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Sony Alpha DSLR-A230

APS-C AF digital SLR camera

Specification

Production details
Announced:May 2009
System: Sony A APS-C (2006)
Imaging plane
Maximum format:APS-C
Mount and Flange focal distance:Minolta/Sony A [44.5mm]
Imaging plane:23.6 × 15.8mm CCD sensor
Resolution:3872 × 2592 - 10 MP
Shutter
Type:Focal-plane
Model:Electronically controlled
Speeds:30 - 1/4000 + B
Sensor-shift image stabilization:Yes
Exposure
Exposure metering:Through-the-lens (TTL)
Exposure modes:Programmed Auto
Aperture-priority Auto
Shutter-priority Auto
Manual
Physical characteristics
Weight:450g
Dimensions:128x97x67.5mm

Manufacturer description

SAN DIEGO, May 17, 2009 – Sony is making it easy for first-time digital SLR buyers to step up from point-and-shoot digital still cameras with the introduction today of three new easy-to-use α (alpha) cameras (models DSLR-A380, DSLR-A330 and DSLR-A230), four new lenses, a flash and accessories.

Uniquely Matched to Customers’ Needs

The new cameras are designed to overcome challenges faced by many customers taking their first steps in DSLR photography. Without compromising performance and versatility, the new models are smaller, lighter, easier to use and offer innovative expansion options not found in other systems.

“Our new alpha cameras, lenses and accessories make it easier for new users to get the great photos they expect without the steep learning curve that DSLRs have traditionally required,” said Kristen Elder, senior manager for the alpha business at Sony Electronics Inc. “By overcoming the obstacles, we’ve made it much easier for newcomers to take great pictures with DSLRs.”

Light and Compact

The 10.2 megapixel α230 camera is the lightest, most compact alpha DSLR camera body ever at 15.9 ounces. The 10.2 megapixel α330 and the 14.2 megapixel α380 cameras are also smaller and lighter than their predecessor models (the DSLR-A300 and DSLR-A350, respectively). These cameras are also more compact and feature an intuitive control layout that allows for easy single-handed operation.

SteadyShot INSIDE™ in-camera image stabilization is built into each camera body, so every α-mount lens benefits from the ability to minimize blur due to camera shake.

Quick AF Live View System

Both the α380 and α330 cameras offer Sony’s Quick Autofocus (AF) Live View technology, so you can frame photos on the camera’s LCD screen as well as in the optical viewfinder. Through the use of a dedicated image sensor, Quick AF Live View maintains the rapid response of a DSLR, while avoiding the focus delay common to other live view systems.

The new cameras feature a 2.7-inch (diagonally) Clear Photo LCD™ screen that is easy to view even in bright sunlight. Additionally, the LCD on the α380 and α330 models can be tilted up or down, making it easy to frame your subject from high or low positions, otherwise difficult to see using an eye-level viewfinder. The range of adjustment has been increased from their predecessors, making it even easier to get shots from difficult angles.

By combining Quick AF Live View and an adjustable LCD, users can frame the scene without holding the camera in front of their face, allowing parents, for example, to maintain eye-contact when photographing their children for more natural expressions.

An HDMI™ terminal gives you the option of connecting your camera to a compatible HDTV and playing back your images in high definition quality (HDMI cable required, sold separately). Additionally, BRAVIA® Sync™ works with compatible Sony® BRAVIA HDTVs to let you control camera playback using the television’s remote (HDMI cable and BRAVIA Sync capable HDTV required, sold separately).

The new cameras include dedicated slots for high-capacity Memory Stick PRO Duo™, Memory Stick PRO-HG Duo™ and SD/DSHC media (sold separately).

Built-in Help Guide

The α380, α330 and α230 models are Sony’s first DSLR cameras to feature a graphical user interface (GUI) with built-in on-screen Help Guide.

The Help Guide offers clear, concise explanations of various modes and settings, while the Graphic Display helps you understand the relationship between aperture and shutter speed, as well as the effect each has on photographic results.

Systems, Lenses and Flash

Making it easier for first-time DSLR users to get started, the new Sony cameras come in camera-and-lens packages. In addition to the two new standard zoom and telephoto lenses that are offered with the camera bodies, the company introduced new portrait and macro lenses. These purpose-built lenses make it much easier to obtain professional-looking, creative results.

Optimized for use with APS-C sized image sensors, these lenses feature a Smooth Autofocus Motor (SAM) that enables in-lens auto focus (AF) drive for smooth, quiet operation, and high optical performance in a compact size.

The DT 18-55mm F/3.5-5.6 standard zoom lens (model SAL-1855) incorporates aspherical and Extra-low Dispersion (ED) elements to provide an all purpose lens with outstanding image quality. The DT 55-200mm F/4-5.6 telephoto zoom lens (model SAL-55200/2) features an ED glass element and helps bring distant subjects closer, ideal for capturing sports. Both the SAL-1855 and SAL-55200 lenses are available separately, or packaged as kits with the new cameras.

To make the benefits of portrait and macro photography easier and more accessible, Sony is introducing a DT 50mm F/1.8 portrait lens (model SAL-50F18) and DT 30mm F/2.8 (model SAL-30M28) macro lens. The wide aperture SAL-50F18 lens helps users capture beautiful portraits with gently defocused backgrounds while the SAL-30M28 macro lens captures intricate close-ups. Both techniques are difficult to achieve with standard lenses.

To help users take better shots with flash, Sony offers an affordable, compact external flash unit (model HVL-F20AM) that is simple to operate. Unlike a camera’s built-in flash, this external flash provides higher output (Guide Number 20), and enables users to bounce light off the ceiling to eliminate harsh shadows and achieve more even illumination when shooting indoors.

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

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Cannot compare the lens to itself.

Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/ on this lens, and cannot be adjusted.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.

Teleconverters

Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.