Depth
of field will be extremely shallow
That is, the area that is in focus
will not be very deep, which means that your point of focus will be critical.
If you don’t focus specifically on the area that you want sharp, then it might
very well end up out of focus, due to shallow depth of field. This can be
particularly tricky if you’re trying to shoot something that’s moving, such as
a flower on a windy day.
If you have the right controls, try going to a smaller
aperture to get deeper depth of field. Note, though, that even at f8 or f11,
you’ll still have very shallow depth of field.
If you have Photoshop CS5, and you’re shooting a still
subject and have some time, you can shoot multiple shots, each focused to a
different depth, and Photoshop can combine them into a single, final image with
deep depth of field. Use the same PhotoMerge feature that you use for stitching
panoramic images.
Understand your camera’s macro feature
Some point-and-shoots require you to be within a specific
focal length before they can focus. Usually, this is in the middle of the
camera’s zoom range. So, don’t think that you can go into macro mode, and then
zoom in real far to get even closer. Odds are, you’ll have to be zoomed out a
bit. (The macro mode is usually indicated by a flower icon on cameras.) Learn
more about what a camera's macro mode really does.
Move rather than zoom
If you want a particular crop on your image, it will be
easier to move the entire camera in and out than to try to make small, fine
zoom adjustments, because even a tiny amount of zoom will result in a big
change in your image. Also, if you’re finding your camera can’t lock focus, try
pulling back a small amount.
Don’t take just one
Because focus can be difficult, take multiple shots of the
same frame. This will give you a better chance of ending up with a shot that’s
in focus, with the depth of field you want. Some point-and-shoots have a “best
shot selector” feature, which automatically shoots a burst of images, selects
the sharpest of the bunch, and then discards the rest.
Don’t block your light
One tricky thing about macro is that, once your camera’s in
tight, you might cast a shadow on your subject. If you have Live View, you can
probably get you and your camera into a position where you’re not casting a
shadow. However, you may have to stand farther back and zoom in to completely
eliminate your own shadow. You can try to combat shadows with flash, but this
can be tricky because, up close, the flash can overexpose your scene and wash
out all detail. If your camera has a flash exposure compensation control, you
can try to reduce the brightness of the flash, or move the camera farther back
to reduce the impact of the flash.
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