dxo labs

DxO Labs tries making sense of camera lens sharpness

Aiming to make it easier for photography enthusiasts to evaluate photo gear, DxO Labs today announced a new method of measuring lens sharpness it hopes will make more intuitive sense.

The idea, called the perceptual megapixel, shows how much of a camera's original sensor resolution a particular lens can preserve when factors such as lens sharpness, optical defects, and sensor pixel size are taken into account.

One example the company provides: on a 21.1-megapixel Canon 5D Mark II, the Sigma 35mm F1.4 DG lens gets a score of 17.2 perceptual megapixels and the much higher-priced Carl … Read more

Phase One, DxO Labs revamp raw photo software

DxO Labs and Phase One updated their image-editing programs this week, aiming to improve image quality and editing controls in an attempt to fend off market heavyweights Adobe Systems and Apple.

DxO Optics Pro 8 and Phase One Capture One Pro 7, like Adobe's Lightroom and Apple's Aperture, are designed in particular to handle raw photos from higher-end cameras, photos taken directly from the image sensor for higher quality, greater flexibility, but more hassle.

Among DxO Optics Pro's new features announced during the PhotoPlus Expo show in New York:

A "Smart Lighting" control designed to … Read more

Canon 5D Mark III underwhelms on sensor test

Canon's EOS 5D Mark III is a hot item in the camera world. It's the successor to the vaunted 5D Mark II, which ignited the video SLR revolution, but with better autofocus, shooting speed, and low-light performance.

Alas for Canon shooters, though, the 22-megapixel image sensor doesn't rate much better than the 21-megapixel one in the 5D Mark II that arrived more than three years earlier, according to tests by imaging technology DxO Labs.

DxO gave the 5D Mark III sensor a score of 81 on the DxOMark test of image sensor performance when shooting raw photos. … Read more

Nikon's D800 outclasses camera rivals in sensor test

The Nikon D800 is the new king of the heap -- at least when it comes to DxO Labs' test of camera image sensors.

The new 36-megapixel high-end SLR got an all-time high score of 95 on the DxOMark test, which measures a variety of sensor attributes when shooting raw images. DxO Labs said it uses a sensor "with no weak points."

The score is a composite that reflects three attributes: dynamic range, which is the breadth of the span between an image's full black and complete white; color depth, which gauges the vividness and accurate color; … Read more