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I Turn it black If you use your flash, you ll throw so much light onto the primary
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subject that the background especially if it is more than a few inches away from the subject will be black This is a good effect in certain situations, but it doesn t look particularly natural That s why many professional macro photographers avoid using flash units when shooting flowers in the field
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How to Do Everything with Your Digital Camera
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I Use a plain background You can insert a prepared background a piece of poster
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board, for example between the main subject and a distracting background If the poster board is far enough away, it ll be out of focus and give you a plain, diffused look I use big slabs of colored foam board from the local hobby and craft store for this purpose
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I Blur it out of existence As I have already mentioned, depth of field is perhaps your
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most powerful tool when taking close-ups You can check how much depth of field you currently have by half-depressing the shutter release The camera s LCD display will show you the image with the aperture closed to the appropriate level, and that will give you your final depth of field If you need more or less depth of field, let go of the shutter release and tweak the camera settings Just check your depth of field over and over in the camera s display until you are happy with the result I took the image shown in Figure 5-10 with a very wide aperture to blur the background while keeping the monk s head flower quite sharp
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Beware of the Flash
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You might start to get the impression that I am not a big fan of the electronic flash unit built into many digital cameras Flashes that have limited range can make your pictures look artificial, and sometimes create harsh shadows Nonetheless, flash units are admittedly an essential tool, and I don t hesitate to use them when needed On the other hand, you should be aware of two key limitations that may be inherent in your camera s flash unit when used in close-up photography:
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I Overexposure Unfortunately, some digital camera flash units are not designed for very
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close range When you re taking a close-up (and you re within, say, a few inches of your subject), some camera flash units badly overexpose the subject These flash units expect the subject to be several feet away and don t react well when the subject is much closer
CHAPTER 5: Taking Close-Ups
FIGURE 5-10
This image was taken with a very wide aperture and no flash
You can find out if your camera suffers from this problem very easily Just take a test picture or two and evaluate the results Of course, there are workarounds to this problem You can try underexposing the picture using the EV controls on your camera, or try a low-tech solution: lay a piece of thin tissue in front of the flash to diffuse the light
I Blockage Some flash units are positioned so that the lens itself blocks some of the
light when the subject is too close to the camera In my book, this is a camera design deficiency, plain and simple Nonetheless, if your camera is affected by this particular glitch, it s easy to see for yourself As in Figure 5-11, there will be a huge shadow in part of the picture where the lens got in the way of the flash Ordinarily, your camera may not suffer from this problem, but may become prone to light blockage if you add snap-on lenses
How to Do Everything with Your Digital Camera
FIGURE 5-11
Some cameras block the flash when the subject is too close; if yours does this, use only natural light to illuminate your subject
Shooting Through Glass
Sometimes you might want to take a close-up of something that is under a sheet of glass jewelry in a display case, for example There s a common problem with this kind of subject, though: light from the sun or overhead lamps can reflect off the glass and cause unwanted glare in your picture Not only is glare like this ugly, it can actually make it difficult to see what it is you were trying to photograph under the glass The solution Use a polarizing filter A polarizer does a few nifty things for your photograph, but the most important one is that it eliminates reflections caused by glass and water by blocking polarized light Polarizing filters are sold in many sizes and for many digital cameras It s not a bad idea to carry one in your camera bag for those occasions when it might come in handy Polarizers are usually two-piece devices that rotate on the end of your camera you turn the outer layer until the reflections are minimized You want a circular polarizing filter You probably won t have trouble on that count, since most photographers today buy circular polarizers But a less-common linear polarizer simply won t work right for you, because it confuses the camera s light sensors
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