Olympus E-420 DSLR Camera With 25mm lens

Angle of View:When you use the lenses designed for 35mm film with digital camera bodies that incorporate sensors smaller than film there is the potential problem of a loss of wide-angle capability

When you use lenses designed for 35mm film with digital camera bodies that incorporate sensors smaller than film there is the potential problem of a loss of wide-angle capability

Four Thirds solves this phenomenon. As the lens if always fully optimised to suit the sensor, you don't have to contend with expensive wide-angle lenses that do not attain their intended specification - the angle of view you expect is the angle of view you get

The standard focal lens of the Four Thirds standard is around 25mm.So to compare for the 35mm format with a standard focal length of around 50mm, you have to use the factor 2 to have the angle of view compared (50mm = 100mm related to 35mm equivalent focal length)

Lens Resolution & Corner-shading:Because the medium of film is very tolerant, there was no need to equip lenses with very high resolving power in the past. But with digital sensors, this has changed

Conventional lens systems simply do not deliver the lens resolution necessary for electronic sensors.They often have a resolution of only around 10 microns. However, because modern multi-megapixel cameras often have a pixel pitch of just 5 or 6 microns or less, overlapping and quality losses are the result. Therefore, the full theoretical performance of the sensor cannot be used. The problem is exacerbated with a greater number of pixels and a smaller sensor size

All lenses designed for the Four Thirds standard ensure the image sensor is not left wanting. The ultra-fine resolution attained through special manufacturing processes guarantees full sensor performance

For Edge to Edge Clarity:All Four Thirds-optimised lenses feature so-called near telecentric optics

Due to the nature of the electronic sensor construction, image data is lost and there is a susceptibility to interference if light hits the pixels at a high angle of incidence. IT causes a situation called corner-shading, a loss in quality at the edge of the frame. This is associated particularly with cameras using full-format sensors, where lenses must spread the light widely to reach each corner

However, the near telecentric construction of lenses optimised for the Four Thirds standard ensures light hits the sensor at right-angles. This guarantees edge-to-edge colour, clarity and brightness

Standardisation:Four Thirds is a technological standard dedicated to the needs of digital SLR camera systems. It has been designed to maximise the performance of both image sensors and lenses. To achieve this, it sets definitive standards on three levels:Mechanical, Optical and Communication

Mechanical Standards:The type, size and shape of the bayonet mount and mount bore are standardised to permit lens inter-changeability. Also the distance between the focal plane and the lens flange surface (flange back) and the position of the image sensor in relation to the rear of the lens have been defined

Optical Standards: The Four Thirds Standard fixes the size of the image circle, i.e. the diameter of the circle projected by the lens onto the focal plane. The lens mount is roughly twice as big as the image circle, a feature necessary to allow the light to fall at almost perpendicular angles onto the entire image sensor via the near telecentric lens elements, thus virtually eliminating corner-shading

A Communication Standard:The lens and body are no longer separate entities. now, through the standardised communications protocol established by Four Thirds, the two can communicate and exchange information

An Open Standard:The Four Thirds standard has been deliberately designed as an open stnadard.That means the more body, lens and accessory manufacturers adopt the standard, the greater will be the degree of product compatibility. As a result, the range of equipment and options available to photographers will be greater

Manufacturer's Description

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E-420 & 25mm Pancake Lens Kit

Small yet perfectly formed for digital photography For when size really does matter there's the E-420 from Olympus, one of the most compact and lightweight digital SLRs in existence. Perfect for the travel photographer and those for who portability is key, the E-420 delivers photography without compromise thanks to the unique properties of the Olympus E-system and its adopted Four Thirds Standard. Courtesy of an LCD with Live View, it's user friendly too, with the choice of either viewfinder or rear screen for shot composition. ZUIKO DIGITAL 25mm f2.8 pancake lens Maximise the E420's small and lightweight advantage by buying it in conjunction with this 25mm (50mm equivalent in 35mm terms) 'pancake' single focal length lens providing a human eye-type perspective. Together, camera and lens offer one of the smallest DSLR setups on the planet.

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Description

More performance, more ease of use Now, with the intuitive and innovative E-420, high performance digital photography can be achieved by anyone, and in a light and take-anywhere form. Whatever your level of experience, high quality pictures are guaranteed due to the inclusion of 28 shooting modes, with pre-optimised settings for a range of subjects and conditions plus automatic and manual options. Crisp, richly detailed images are delivered courtesy of a 10 megapixel Live MOS sensor, supported by a TruePic III image processor allowing the implementation of Olympus' Shadow Adjustment Technology to enable even exposures even in tricky lighting, low noise and fast processing speed. A case in point; sequential shooting of up to eight full resolution RAW images at 3.5 frames per second (fps) sis possible for those photographers requiring both optimum image quality and optimum speed.

Further ensuring stunning results, dust is kept at bay thanks to Olympus' proprietary Supersonic Wave Filter, which shakes the senor free of any undesirables. Aiding ease of use, photographers can compose and review images courtesy of a generous 2.7-inch HyperCrystal II LCD screen, with 100% scene coverage and the ability to magnify the image by 7x or 10x to help with manual focusing. A Perfect Shot Preview function also allows camera settings to be witnessed on screen and monitored in real time. Auto focus performance has further been enhanced, with a contrast AF system for the added convenience of being able to see the effects of auto focusing in Live View mode immediately on the E-420's LCD.

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Key Features

10 Megapixel Live MOS sensor Crisp, detailed shots for perfect quality images every time Large 6.9cm / 2.7'' HyperCrystal II LCD Comfortable viewing with Autofocus Live View Dust-free photography with powerful and highly effective Supersonic Wave Filter dust reduction system Designed for digital Four Thirds Standard. Fast 3.5 fps continuous shooting with up to 9 images in RAW buffe Face Detection Technology for perfectly focused and exposed faces plus correct exposure for other image areas. Face Detection of up to 8 people. A technology designed to improve exposure for pictures with dark areas. 28 shooting modes including automatic, semi-automatic and manual shooting options, ensure complete versatility whilst shooting a multitude of photographic situations

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THE WORLD’S SMALLEST AND LIGHTEST D-SLR* Exceptional portability and mobility - take it anywhere you go AUTOFOCUS LIVE VIEW Comfortable and simplified composition with Autofocus Live View on a large 2.7"/6.9cm HyperCrystal II LCD LIVE VIEW WITH CONTRAST AF, FACE DETECTION, SHADOW ADJUSTMENT TECHNOLOGY & PHASE DETECTION AF SYSTEM Retains both ease of use and the distinct D-SLR quality advantages simultaneously BUILT-IN FLASH AND WIRELESS FLASH CONTROL Greater shooting versatility due to the option of wireless flash control, significantly extending lighting options

DUAL SLOT - XD/CF Accepts xD-Picture Cards and Compact Flash card. PERFECT SHOT PREVIEW Olympus' new Perfect Shot Preview mode stands out among these features as one of the most useful aspects of the camera. This mode lets you preview how your picture will look under four different EV compensation or white balance settings. If you shoot in awkward lighting, Perfect Shot Preview can really help you take a proper shot without a lot of trial-and-error or menu-hunting. TRUEPIC III Olympus' newest-generation image processing engine. It automatically enhances important aspects of image quality including: Colour reproduction (colour range, saturation and brightness), picture sharpness (reduced image noise, improved edge reproduction), as well as providing faster processing speeds. NEW GRIP New ergonomicly designed grip for improved comfort and ease of operation. *As of March 2008

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