Archive for May, 2008

Why Johnny Can’t Print

My title is a play on Why Johnny Can’t Read, a 1955 book by Rudolf Flesch that argued that schoolchildren should be taught to read with phonics instead of look-say or whole language. (Here’s a review of the book. It’s priced at $3, but only if you go back in time to 1955.) Educators continued to [...] Read the rest of this entry »

Looking at a Real NEF Bayer Pattern

(Article updated 8-May-2008 to reflect version 1.1 of the app: The Lighten checkbox makes images even lighter, and there’s a new demosaicing method, explained below.) Most raw files contain data from a sensor arranged to record the image in a Bayer mosaic: Each pixel is a value of either red, green, or blue, and you get [...] Read the rest of this entry »