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Tech Tips

Tech Tips

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


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?

Monday, November 5, 2007

More Duping

I’m still shooting film, though the switch to digital seems inevitable. I’ve been considering purchasing a Nikon Coolscan film scanner to convert slides to digital files and start learning Photoshop. Some of my older slides are Kodachrome; I read recently that Kodachrome doesn’t scan well because of the high silver content, and that Digital ICE doesn’t handle it well. Is the problem with the scan or the ICE process? Can ICE be switched off when scanning?

Thursday, November 1, 2007

Best Polarizer Techniques

A Polarizing Topic • Digital Duping Vs. Scanning Standards? • Cheaper Presentations

Most of the time, I leave my polarizer on the lens. I’ve been told that isn’t a good idea. When should I have it on and when should it be stored away?

Monday, October 29, 2007

The Focal Lengths Of Macro

I want a macro lens, but I don’t know which to choose. I see that there are three sizes available from Canon: 50mm, 100mm and 180mm. Which is best?

Monday, October 22, 2007

Blue/Gold-Gold/Blue

A friend told me about a polarizing filter that imparts color to the image. Where would you use this kind of filter? Does it make sense to use a filter like this if you’re photographing in digital and can add color in Photoshop?

 

 


Monday, October 1, 2007

ISO & Digital Image Quality

Lowest ISOs • Blowin' In The Wind • Stacking Tele-Extenders • Performance In Cold Environments

I’ve noticed that many of the Nikon cameras, such as the D100, have a starting ISO of 200, while Canon digital cameras start at ISO 100. Is there a difference?
Sal
via the Internet

Saturday, September 1, 2007

Memory Card Sizes

Is Bigger Better? • Windows Or Mac, One More Time • Full-Frame Dust • Preserving RAW Files

I’ve been shooting with a 10.2-megapixel digital SLR for a few months. I have two 4 GB CompactFlash cards. As I go on safari, I’ve considered getting a couple of 8 GB cards so I won’t have to change and download so often when doing a lot of shooting. Now I’m hearing the 8 GB cards aren’t as good. If this is a fact, what’s the problem?


Saturday, September 1, 2007

Landscape Lenses

Focusing On Focal Lengths • Cave Photography • What You Should Bring • Tilt/Shift Lenses For Landscapes

One of the questions asked most frequently at my seminars is, What’s the most desirable focal length for landscape photography? I always answer that I use all focal lengths, and I tend to use the extremes—long telephotos and extreme wide angles—quite often. It’s all about perspective. If we can show the scene to the viewer in a different way than they see it on a day-to-day basis, there just might be a reason for them to look at our pictures.

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