Category: Photo & Graphics

Surprise! You can find color in B&W photos

This is easy to reduce a color photo to a B&W image (any photo software or any B&W photocopier can do it). But the reverse operation seems difficult at best, impossible in most cases. However, a team of French scientists from the French INRIA (Guillaume Charpiat, Matthias Hofmann et Bernhard Schölkopf) presented recently an algorithm…

Photoshop CS4 vs. The Gimp v2.6

Newsrooms are full of weird coincidences. For example, we just learned that  two products often presented as direct competition were launched this Fall. To my right, here is Adobe with its boxing champion, Photoshop, loaded up to version CS4. To my left, Linux and its community of free developpers pushing the challenger on the ring,…

Pre-Photokina calendar (photo news)

What can be forecasted of the most important (in my eyes 🙂 ) announces expected before the Photokina fair in Koln. 18 September Nikon lenses: AF-S 50mm/1.4 G – AF-S 85mm/1.4 G – AF-S 70-200mm/2,8 VRII.Nikon new SLR : D800 or D900 (24.6MP Full Frame dSLR camera, with Sony-designed sensor), or Nikon new pro SLR:…

Diffraction and digital photography

Several times, I talked about the limitation to photo image quality by light diffraction but I failed to go into the details. To the general request of one reader who asked, I will try to give some explanations to better understand why the digital photographer must absolutely take that into account to make better pictures…