Articles tagged "dxomark"

DxOMark has rated the Canon 1D X II's sensor, and it looks very competitive for its class. Strong low-ISO dynamic range and impressive high ISO performance see it score 88 - tying with the Nikon D5. Read more

DxOMark published its report on the 50MP sensor in the Canon's EOS 5DS and 5DS R. They're the best-performing Canon sensors to date, offering massive resolution along along with small dynamic range improvements. Do the cameras raise the bar relative to competitors though? Our technical editor Rishi does a thorough analysis, using DxO's data to pit the 5DS against the Nikon D810. Click through for more

The Sigma 50mm F1.4 DG HSM 'Art' is a fast normal prime for full frame cameras, with an unusually complex optical design. Its premium price tag of $950 / £850 makes it substantially more expensive than either its predecessor, or Canon and Nikon's 50mm F1.4 lenses. However Sigma's recent high-end offerings such as the 35mm F1.4 DG HSM and 18-35mm F1.8 DC HSM have been truly excellent, so how does the new 50mm measure up? See the lens test data and our analysis

Over the past few years, DxOMark's tests and scores have provided a numerical measure for the Raw image quality potential of cameras. They've therefore been debated at some length by enthusiasts looking to see where their favourite model stands in the rankings. Now there's a new DxOMark Sensor score champion, but perhaps surprisingly, the first camera to break the 100-point barrier isn't a full frame model from Nikon or Sony, but the RED Epic Dragon movie camera. Click through for details and a link to the full report. 

DxOMark has recently reviewed Nikon's AF-S Nikkor 58mm f/1.4G, a high-end (and very expensive) standard prime for full frame SLRs. As a taster for our upcoming review we've added the test data to our lens widget; as usual you can compare it to similar lenses, including the Nikon and Sigma 50mm F1.4s. Click through for more details and analysis, and a link to DxOMark's own review of the Nikon 58mm F1.4.

Our friends and collaborators over at DxOMark have recently been looking into how lenses score on specific cameras, and the latest model they've examined is Nikon's 24 MP APS-C flagship, the D7100. The article looks at no fewer than 126 lenses, and gauges the advantage of the D7100's higher pixel count and lack of a low-pass filter compared to the 16MP D7000. As a bonus, there's also an assessment of how the imaging performance of Nikon SLRs has improved over the last decade. Click through for the link.   

DxOMark has tested the Canon EOS 70D's live view autofocus system in comparison to the Sony SLT-A77, looking at focus speeds and accuracy in both movie and stills modes. The two cameras offer an intriguing contrast in technologies; the 70D uses Canon's latest 'Dual Pixel AF' on-sensor phase detection, while the A77 employs a separate phase detection AF sensor which receives light via a semi-transparent mirror. Click through to see how the two cameras fare in DxOMark's head-to-head testing.    

Our friends and collaborators over at DxOMark have been looking at the Canon EOS 70D, and testing out how its innovative 20.2MP 'Dual Pixel AF' image sensor measures up in terms of RAW image quality. They've also looked at how Canon's three currently-available STM lenses score on this latest mid-range SLR, as the start of a larger multi-part lens recommendation article for the camera. Click through for links to these and DxOMark's other recent reviews, including tests of the Sony Cyber-shot RX1R. 

Our friends and collaborators over at DxOMark have been investigating lenses for the Pentax K-50, and have just published an article assessing which score best on this well-featured little SLR. They've looked at 28 different models, from both Pentax itself and third-party makes like Sigma and Tamron, and given recommendations for the best lens to buy in various categories. This week they've also tested the Sigma APO 50-500mm f/4.5-6.3 DG OS HSM super-telephoto zoom, and compared it to the rather more expensive Nikon AF-S Nikkor 80-400mm f/4.5-5.6G ED VR. Click through for the links.  

Our friends and collaborators over at DxOMark have been investigating lenses for the Canon EOS 6D, and have tested no fewer than 95 lenses from Canon, Samyang, Sigma, Tamron, Tokina and Zeiss to see which score highest. The results are presented in a multipart article, that also compares the EOS 6D results to those from the EOS 5D Mark III and the Nikon D600. Meanwhile for APS-C SLR users, this week DxOMark also reviewed two fast lenses from Sigma, the 30mm F1.4 DC HSM and (in case you missed it earlier this week) the 18-35mm F1.8 DC HSM. Click through for the links.  

Our friends and collaborators over at DxOMark have been investigating Samsung's NX system, and have recently published reviews of the NX210 and NX300 cameras, alongside an article covering how the company's lenses measure up in comparison to those from the Sony NEX system. Other reviews on the site this week include lens tests on Nikon super-telephoto primes, an assessment of the Sony RX100 II's new back-illuminated CMOS sensor, and the first installment of a multi-part article looking into which lenses score best on the Canon EOS 6D. Click through for the links.

Our friends and collaborators over at DxOMark have been looking into how lenses score on specific cameras, and their latest round-up takes a look at Sony's 24MP full frame flagship, the SLT-A99. The article covers 22 lenses, including both current models from the likes of Sony, Sigma and Zeiss, and some older Konica Minolta optics. They've published a number of reviews of new Sony-mount lenses alongside, including the 300mm F2.8 G II SSM telephoto and the Tamron SP 24-70mm F2.8 Di USD, plus the ZEISS Touits for NEX cameras. Click through for the links.    

Our friends and collaborators over at DxOMark have been looking into how lenses score on specific cameras, and most recently they've been examining Canon's latest SLR, the EOS 700D / Rebel T5i. In an ongoing article they investigate how 130 lenses from Canon, Carl Zeiss, Samyang, Sigma, Tamron and Tokina measure up on the 700D's 18MP sensor. As this is essentially a variant of the sensor used in every Canon APS-C camera since the EOS 7D in 2009, the article could be of interest to a lot of Canon users. Click through for the links.    

Our friends and collaborators over at DxOMark have recently been looking into how lenses score on specific cameras, and the latest model they've examined is the Nikon D600. In a three-part article published at the end of last week, they investigate how 70 lenses from Carl Zeiss, Nikon, Samyang, Sigma, Tamron and Tokina measure up on the D600's 24MP sensor.  The article also compares how given lenses score on the D600 compared to the 36MP D800 and 24MP D3X. Click through for links to the three parts of the article.    

DxO Labs has tested 85 lenses on the Canon EOS 5D Mark III and analysed the results, looking at its two proprietary measures: 'Perceptual Megapixels' for lens sharpness, and the overall DxOMark score. In the first section of a multi-part series, it makes comparisons against both the EOS 5D Mark II and the Nikon D800, with results that may be surprising. Click through for a link to the full article.

DxOMark has introduced a new metric of lens sharpness that it's calling the 'Perceptual MegaPixel'. This is designed to give a simple, easily-understandable indication of how a lens impacts on the resolution of the camera with which it's paired. The measurement is based on standard MTF (Modulation Transfer Function) testing, but also takes into account the sensitivity of the human visual system to detail. The data can be explored over at the DxOMark website.