Linux Tools for Professional Photography
For salable, fine-art prints, I prefer Lightjet prints made by a service bureau on a Cymbolic Sciences Lightjet printer. This printer uses lasers to expose the image onto conventional photo paper, most often Fuji Crystal Archive paper. Wilhelm Imaging Research tests (the authority on photo print life) show these prints have a display life of 60 years with little color shift or fading, significantly longer than most inkjet prints. These prints are indistinguishable from conventional photos and can be made as large as 4 × 5 feet.
Preparing the file for output on the Lightjet is similar to preparing it for inkjet printing. Start by going back to the original file that was saved, not the file for inkjet output. Again, resize the file to the correct physical dimensions, this time using 300PPI rather than 200PPI, sharpen the file using the technique described above and save it to a separate TIFF file. The service bureau I use, Calypso Imaging, offers Lightjet prints for photographers across the US. They also offer a discount if the file to be output has been resized and the correct ICC profile, available from their Web site, applied. Download the latest ICC profile and apply it to your image using tifficc. The image then is ready to be burned to CD-ROM or uploaded to Calypso's FTP site for final output.
A few days later I receive the final print, look back at the process used to create it and contemplate how, although my photo tools have changed, the goal remains the same—to create a print that conveys my feelings about my chosen subject. Finally, I am able to go through this entire process using Linux in combination with affordable desktop products, all in my own digital studio. Although a few areas still need improvements, Linux is very much up to the task. So get out there, take some photos and try out these Linux tools to make great photographic prints.
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When RW Hawkins is not helping companies with their Linux servers, he is camping and backpacking with his 4 × 5 camera in the canyons of the Southwest. He lives in the Silicon Valley with his wife, who prefers pizza to camp food. His Web site, rwhawkins.com, offers a gallery of his fine-art prints as well as technical advice on digital imaging.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide