OP Expert George Lepp tackles your technical photography questions in Tech Tips.
Tuesday, October 6, 2009
Shooting Under Paradise
Getting Wet • HDR On Moving Subjects • JPEG Sources • Viewing Video On Your LCD During a recent foray to Hawai’i to give seminars and workshops for the Canon Explorers of Light, I knew I’d be doing some snorkeling. (Hey! Somebody has to do this job!) I’ve previously used PowerShot compact digital cameras with underwater housings.
Tuesday, September 1, 2009
Do I Need Permission?
Commercial Vs. Editorial Uses • Sharp To The Edges • Extended Macro • TILT! In the August 2009 issue of Outdoor Photographer, you discussed the difference between commercial and editorial uses of images and the need for releases. Please expand on the definition of editorial uses. Would I need a signed permission from the owners of the properties I photograph to use the images in a book?
Tuesday, August 4, 2009
When It Goes Wrong
Hit By Lightning • Hydrate! • Bad Rocky Mountain High • Sooooo Cold • Lost Going To The Devils Postpile• Bugs In The Amazon • All Images Lost Anytime you get a group of professional photographers into close proximity, you’ll find them gathered ’round the campfire (or in the local pub) to swap stories and talk shop.
Tuesday, July 7, 2009
The Perfect Solar Storm
Chasing The Aurora • The Full-Frame Advantage • The Silent Click • Please, Release Me I saw your photograph of the looping aurora borealis as one of the wallpapers within Microsoft Vista OS. Where did you take that photograph, and what’s the best time of year to try to capture the aurora?
Tuesday, June 9, 2009
Taming The Skies
Bringing The Sky Down To Earth • Real Real-Estate Images • Extended Autofocus • Film Everywhere, But No Place To Process • Gauging Filter Effects My true love is landscape photography and, in particular, I love sunset landscapes. One of the big problems I have in post production is optimizing both the sky and the land (and, sometimes, water).
Wednesday, May 6, 2009
Scanning For The Big Print
Keep Scanning That Film • Charge It • Pocket Pro • Comparing Sensors • Volunteer Photographers • Shameless Self-Promotion Department Keep Scanning That Film
Q When using a film/slide scanner, what resolution (dpi) should I use to produce good-quality prints in the 8x10 to 11x14 range?
Via the Internet
Tuesday, April 7, 2009
The Lowdown On Zooms
Digital And Optical Zooms • How Many Clicks Do You Get? • The Color Of sRGB And Adobe RGB (1998) • Film Vs. Digital Vs. Sensor Size...Again My son has a digital point-and-shoot camera with an 18x zoom, but when you zoom to the extreme end, the viewfinder displays a message that it’s a digital zoom, and the resulting quality isn’t very good. Is it also true that zoom lenses on D-SLRs don’t work well at their maximum ends? My 200mm zoom telephoto has a 1.6x factor. How does this relate to the digital vs. optical zoom on my son’s point-and-shoot?
Tuesday, January 27, 2009
Don’t Take My Kodachrome Away
Scanning Kodachrome • Choosing Quality Lenses • Best ƒ-Stop Revisited • Large-Format Printing Q I’m using a Nikon Coolscan V to digitize some of my film images into versions I can display or market online. I choose good, technically correct slides to convert. Typically, E-6 images (Velvia, Ektachrome VS, Ektachrome G) look fine as .jpg or .tif files with little extra work. But I’m often disappointed with the results of scanned K25 or K64 Kodachrome slides. What should I do?
Marshall, North Carolina
Tuesday, December 2, 2008
Close And Personal
Close-Up Sharpness • Water, Sky And Time • Blue Sky Blues • Fine-Art Prints Is there a fundamental problem with using close-up filters on zoom lenses?
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