Use small apertures and slow shutter speeds to gain depth of field, making the image appear sharp.Note that while you will increase the sharpness of stationary objects, elements such as wind-blown grass or leaves or flowing water may appear blurred if you are using long exposures. This effect can be attractive in some compositions, but it can also ruin shots that are meant to be razor sharp.
If you are shooting a landscape and want everything in the image to be track sharp, choose a small aperture to gain the greatest depth of field (f/16, f/22, etc.) But if you are shooting birds or wildlife, you may want just the subject to be in focus. Here you will need to use a larger aperture (f/5.6 or lower) for a shallow depth of field.
The longer the lens, the less depth of field—in practice. Wide angles have more depth of field and telephotos have much less—in practice.
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Macro Lens --> 60mm f/2.8 or a 100mm f/2.8.
WideAngle lens --> 10-22mm or a 12-24mm lens.
100-400mm comes into its own. A lighter alternative is the 70-300mm lens
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To compose your perfect image
1) Rule of Third
2) Straighten UP
3) Frame ur shots
4) Lead by lines
5) Sink to Level
6) Find fresh angles
7) Make the object to look into the frame
8) Sense of scale
