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Digital Masters: B&W Printing: Creating the Digital Master Print (A Lark Photography Book)

George DeWolfe is a master of the fine print: he studied with photographic geniuses Ansel Adams and Minor White, and worked as a consultant to the most significant companies in the digital photography world. Now, he passes on his considerable expertise to all, in a breathtaking new DIGITAL MASTERS guide that combines artistic concepts for taking beautiful photographs with an array of practical techniques. With interest in black-and-white exploding, digital photographers will rush to take advantage of the knowledge he imparts.

Belle from Beauty and the Beast posing for a photo memory with a young guest in the Princess Meet & Greet area of Toontown in the Magic Kingdom. Today, young princesses and princes can meet their favorite Disney Princesses at the newly renovated Town Square Theater (formerly Exposition Hall) on Main Street USA during the Fantasyland expansion project.

My two "little" princesses, who are now in their twenties, were this girl's age long before digital cameras came along. I have thousands of prints I may someday digitize. A good retirement project. ;;-)

The second in a series of seven.

Each portrait in this series was staged to show a different aspect of Aristotle’s ethics. Seven virtues are represented, and each portrays the mean between two extremes – an excess and a defect, otherwise known as "The Golden Mean."

Excess (Vice): Too shy - Virtue: Modesty - Defect (Vice): Showoff

P.S. This image was taken with my digital, then edited, then printed. THEN my external hard drive, with all my working images and edits, got stolen. So I scanned my prints, and that's what this is. Sorry for the lack of EXIF data.

This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
In this work, we have undertaken the construction of a screen-printed electrode modified by a specific membrane to protect the working surface from interferences during the analysis of trace metals by anodic stripping voltammetry. Different crown-ethers selected for their metals affinity have been incorporated into a membrane then deposed on the working surface of the electrode. Each modified electrode has been first tested in an acidified KNO"3 10^-^1molL^-^1 solution (pH 2) doped by free Cd^2^+ and Pb^2^+ ions. The response and selectivity of the modified electrodes have been investigated according to different parameters: (i) the substrates (commercial ink or carbon based homemade ink), (ii) the electrode support (polystyrene or transparency film) and (iii) crown-ethers nature (dibenzo-24-crown-8 and tetrathiacyclododecane 12-crown-4). The influence of the substrate on the response of the electrode is clearly demonstrated. Homemade ink appears as the most appropriate substrate to modify the working surface of the screen-printed electrode by a crown-ether based membrane. The effect of the composition of the membrane has been shown too. The best membrane developed showed a detection limit of 0.6x10^-^8molL^-^1 for Cd and 0.8x10^-^8molL^-^1 for Pb and a quantification limit of 10^-^8molL^-^1 for Cd and 2x10^-^8molL^-^1 for Pb. This method, which integrates the extraction, preconcentration and measurement, was successfully applied to environmental samples without pretreatment.