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Depth Of Field In Macro Photography
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Catching Lightning In A Camera
This is a composite of nine images, taken in Arizona over a period of a half hour with the Lightning Trigger attached to a Canon EOS 5D and 24-105mm lens on a tripod. The compositing was done in Adobe Photoshop
Lightning Trigger
B. Kidd
Via the Internet
Follow the safety recommendations on the Lightning Trigger Website. The trigger allows you to set your camera outside while you’re safe in your home or vehicle. It’s a great advantage.
Printer Basics
The screen shows a great deal of detail as well as good, balanced lighting, while the printed image is dark and muddy. I don’t use the printer often, and it seems I usually need to clean the heads if I haven’t used the printer for awhile. I also notice that inks don’t last too long.
C. Bosio
Via the Internet
Now the printer needs to know on what kind of media it’s printing. By using paper profiles, the printer is instructed in how the paper accepts ink. Consider the different absorbencies of watercolor papers vs. hard, glossy papers, and you’ll begin to understand the complexity of laying down inks in proper quantities to achieve the desired intensities and colors on different media. Paper profiles are provided by the printer manufacturer or individual paper companies, or are custom-made by the photographer or a profile supplier for a specific media sample.
The environment in which you’re working is important. Shield your monitor from bright light, but look at your prints under controlled lighting conditions. The standard approximates daylight, 5500 degrees Kelvin. Bulbs, both incandescent and fluorescent, are readily available to give you this kind of lighting. A printer that’s sporadically used will have a tendency to clog; there are thousands of miniscule jets, and it doesn’t take much dried ink to cause a problem. Some manufacturers’ printers are more susceptible, and the atmospheric conditions where you live also affect the printer head. Low humidity is the worst. Maintenance helps. Turn on your printer and run a cleaning cycle regularly. Be aware that this uses ink without the benefit of a print. Professional printers like the Canon iPF5100 and Epson 4800 have much larger ink tanks and less tendency to clog.
D-SLR Advantages
Andrew
Via the Internet
It’s the finished image that matters, and there’s no doubt the potential of digital capture far exceeds film. In comparing captures from the latest pro digital cameras and 35mm scans, the processed D-SLR image produces a superior result in sharpness, tonal range, color saturation and image structure (grain vs. pixels).
Visit www.geolepp.com.
Zooms Vs. Fixed-Focal-Lengths
C. Crider
Detroit, Michiigan
Upsizing Files
Swedish subscriber to OP
Via the Internet
Agencies want the best-quality file that can be upsized when needed for commercial use and still be downsized for small publications or the web. An image that has been upsized prior to submission won’t render a quality result. Trust me, the agency will know if you’ve upsized (interpolated) the image. Metadata tells a lot about an image.
Other factors the agency is sensitive about are oversharpening and oversaturating in the attempt to optimize the image before submission. Use restraint.
For information about upcoming seminars and digital-imaging workshops, visit www.geolepp.com. If you have any tips or questions, address them to: OUTDOOR PHOTOGRAPHER, Dept TT, George Lepp, 12121 Wilshire Blvd., Suite 1200, Los Angeles, CA 90025-1176 or online at www.geolepp.com.
George Lepp