A Mode ('Full-time live view') the mirror stays in place and you can continue to use the viewfinder, the live view image is produced using a small secondary CCD sensor in the viewfinder chamber (as suggested by me five years ago). In B Mode ('Macro live view') the mirror flips up, the shutter opens and the live view is provided by the E-330's unique 'Live MOS' sensor. There are significant differences between the two modes:

UPDATE 22/06/06: With the introduction of firmware 1.2 the E-330 now provides an Auto Focus feature in Live View B mode, it achieves this by dropping the mirror (blanking the Live View), focusing and then returning to Live View. This will obviously be slower than Auto Focus in viewfinder mode.

| | A Mode (full-time live view) | B Mode (macro live view) | | | -------------------------------- | -------------------------------------------- | ------------------------------------------------------- | | Method | Using small CCD sensor in viewfinder chamber | Using 'Live MOS' sensor with mirror up and shutter open | | Auto focus | Yes | Yes, with firmware 1.2 | | Metering | Normal *1 | Not indicated *2 | | Viewfinder | Available | Unavailable (mirror up) | | Frame coverage | 92% | 100% | | Shutter release | Normal | Delayed approx. 1 sec *3 | | Frame assist | Passport modes | Golden section, Grid, Scale | | Live view magnify | No | Yes, 10x | | Depth of field | Not representative | Absolutely accurate | | DOF preview | Yes, via button | Yes, via button |

Compared to the E-300 EVOLT feature and specification differences

| | Olympus E-330 EVOLT | Olympus E-300 EVOLT | | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Sensor | • 4/3 Type 'Live MOS' (NMOS) • 7.5 million effective pixels | • Kodak 4/3 Type CCD • 8.0 million effective pixels | | Image sizes | • 3136 x 2352 • 2560 x 1920 • 1600 x 1200 • 1280 x 960 • 1024 x 768 • 640 x 480 | • 3264 x 2448 • 3200 x 2400 • 2560 x 1920 • 1600 x 1200 • 1280 x 960 • 1024 x 768 • 640 x 480 | | Metering sensor | New 49 area (7 x 7 matrix) | Unspecified | | Metering modes | • Digital ESP • Center-Weighted Average • Spot • Highlight based spot • Shadow based spot | • Digital ESP • Center-Weighted Average • Spot | | ISO sensitivities | • Auto (ISO 100 - 400) • ISO 100 • ISO 125 • ISO 160 • ISO 200 • ISO 250 • ISO 320 • ISO 400 • ISO 500 * • ISO 640 * • ISO 800 * • ISO 1000 * • ISO 1250 * • ISO 1600 * * With ISO Boost set to On | • Auto (ISO 100 - 400) • ISO 100 • ISO 200 • ISO 400 • ISO 800 * • ISO 1600 * * With ISO Boost set to On | | Noise filter | • New High ISO noise filter • Optionally enabled | Unspecified | | HQ compression options | • 1/2.7 • 1/4 • 1/8 • 1/12 | • 1/4 • 1/8 | | Focus modes | • S-AF • C-AF • MF • S-AF & MF • C-AF & MF | • S-AF • C-AF • MF • S-AF & MF | | MF bracketing | Yes | No | | WB bracketing | • 3 frames • 5, 10 or 15 mired steps | • 3 frames • 1, 2 or 3 steps | | Continuous | • 3.0 fps • RAW: 4 frames • JPEG: 15 frames max | • 2.5 fps • RAW: 4 frames • JPEG: 4 frames | | My Mode | Yes | No | | B&W Mode | Selectable filters | Fixed monochrome filter | | Custom WB | 1 memory | 3 memories | | Kelvin WB | 2000 - 14000 K | 2000 - 10000 K | | Flash bracketing | Yes | No | | Scene modes | • Portrait • Landscape • Landscape & Portrait • Night Scene • Night Scene & Portrait • Children • Sports • High Key • Low key • D Image Stabilization • Macro • Natural Macro • Candle • Sunset • Fireworks • Documents • Panorama • Beach & Snow • Under Water Wide • Under Water Macro | • Portrait • Landscape • Landscape + Portrait • Night Scene • Night Scene + Portrait • Macro • Sunset • Candle • Fireworks • Documents • Museum • High Key • Beach & Snow • Sport | | Info. display | • Two levels • Color selectable | One level | | Record review | Any of the seven play display modes | Single image, no histogram | | Play display modes | • No overlaid information • Basic overlay • More detailed overlay • Thumbnail, AF point, 4 way histogram • Large histogram overlay • Blinking highlights • Blinking shadows | • No overlaid information • Basic overlay • More detailed overlay • Large histogram overlay • Blinking highlights • Thumbnail, AF point, info | | Play magnify | Up to 14x | Up to 10x | | Play index | 4, 9, 16, 25 frames, Calendar | 4, 9, 16 frames | | Play marking | Yes, batch erase and copy | No | | Red-eye fix | Yes, play mode 'Edit' | No | | Storage | • Compact Flash • xD-Picture Card | Compact Flash | | Viewfinder | • Side mounted Porro Finder • 94% field of view • 1.0x magnification • Clip-fit eyecup • Eye-piece shutter | • Side mounted Porro Finder • 94% field of view • 1.0x magnification • Fixed eyecup | | LCD monitor | • 2.5" TFT LCD monitor • 215,250 pixels • Wide viewing angle • Flip-out and up | • 1.8" TFT LCD monitor • 134,000 pixels | | Live view on LCD | Yes, two modes | No | | Dimensions | 140 x 87 x 72 mm (5.5 x 3.4 x 2.8 in) | 147 x 85 x 64 mm (5.8 x 3.4 x 2.5 in) | | DC-IN | No | Yes | | Weight | • No battery: 539 g (1.2 lb) • With battery: 617 g (1.4 lb) | • No battery: 580 g (1.3 lb) • With battery: 624 g (1.4 lb) |

Live MOS Sensor technical information

(A Press Release provided by Olympus)

Features

The Live MOS Sensor offers image quality comparable to a Full Frame Transfer (FFT) CCD sensor with the low power requirements of a CMOS sensor, and is noteworthy for its high-quality imaging capabilities over an extended period of time. Simplified circuitry that reduces the distance from each photodiode to its corresponding on-chip microlens assures excellent sensitivity and image quality even when light strikes it at a high angle of incidence.

• Resolution: 7.5 megapixels, with excellent low-light performance characteristics.
• Grain: low-noise technologies assure reduced graininess.
• Tonal range: Simplification of the transfer register and other circuitry results in a large photodiode surface area for FFT-CCD-level sensitivity and responsiveness.
• Low power consumption: Power requirements are approximately half those of FFT-CCD sensors.
• High speed: Simple circuit structure contributes to faster processing overall.

Redesigned Sensor Elements with Greater Photosensitive Surface Area

The Live MOS Sensor takes advantage of the simplified circuit requirements and thinner layer structure of NMOS type sensors to offer a larger photosensitive surface area. In addition, circuit technology refinements were made to boost light utilisation efficiency and improve image quality.

A new transfer mechanism for photodiode signal readout enabled us to reduce the number of circuit paths to two, the same as in a CCD sensor, and thereby minimise the surface area that is unresponsive to light. By effectively enlarging the photosensitive surface area and enabling it to capture light that was previously lost, we were able to achieve both high sensitivity and superior image quality. We also developed a new low-noise photodiode signal amplification circuit to further improve sensitivity.

Low-Noise Technology for Significantly Improved Imaging in Low-Light Environments

A dedicated processing technology developed for use in 5V (design specifications: 2.9V) low-voltage systems is employed to significantly reduce noise. Operating signal noise was also considered, and the sensor photodiodes were deeply embedded in silicon to isolate them from noise-causing elements on the chip surface. As a result, images are clearer, and the graininess and white noise that often appear when shooting in low light are suppressed. Thanks to this technology, low-light performance is improved overall, and a clear image can be obtained even when shooting in very dim light.

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