Sony launches DSLR-A850 full-frame digital SLR
Sony unveiled its second full-frame digital SLR in the shape of DSLR-A850. It offers almost all features of the company's flagship full frame DSLR A900, but at a more affordable price. It is built around the same 24.6MP CMOS sensor and incorporates A900's 3.0 inch 921k LCD, sensor-shift image-stabilization and Dual Bionz processors. The only compromise is a 98% viewfinder coverage against A900's 100% and slower continuous shooting. To complement the A850, Sony has also announced a mid-priced 28-75mm constant F2.8 SAM lens to fit with the A850's affordable full-frame ethos. The A850 will start shipping from September 2009 with the 28-75mm lens available from November 2009
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Sony unveils DSLR-A550 and DSLR-A500
Sony has also 
added to its consumer-level DSLR range, with the A500 and A550 taking the count to five cameras. The DSLR-A550 and DSLR-A500 digital SLRs are based around new CMOS sensors and add a manual focus confirmation live view mode using the main imaging sensor, in addition to Sony's secondary-sensor Quick AF live view system. Both cameras feature Sony's better noise reduction, include an Auto HDR mode and offer sensitivity of up to ISO 12800. The 14.2 MP A550 features a high resolution 921k dot 3" tilt-angle LCD, while the 12.3 MP A500 comes with a 230k dot resolution 3"tilt-angle LCD.
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Sony DSLR-A550 hands-on preview
Our hands-on preview of the Sony DSLR A550. The recently announced (and reviewed) A380 and its A33
0/A230 variants were not met with universal approval. With the launch of the DSLR-A500 and A550, the bigger picture starts to become clearer, with Sony producing five sub-$1000 DSLRs tailored to a variety of needs. The Alpha 5 series is much more clearly aimed at the photography enthusiast, so we have prepared a 10-page preview detailing its specifications, features and changes. Is this the camera to put smiles back on the faces of the Alpha crowd.
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Sony announces 28-75mm F2.8 SAM lens
Sony has released a full-frame 28-75mm F2.8 SAM lens to accompany its new Alpha DSLR-A850 di
gital SLR. The constant F2.8 lens offers a less expensive alternative to the Sony Zeiss 24-70mm F2.8 ZA for A850 and A900 owners looks for a fast standard zoom. Construction is made up of 14 elements in 16 groups, including four aspherical elements. It features the SAM (Smooth Autofocus Motor) in-lens autofocus technology, rather than the SSM system used in the ZA lens. Priced approximately at around $800 USD, it will start shipping from November 2009.
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Sony DSLR-A380 in-depth review
Our review of the Sony DSLR A380. This is our first review of one of Sony's latest trio of entry-level DS
LRs. Although the specification hasn't changed significantly compared to its predecessor, the A350, its intent has - it's a DSLR clearly designed to reach out to compact camera users thinking of making the leap to the world of large sensors. So how comfortable did we feel in its embrace.
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Sony issues DSC-W170 service notice
Sony has issued a service notice for its Cyber-shot DSC-W170 camera. In some cameras, small particles of metal plating peel off from the casing surrounding the lens, resulting in splinters. Sony will offer a free service to replace the front panel, including the bezel, on units that fall within the affected serial number range.
latest price list camera "Thursday, 27 August 2009"
Difference of type camera of Pocket, Prosumer( semi pro ) and DSLR
To make it simple digital cameras are categorized into 3 type, they are :
1.Pocket/consumer
this type of camera is small enough to put in your pocket
as it's name indicates. it's is handy to carry everywhere , and easy to operate. Event thought they are small , pocket cameras are equipped with many features . Their various scene modes enable you to take picture in my place and conditions.Some can even be used to shoot in 5 meters - deep water , with all th
e features available in today's pocket cameras , the resulting photos are as good as those taken with Prosumer or even DSLR cameras.
2.Prosumer
The word of "Prosumer" comes from PROfessional conSUMER. this type of digital camera is a step ahead of the consumer type these cameras are bigger in size , because their zooming ability up to 20x optical zoom, and manual shoot mode . The zoom range can also be extended via converters, althought converters cannot always be used for all kind of zoom lense .Sometimes , when the zoom is set at maximum , it may result in bad vignetting .
Prosumer cameras are suitable for those who want to learn more about photography before proceeding to the next level.
3. DSLR
Digital Single Lens Reflex Or DSLR camera used interchangeable lenses. A wide variety of lenses for different purposes are available for each camera system. DSLR are also faster at starting focusing , taking pictures taking multiple pictures, better at taking picture under low lighting situations by using higher ISO speeds ( no graininess ) and of course they cost more.
DSLRs are usually large and heavier than other camera types . It means that you probably won't always have your camera ready in your pocket or purse when a photo opportunity comes along ( DSLRs are the type you might wear around your neck with a strap, you can't carry it in your pocket
Digital SLR versus Compact Prosumer Cameras
In the realm of film photography, the choice of camera was pretty clear if you were a serious photographer. Film SLRs can do many things that compact cameras can't do, and the quality they produce is generally significantly higher.
One of the most significant advantages of the film SLR is that you view through the lens, which is vital for taking close-up and macro shots. You can get macro lenses for SLRs that allow a large degree of magnification.
In film cameras, you generally have wider apertures for low-light photography without flash. If you do use flash, you can use an accessory flash that will give you much better lighting than the small flash built into the camera.
In the realm of digital cameras, the factors described in the previous paragraph are available with a prosumer camera as well, and in some cases are done better with one of those than a DSLR.
A prosumer camera is one that has a full range of manual controls, an accessory shoe for an external flash, and mounting threads for filters and additional lenses. Some examples are the Minolta Dimage A2 and A200; the Canon G2,G5, G6 and Pro1; the Nikon 5400, 5700, 8400, and 8800; the Olympus 5050 and 8080; and the Sony F717 and F828.
Some advantages of the prosumer camera:
1. A prosumer camera lets you view the scene through its LCD or electronic viewfinder. Most DSLRs let you view the shot only after you have taken it. The EVF is particularly useful in bright light conditions for reviewing pictures, where the LCD of a DSLR may be difficult to see.
2. A prosumer camera lets you take extreme close-ups, often as large as 1:1 with its built in lens. With a DSLR, you have to buy a rather expensive macro lens, and carry it around with you. In addition, the wider depth of field of cameras with smaller sensors is very useful for macro photography.
3. A prosumer camera doesn't have a moving mirror, which is a source of vibrations and noise in DSLRs, and therefore it can be used at a lower shutter speed and in locations where silence is important.
4. Many prosumer cameras have zoom lenses of a large aperture, such as f/2, which are either extremely expensive, or just plain unavailable for DSLRs. The lenses on prosumer cameras are designed specifically for their CCDs, and generally perform better at large apertures than comparable lenses on DSLRs. On my Pro1, the image is sharp in the corner even at f/2.8. On typical consumer grade SLR zoom lenses, you have to stop down to f/5.6 or f/8 to get the same kind of sharpness -- or spend upward of $1000 for a professional grade zoom lens. One reason for the difference is that the space taken up by the mirror in a DSLR requires a complex retrofocus design to get a wide angle view.
5. Most prosumer cameras are much more compact and lighter than DSLRs, a big advantage for travelling. The lightest prosumer camera, the Nikon 5400, weighs 360 grams, compared to about 800 grams for the typical consumer DSLR with lens.
Some advantages of DSLRs:
1. The larger image sensor of a DSLR has less electronic noise, and therefore can be used at higher ISO values without objectionable noise. This is an advantage for low light photography, and especially for action or sports photography where fast shutter speeds are needed to stop the action. Focussing is also quite a bit faster on DSLRs.
2. By offering interchangeable lenses, the DSLR makes available a wider range of focal lengths. This is especially the case at the long end, where extreme telephoto lenses are available. On the other hand, you get the inconvenience of having to change lenses. You just cannot buy for a DSLR a lens as convenient as the f/2.8-3.5, 28mm-200mm equivalent zoom that comes with the Minolta Dimage A1.
3. A DSLR has less depth of field, so if you want to blur the background, it's somewhat easier to do with a DSLR. However, a Minolta Dimage A1 at f/3.5 at the 200mm end of its zoom range can blur the background better than a DSLR with its standard zoom lens.
4. DSLRs generally focus faster, have less shutter lag, and can take a larger number of shots in rapid sequence. This means that where there is any kind of action, you can do a better job of capturing the exact moment you want to capture. This is valuable not just for fast action like sports, but shots of people (especially children) who are moving around. You have a better chance of taking spontaneous shots, or capturing that perfect expression.
Image Quality
When a 5 megapixel prosumer camera is used at its lowest ISO setting, there is no significant difference in image quality. The vertical lines of resolution are about the same as in a 6 megapixel DSLR. (The DSLR has 6 megapixels only because it is a wider format. For many photos, e.g., for printing an 8x10, you crop that off and it's wasted.)
Indeed the Canon G5, with 1350 lines of vertical resolution, beats the Nikon D100 and Pentax *istD, which have only 1300. The 8 megapixel prosumer cameras (Minolta Dimage A2, Canon Pro1, Nikon 8700, Sony F828) have even higher resolution. The tiny Canon S80 beats the semi-professional 20D in vertical resolution.(Comparative data on image quality of different cameras can be found at www.dpreview.com)
It is usually claimed that DSLRs have more dynamic range, meaning that they can show detail in the shadowed parts of a scene without the brighter parts of the picture being so bright that they lose detail. There may be some truth to this, but the difference is not large in the comparative samples I have seen. One interesting comparison can be seen at http://forums.dpreview.com/forums/read.asp?forum=1007&message=10337700, where an impage from a Nikon 5700 (prosumer) appears to have better dynamic range than a Nikon D70 DSLR.
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Compact Cameras
Easy to use, Point-and-shoot automatic cameras. These are the everyday snappies that most people own. Today almost all consumer cameras are digital, although you can still find some that shoot film. Cheapest price range
Average price of a few hundred USD.
Compact cameras are small and easy to shoot, and there are hundreds of models available in every shape, size, and color. To be honest, if the goal is to take a good clean picture then you will be safe with almost choice.
1. Simple and Very Compact
2. Small form-factors you can take anywhere
3. Automatic
4. good for point-and-shoot photography
Simplified Features
most consumer cameras do not allow you to directly control exposure settings. Look to the specialized shooting modes exposure control
Prosumer digital cameras
Prosumer" is a word often used about cameras (or other gear) that is targetted for sale to people on the border line between being consumers and professional users.
Prosumer-level cameras are the cameras that were designed with the serious amatuer in mind. Reading this site implies that you have a deeper interest in photography, and if your budget can allow for it, you will find that these cameras will allow you to do some really amazing things!
-personally, if I had only one camera with a non-interchangeable lens, I would choose a lens range of 28-140mm over a 38-380mm as it is far more versatile (as long as you are not into wildlife photography) and wide angle images usually create much better visual impact than long telephotos and you can always crop an image to digitally zoom in but you can never "zoom out".
-in general, the larger the sensor size (in mm, not the megapixels), the lower the noise at high ISO for the same number of megapixels and the narrower the depth of field & thus more pleasant portraits, but the larger the physical size of the lens that is needed.
-in general, the larger the optical zoom range, the more versatile it is but the poorer the image quality is over the whole range, hence for best image quality, settle for a 28-140mm zoom rather than a 35-430mm zoom.
-it also helps if the telephoto end has a fast f-ratio such as f/3.5 as a minimum to make low light photography accessible (eg. for available light portraits).
Although they sometimes look similar to consumer cameras, prosumer (professional-consumer) equipment is packed full of features that serious photographers will love. Prosumer cameras usually have better lenses, higher detail, and much more control over exposure than their cheaper consumer cousins. Medium to high price range
From $500 to over $1000 USD
Compact
It's amazing how much technology is in a prosumer camera. The fact that the camera is totally self-contained (lens, flash, etc) is a big selling point.
High Quality/Resolution
Both the lenses and the digital CCD offer sharp images with great quality. Newer cameras can easily shoot for print publication.
Feature Packed
If anything, there are too many features crammed into the average prosumer camera. For the enthusiast photographer, this kind of camera is deal because it allows much room to grow.
Recommended Cameras
Canon Digital Rebel XT
Canon EOS 30D
Canon PowerShot A430
Canon Powershot A520
Canon Powershot A610
Canon Powershot A620
Canon Powershot S2 IS
Canon Powershot S5 IS
Canon Powershot S80
Canon Powershot SD450
Canon Powershot SD550
Canon PowerShot SD600
Canon PowerShot SD630
Kodak EasyShare C300
Kodak EasyShare C330
Kodak EasyShare DX 4530
Kodak EasyShare V550
Kodak EasyShare Z730
Kodak Easyshare Z740
Nikon Coolpix S1
Nikon D40X
Nikon D50
Olympus E20
Sony Cybershot DSC T9
Sony Cybershot DSCH1
Sony Cybershot DSCN1
Sony Cybershot DSCS90
Sony Cybershot DSCW50
Digital single-lens reflex camera
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses a mechanical mirror system and pentaprism to direct light from the lens to an optical viewfinder on the back of the camera.
The basic operation of a DSLR is as follows: for viewing purposes, the mirror reflects the light coming through the attached lens upwards at a 90 degree angle. It is then reflected twice by the pentaprism, rectifying it for the photographer's eye. During exposure, the mirror assembly swings upward, the aperture narrows (if set smaller than wide open), and a shutter opens, allowing the lens to project light onto the image sensor. A second shutter then covers the sensor, marking the end of the exposure, and the mirror lowers while the shutter resets. The period that the mirror is flipped up is referred to as "viewfinder blackout". A fast-acting mirror and shutter is preferred so as to not delay an action photo.
All of this happens automatically over a period of milliseconds. Fast cameras do this upwards of 10 times a second.
DSLRs are often preferred by professional still photographers because they allow an accurate preview of framing close to the moment of exposure, and because DSLRs allow the user to choose from a variety of interchangeable lenses. Most DSLRs also have a function that allows accurate preview of depth of field.
Many professionals also prefer DSLRs for their larger sensors compared to most compact digitals. DSLRs have sensors which are generally closer in size to the traditional film formats that many current professionals started out using. These large sensors allow for similar depths of field and picture angle to film formats.
Brief difference between a DSLR and a digital point and shoot camera
The reflex design scheme is a major difference between a DSLR and an ordinary digital point and shoot camera, which typically exposes the sensor constantly to the light projected by the lens, allowing the camera's screen to be used as an electronic viewfinder.
In contrast, the mirror arrangement in a DSLR usually precludes the ability to view the scene on the liquid crystal display (LCD) before the photograph is taken. However, many newer DSLR models feature live preview, allowing the LCD to be used as a viewfinder in the same way as a normal digicam, although with certain limitations and with the optical viewfinder disabled.
In most other respects, a DSLR is similar in principle and operation to a standard (non-SLR) digital camera.
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