Archive for DSLR

Hasselblad DSLR/SLT

Posted in DSLR, Hasselblad, Uncategorized with tags , , on February 3, 2014 by reselgroth

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a77

Posted in DSLR, sony alpha, Uncategorized with tags , , , , , , , , , , , on September 5, 2011 by reselgroth

Preview based on a pre-production SLT-A77 running firmware 0.65

After a four-year wait, Sony has returned to the enthusiast/semi-pro end of the DSLR market. Having made little impact in that market with the A700 that very closely resembled the conventional DSLRs made by Canon and Nikon, Sony has spent the intervening time developing something a bit different. The A77 builds on the company’s ‘translucent mirror’ technology, and uses an electronic rather than optical viewfinder. The final result is a product that may look traditional, but is able to promise the unconventional.

Spec-wise the A77 is impressive: it features a new 24MP APS-C CMOS sensor, 12fps full-resolution shooting and the highest resolution EVF we’ve ever encountered (a 2.4M dot OLED finder). It also uses a new 19-point AF sensor, 11 points of which  are cross-type (sensitive to detail in both the vertical and horizontal axis). Clever use of the main sensor’s live view allows the A77 to track objects as they move across the frame, enabling the camera to have a better understanding of which AF point it should be using at any given time.

Last year’s SLT-A55 gave some clues about how Sony hoped to bring its electronics know-how to bear in a high-end camera. Its fixed, semi-transparent mirror design meant Sony could do away with a conventional optical viewfinder and use an electronic display. It also meant that the phase-detection autofocus that gives DSLRs much of their immediacy could be used all the time. The result was a camera that could shoot at an impressive 10fps, could focus quickly in video mode and offered full-time live view with consistent DSLR-like behaviour in a way that no camera had really managed before.

Unsurprisingly the A77 takes all these capabilities a lot further than the consumer-level A55 – it combines the latest processor with an electronic first curtain shutter to offer the level of responsiveness the more demanding enthusiast/semi-pro users will expect. The A77’s massively improved viewfinder is also key to ensuring the A77 can hold its own against the very stiff competition it faces from the likes of Canon’s 7D. (You don’t have to read particularly far between the lines to conclude it was this feature Sony wanted to perfect before launching an SLT into this market.)

And, as with the A55 and a handful of other recent Sony cameras, the A77 offers in-camera GPS. It can be a really useful feature for organising and retreiving images, as allowing tagged images to be geo-located on sites such as Flickr. As with all GPS settings, it can take a while to locate enough satellites, or struggle to find them at all in built-up areas. Then, of course, there’s a battery penalty to be paid.

In addition to the technological advances, Sony has clearly been listening to its audience when developing the camera’s firmware – the A77 is not just the most customizable Sony we’ve ever encountered, but that customization includes a number of long asked-for features. In addition to the ability to fine-adjust the AF tuning, Sony has added the ability to define the upper and lower extremes that the Auto ISO system will use  – a step we suspect many users will welcome.

But despite all this technological wizardry, the A77 is actually a remarkably conventional-feeling camera. It may have a plastic top-plate, rather than the A700’s tank-like magnesium-alloy construction, and  use SD rather than CF cards, but in pretty much every other respect it looks and behaves like a logical progression of the series. Overall, despite the fact that it embraces a rather different set of technologies, it feels and behaves much like a conventional semi-pro DSLR.

I’m so excited to get my hands on this camera and give it a test drive, too bad we have to wait till Oct too see what it can really do in the hand of a seasoned photographer hehehe. I really think they should have given it two memory card slots but oh well with the size of memory you can buy now I’m sure one will be enough to keep you shooting most of the day. Can’t wait.

Sony A77

Posted in Uncategorized with tags , , , , , , , , , on June 1, 2011 by reselgroth

The A77 announcing in July.  If Sony’s new A77 SLT does indeed have a 24mp sensor,  it should be as good or better than Sony’s lovely 16mp sensor. It would have better corner to corner resolution than the A900 and A850 because it will be taking advantage of the sweet spot of the same full frame lenses they use, and a serious advantage even with lower priced lenses over higher priced lenses FF require just to get close to the kind of corner to corner sharpness levels APS-C can produce. We’ll see what happens in July ? (7/11/11) Latest update says it’s NOT going to be a SLT but will be a SLR.

Sigma SD1

Posted in DSLR, Uncategorized with tags , , , , , , on September 21, 2010 by reselgroth

* 46 megapixel 24×16mm APS-C sensor
* Lightweight yet solid magnesium alloy body
* Weather-resistant O-ring sealing connections
* Dual ‘TRUE II’ image processing engines
* 11 Point Twin Cross AF Sensor

The Sigma Corporation is pleased to announce the new SIGMA SD1 Digital SLR Camera, incorporating a 46 megapixel 24×16mm APS-C X3 direct image sensor. The SIGMA SD1 is Sigma’s flagship digital SLR model, adopting a lightweight yet solid magnesium alloy for its body and O-ring sealing connections to make a weather-resistant design throughout for use in harsh conditions.

The SIGMA SD1 incorporates a 24×16mm APS-C X3 direct image sensor and dual “TRUE (Three-layer Responsive Ultimate Engine) II” image processing engines. The combination of the 46 megapixel sensor and dual TRUE II processing engines ensure the high resolution images are processed quickly with high definition and smooth and subtle graduation of colour. The SD1 is SIGMA’s latest digital SLR camera which meets high requirements of professional and enthusiast photographers for all types of photography.

SD1 Special site: http://www.SIGMA-SD.com/sd1
Product Summary

46 megapixel 24×16mm APS-C X3 Full-colour image sensor
The 46 megapixel (4,800×3,200×3 layers) 24×16mm APS-C X3 direct image sensor featured in the Sigma SD1 captures all primary RGB colours at each and every pixel location, ensuring the capture of full and complete colour. Using three silicon-embedded layers of photo detectors, stacked vertically to take advantage of silicon’s ability to absorb red, green and blue light at different respective depths, it efficiently reproduces colour more accurately, and offers sharper resolution, pixel for pixel, than any conventional image sensor. Since colour moiré is not generated, the use of a low-pass filter is not required, meaning light and colour, generated by the 46 megapixel APS-C X3 direct image sensor, is captured with a three-dimensional feel.

Dual TRUE II image processing engine
The SD1 incorporates a dual “TRUE (Three-layer Responsive Ultimate Engine) II” image processing engine which improves the processing speed and overall quality of the final image. The unique image-processing algorithm provides high resolution power and reproduces high definition images with richly graduated tones.

CF card
The SD1 adopts the TYPE I CF Card. This camera is compatible with UDMA Mode6, enabling fast processing of large amounts of data.
* It is not possible to use Microdrives and TYPE II CF cards.

11 point twin cross sensor
The autofocus system features an 11 point twin cross sensor. The shifted twin cross type sensor improves AF accuracy.

Magnesium body
The Sigma SD1 adopts a lightweight yet solid magnesium alloy body designed to withstand rough use and shocks in harsh conditions.

Weather-resistant design
Buttons and connections benefit from O-ring sealings to prevent dust and water getting inside the camera body.

Large, highly visible 3.0” TFT colour LCD Monitor
The SD1 camera features a 3.0 inch TFT colour monitor. This 460,000 pixel resolution LCD monitor benefits from a wide viewing angle, making it easy to check focusing and composition.

Optional lenses
The SD1 can be used with over 40 Sigma lenses such as ultra-wide, ultra-telephoto, macro and fisheyes which adopt the latest technology such as FLD and SLD glass, Aspherical lenses, Sigma’s unique Optical Stabiliser function, Hyper Sonic Motor and Sigma’s Super Multi Layer Coating. They meet the various and demanding requirements of all types of photographers.
Sigma SD1 camera specifications
Format Interchangeable lens SLR camera
Storage Media Compact Flash (Type I, UDMA compatible)
Image Sensor Size 24 x 16mm (1.5x APS-C)
Lens Mount SIGMA SA bayonet mount
Compatible Lenses SIGMA SA mount interchangeable lenses
Image Sensor X3 direct image sensor (CMOS)
Effective Pixels 46MP (4,800×3,200×3 layers)
Aspect Ratio 3:2
Viewfinder Type Pentaprism SLR viewfinder
Viewfinder Frame Coverage 98% vertical, 98% horizontal
Viewfinder Magnification 0.95x (with 50mm lens at infinity)
Eye point 18mm
Diopter Adjustment Range -3.0 dpt – +1.5 dpt
Auto Focus Type TTL phase difference detection system
AF Point 11 points twin cross sensor
AF Operating Range EV -2 to +19 (ISO100)
Focus Mode • Single AF
• Continuous AF (with AF motion prediction function)
• Manual
Focusing Screen Fixed, all matt screen
Mirror Quick return
Depth of Field Preview Yes
AF Point Selection • Automatic Selection
• Manual Selection
Active AF point indicator Superimposed in viewfinder
Focus Lock Shutter Release Halfway-Down position
Built-in Flash • Manual Pop-up Built-in flash
• GN11
• 17mm lens angle covered
Flash Metering System S-TTL Auto Flash
Flash Compensation ±3EV (1/3 stop increments)
Flash Sync Terminal Available
Flash Connectivity Hot shoe (contact X synchronization at 1/180 sec. or less, with dedicated flash linking contact)
LCD Monitor • 3.0″ TFT colour LCD monitor
• Approx. 460,000 Pixels
Dimensions 145.5 mm/5.7″ (W) × 112.5 mm/4.4″(H) × 80.0 mm/3.1″
Weight TBA

a750

Posted in DSLR, Uncategorized with tags , , , , , on December 4, 2009 by reselgroth

Sony DSLR-A750 Digital SLR camera : Recently, we have seen the introduction of various Sony Alpha DSLR cameras already known to the public at the time of introduction, caused by a leak on a Sony registration page. There was also talk of the Sony Alpha A750, that up until this day has not yet officially been launched. However, strong evidence indicates that the Sony A750 launch is about to take place. Various rumors are floating around on the Internet; for instance, the existence of a Sony full-frame sensor featuring 14.6 effective Megapixels. The gap between the Sony Alpha A550 and A850 is far too big when it comes to price, and should really be filled in order to connect with the semi-pro DSLR segment.

Sony A750 DSLR camera features
Despite the fact that the Sony Alpha A850 once again forces a price breakthrough for full-frame DSLR cameras, it doesn’t seem to have made an impact. However, we can imagine a Sony A750 featuring a 14.6 Megapixel full-frame sensor and high-speed image processing, to come in and fill the gap, and conquer a potential market share. To be honest; I’ve been expecting the launch of the Sony A750 for quite some time now, but perhaps it has been postponed for strategic reasons, or it could be that launching an Alpha camera without a video function is simply too risky. The CES 2010 (Las Vegas) is coming up soon, and perhaps that will be the time I can bring you more news about a possible Sony Alpha 750 SLR camera.

Sony Sensors Better than Canon.

Posted in DSLR, Uncategorized with tags , , , , , on July 6, 2009 by reselgroth

Sony SLR sensor ranks below Nikon, above Canon
sensor

Three midrange Sony SLRs now are included in DxO Labs’ measurements of image sensor performance, and the Alpha A700 proves to be reasonably competitive.

Sony’s A700, which costs about $1,100 with an 18-70mm lens, has a score of 66.3 on the test, which calculates how well the sensor handles color, a range brightness and darkness, and low-light shooting. That puts it behind the top-scoring camera with a comparably sized sensor, the Nikon D90, almost ties it with the Pentax K10D and Nikon D300, and gives it a a few points’ lead over Canon’s 40D and 50D.

Meanwhile, the A200 scores 62.9 and the A300 an even 64, according to the DxOMark Sensor test results that were updated Tuesday. A five-point difference makes a difference of about 1/3 stop in exposure, DxO says, meaning that a higher-scoring camera can attain the same raw image quality as a rival even though the higher-scoring camera is using a faster exposure or higher ISO.

DxO Labs, a French company, makes a business of measuring camera image quality, developing technology for image-processing hardware and software, and selling software to convert the raw files produced by higher-end cameras into less flexible but more convenient formats such as JPEG. The DxOMark score measures sensor performance based on the raw file, a foundation for overall image quality but only a facet of a camera’s overall performance.
Almost all cameras must ‘demosaic’ data from the image sensor, which records light in a checkerboard pattern of red, green, and blue light, to produce a JPEG image.

Almost all cameras must ‘demosaic’ data from the image sensor, which records light in a checkerboard pattern of red, green, and blue, to produce a JPEG image.
(Credit: DxO Labs)

The company postponed scoring the A700 because until the newer version 4.0 of its firmware, the camera performed noise-reduction processing on the green light captured by the sensor before generating the raw file. DxO frowns upon cameras reducing noise before the raw file is produced, in part because it misses out on steady improvements in software such as Photoshop that can convert raw images.

DxO’s scores haven’t been met with universal acclaim. In response to some criticisms and in an attempt to dispel some confusion, DxO has published a boiled-down DxOMark Sensor explanation.

For example, the company has this to say about sensor resolution, an issue that arose when comparing medium-format cameras with large, high-resolution sensors to high-end SLRs: “DxOMark Sensor and resolution are two independent metrics of sensor performance. As a consequence, just because camera A has more pixels than camera B (and thus sees more details) does not mean that its raw DxOMark Sensor score will be better. So before comparing cameras with DxOMark Sensor, it is important to first determine the resolution you are looking for.”

Sony is to release 2 FF cameras this summer ? Rumor or Not ?

Posted in DSLR, Uncategorized with tags , , , , , , , , on July 1, 2009 by reselgroth

new-sony-alphasSony Bringing 2 Full Frame DSLRs Soon

We fully expect to see the Sony A500 and A550 soon; however, Photo Rumors received a tip that Sony is bringing two new DSLRs this Summer that will have full frame sensors. Whether or not these two models are represented by the A500 and A550 leaks, we don’t know yet. The tipster also points out that the new full frame cameras from Sony will cover both the high-end and low-end price spectrums. He goes on to note that one model will be situated above the current A900 as a pro-level model. The other . . . under $1,000.

Again, we don’t know whether the A500 and A550 will be full frame models. Suspicions abound that these cameras will offer video capabilities though. Given the fact that the recently introduced A230, A330 and A380 lack video capabilities, it would seem likely that the A500 and A550 would do so in order to compete with this feature, which is found in Canon and Nikon’s recently introduced Rebel T1i and D5000, respectively.

Additionally, Sony has recently acknowledged the importance of video capture in future DSLRs. Sony also commented that if it did put video in a DSLR that it should be as good of a feature as found in the popular Handycam series. That’s pretty exciting stuff, particularly if the above-mentioned tipster is to be believed.

Finally, I have also heard reports that Sony was testing some of their new, unannounced cameras in the field last week – quite possibly some of the ones referenced above. Since they have been out and about, somebody is bound to have seen one or two of them floating around. If you’ve seen one, drop us a line through the contact form.

At any rate, expect many more leaks and rumors as we close in on the final announcement of these new camera