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Therefore, when shooting in macro, it is easy to get a shallow depth of field if utilizing a large aperture. We often make use of the F8, F11, F13 such small, and medium-sized aperture to look at photograph to ensure the photo has clear range. If you use a 100mm macro lens to shoot the insects' close-up, even with the F13 aperture, the depth of field is extremely shallow, and sometimes need to utilize the manual focus function to carefully adjust the focus position to spotlight your eyes of insects to make the image more vivid. 9. Their emotional appeal You have a flare for beauty. You love making people feel pampered and relaxed through beauty and spa treatments. Opening a spa business is the ideal however you do not know how to begin. You have your concept available. You know what services you are likely to offer. You even know that you wish to open your spa business.