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First Leica camera test results published at DxOMark

First Leica camera test results published at DxOMark | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it
Even though the M9 technology is now over 3 years old, DxOmark tested for the first time the sensor inside the Leica M-E camera.

Via Philippe Gassmann
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Mark Wagenaar's comment, March 7, 2013 7:35 PM
Testing a 3 year old camera. Says a lot for the endurance of Leica M cameras
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DxOMark - Sigma 12-24mm F4.5-5.6 EX DG HSM II Canon: Test results

DxOMark - Sigma 12-24mm F4.5-5.6 EX DG HSM II Canon: Test results | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it

"This new Sigma 12-24mm EX DG HSM II wide-angle zoom for full-frame cameras is a somewhat improved version of the previous lens, the solidly-built Sigma 12-24mm F4.5-5.6 EX DG Canon.
Let’s start off by taking a look at how these two lenses compare when mounted on a Canon 5D Mark II body:

Sigma 12-24mm F4.5-5.6 EX DG HSM II Canon vs Sigma 12-24mm F4.5-5.6 EX DG Canon

The most striking improvement for the EX DG HSM II is with respect to chromatic aberration, thanks to the use of FLD (“F” low dispersion) glass, specially formulated to simulate the transmission properties of fluorite glass (i.e., lower refractive index and dispersion as compared to other optical glass). There is marked suppression of chromatic aberration at 12mm, particularly in the image center, and at 24mm, chromatic aberrations completely disappear.
Vignetting, transmission, and resolution for the HSM II also show improvement over the earlier EX DG lens, but nowhere near as dramatic:

For vignetting, there is a net improvement at the 12mm focal length (e.g., f/4.5-5.6), and an overall improvement at all focal lengths from f/8 onwards. Transmission results remain low for both lenses, with a scarcely-worth-mentioning improvement of only 0.2 stop for the HSM II. For resolution, the HSM II generally better in the center and worse on the edges (for example, at 17mm, f/5).

One surprise, however, is that the HSM II scores worse for distortion than its predecessor. For both lenses, distortion is visible at 12mm, but negligible at higher focal lengths.
Although the EX DG HSM II’s DxOMark overall score (11) beats the EX DG’s score (10), obviously the improvements are not so significant as to induce EX DG owners to run out and replace their old lens with the newer model. For photographers looking for a wide-angle zoom and trying to decide between the HSM II and the EX DG, it is not clear that the improvements to the newer model are worth the more than 50% markup in price over the previous version."


Via Philippe Gassmann
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DxOMark - Looking for a luminous lens kit? Choose Tamron or Sigma!

DxOMark - Looking for a luminous lens kit? Choose Tamron or Sigma! | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it

"New results are available on dxomark.com for the Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF lens (Nikon and Canon mounts). This new review, along with our recent review of the Sigma 17-50mm, completes a set of measurements for trans-standard luminous lenses."


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DxOmark test: Nikon sensors as good as Micro Four Thirds sensors!

DxOmark test: Nikon sensors as good as Micro Four Thirds sensors! | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it

"Looking at the images samples floating around the web almost nobody believed the Nikon J1 and V1 sensor could be as good as the bigger Micro Four Thirds sensors. And here comes the latest DxOmark test and tells you exactly the opposite story. According to their tests the sensor of the J1 is exactly as good as the latest 16 Megapixel sensor of the Panasonic G3 and better than the rest of the Micro Four Thirds cameras. Color depth and landscape is slightly better than the G3 and only at High-ISO Micro Four Thirds has a visible advantage. Anyway, Sony still has by far the best sensor of all Mirrorless cameras. The NEX-C3 has 17 more points than the J1 and I bet the new Sony NEX-5n is even better!"


Via Philippe Gassmann
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How DxO Labs tests hot cameras like Canon's latest SLR

How DxO Labs tests hot cameras like Canon's latest SLR | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it

"CNET's Stephen Shankland went behind the scenes near Paris to see DxO put the highly anticipated EOS 5D Mark III through its paces. It's a rare look at one of the world's preeminent camera testers."


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DxOMark - Sony NEX-7 comparisons and review

DxOMark - Sony NEX-7 comparisons and review | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it

"Since we tested the Sony SLT A77 we were very curious to see how the soon-to-be released Sony NEX 7 would compare. And today we have the answer: as we expected, the absence of mirror give the NEX7 some advantages. Let's see it in details..."


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DxOMark - Phase One IQ 180: the new King of all sensors

DxOMark - Phase One IQ 180: the new King of all sensors | "Cameras, Camcorders, Pictures, HDR, Gadgets, Films, Movies, Landscapes" | Scoop.it

"When we received the IQ 180 Digital Back from Phase One, we expected a lot from this huge 80 MPixels sensor. And, indeed, the sensor is the best we ever tested with an overall score of 91: the best score ever and the first one over 90 points on DxOMark scale! Let’s check the details...."


Via Philippe Gassmann
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