Tech Tips
OP Expert George Lepp tackles your technical photography questions in Tech Tips.
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).
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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?
M. Thompson
Via the Internet
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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?
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Local Knowledge
Knowing a location well can get you into the right place at the right time
 I’ve said it before, and I’m here to say it again. Get to know a landscape! Get to know your landscape, a favorite location where you can return often in all kinds of light and weather and season. Hopefully, this will be a place nearby where, by looking out the window and checking the weather, you can best anticipate the chances of good conditions. If you want to become a better landscape photographer, study a favorite location.
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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?
C. Toops
Marshall, North Carolina
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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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Keeping Gear Safe
ATV Camera Transport • Not All JPEGs Are Equal • Out, Darned Spot! • Worn-Out Imaging
 I live in southern Utah where there’s an extensive ATV trail system and the possibility for some unique photographs.
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Time For Your Close-Up
More Macro • Matching Backups • Image Card Rescue The Best ƒ-Stop • Glass Beads Vs. Matte • Live View New
 I have a 180mm macro and extension tubes, and I’m considering purchasing a 65mm macro. What kind of benefit would it really offer in terms of improved magnification and/or quality?
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Getting The Most Out Of Fall Color
Autumn Color • Bracket, Bracket, Bracket • Edit, Edit, Edit • Finding The Problem
 Fall is here, and my past experience is that I never come back with the brilliant leaf colors that were before my camera. Do I need special filters on my lenses, or is it all done in Photoshop?
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