That helps you move the camera around and position it with minimal fuss. This is really up
to you??”try leaving the head a little loose, and if you can consistently get sharp images, work
this way. If you find that your images are always a bit blurry and you think it??™s because you??™re
leaving the head unit loose, then tighten everything up before you take your picture.
Here??™s a perfect example: In Figure 6-7, you see a bee that I photographed hovering around
a columbine. If I had tightened down every knob and lever on my tripod, there??™s no way I could
have caught the little guy as it flitted around somewhat randomly. Instead, the tripod gave me the
support I needed, and I left the head unit loose so I could move the camera around to catch the
bee at just the right moment.
Keep the Subject Sharp
In Chapter 3, I spent a lot of time talking about depth of field. If there was ever a time when
depth of field was important, this is it. The reason? At high magnification in very short focusing
distances, depth of field becomes vanishingly small. In fact, it??™s not unusual to find that the total
FIGURE 6-7 A loose tripod head comes in handy when you??™re taking pictures of moving
insects.
130 How to Do Everything: Digital Camera
depth of field in a close-up photograph is only about half an inch.
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