dimanche 22 avril 2012

Comparaison Canon-Nikon par Fred Miranda

Un essai intéressant des deux boîtiers avec le même objectif (Zeiss Distagon 21mm).

http://www.fredmiranda.com/5DIII-D800/index_controlled-tests.html

Je ne pensais pas que Nikon avait fait aussi fort pour le moiré comparé au Canon.

Canon

Nikon

A voir en grand. Les lettres sont plus lisibles sur le Nikon.

Canon

Nikon


Pas de moiré sur la petite tour (volets en blancs).

"This cross section gives an example of the Moiré pattern produced by the Canon 5D Mark III. Notice the white horizontal slats on the top part of the dome. I can only assume that the AA filter on this camera is weaker compared to Nikon's."

Canon

Nikon

Là aussi le Nikon est meilleur.

"Obviously, the Nikon D800 is in a totally different league. Absent of color noise or any pattern, this image reveals Nikon's exceptional performance."

Encore une pour se mieux voir la gestion du bruit

Canon

Nikon

"I know this is disappointing for Canon shooters but on the bright side, I figured out a workaround if you shoot RAW. Start by overexposing by about 1 stop above the correct exposure before taking your shot and then underexpose by the same amount later in software, basically normalizing the image. For example, in Lightroom, you would move the exposure slider to -1. This gives you the correct exposure but the shadow detail is much cleaner just in case you need to push it a stop or two. In other words, using this technique banding and noise subsides considerably. I have been using this workaround for many years and have been happy with the results.
In regards to the Nikon D800 handing of noise in the shadow areas, I have to say it's nothing short of amazing! Kudos to Sony and Nikon for the new sensor partnership. The Exmor sensor is exceptional and there is so much detail in the shadows. I can push the shadows more than 4 stops without any hint of color noise. WOW! Let's just say the D800 sensor is a breakthrough in sensor technology."

"In order to get the most out of Nikon's 36MP sensor, we need to use the best glass at their sweet spot apertures. Apertures too wide will lessen resolution due to lens aberration and too small will rob resolution due to diffraction. "

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