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Tech Tips

Tech Tips

OP Expert George Lepp tackles your technical photography questions in Tech Tips.


Monday, April 14, 2008

Best Digital B&W

When using a digital camera, is it better to get black-and-white photos by capturing in color, then processing as black-and-white, or by capturing the shot with the black-and-white setting in the camera?

Tuesday, April 1, 2008

Slicing Up Depth Of Field

Formulas And Focus • Size, Weight And Will it Float? • From JPEG To RAW • Charging Overseas Without A Charger • Bifocal Focus

Formulas And Focus
I shoot a lot of wildflowers and have tinkered a bit with Helicon Focus Software. The main objective is, of course, the soft background with a sharp subject. Do you have any formulas for the number of slices at various magnifications? I use a Really Right Stuff focusing rail and a Canon 90mm tilt/shift with and without extension tubes.

Tuesday, March 11, 2008

Keeping Sensitive To IR's Needs

Tripping With Infrared Film • Running Out Of Walls • How To Go Pro • Waiting For Long Exposures

I’m traveling to Patagonia, and I want to carry 35mm infrared film. What suggestions do you have regarding how to get it through international (Argentinean) security? Will they absolutely insist that the film be removed from the canister?

Monday, December 17, 2007

Tele-Polarizers

Would you recommend the use of a drop-in polarizer with the Canon 400mm ƒ/2.8 for wildlife or landscape photography?

Monday, December 10, 2007

Reflecting On Reflections

Do you have any suggestions on photographing through glass at museums? I want to capture a dinosaur exhibit.

Monday, December 3, 2007

Do-It-All Telephotos

I can only afford one long telephoto for bird photography. Is there a particular focal length that’s more versatile than others?

Saturday, December 1, 2007

Getting Vertical

Vertically Challenged • Maximum Quality Formula? • A Little Night Action • Filtering The Sky • Park Photo Permits

I understand how to properly expose horizontal panoramas using a leveled tripod and leveled camera, but how do I get precise vertical panoramas when working from a tripod?
J. Forest
Cedar City, Utah

Monday, November 19, 2007

When You Need Three

The airline restrictions on carry-ons (one piece, plus a personal item) make it difficult to fly to a photo destination, especially when traveling with a photo backpack, a long lens and a computer. What do you recommend?

Monday, November 12, 2007

Ready In A Flash

When I’m photographing with a macro flash system, I find that the flash recycle times are too long. The critter has stopped doing what it was doing or left the flower. How do you deal with this problem?

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