2 TYPES OF YOGA for Man

There are two basic types of Yoga. One requires much practice, patience, and discipline

Yoga from India

And Then There’s Irish Yoga

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We can control the depth of this area by using different-sized apertures. A small aperture produces smaller circles of lights (called circles of confusion) so that the area that appears sharp to us is larger than when a wider aperture is used. Here we must remember that smaller apertures have larger numbers. Thus f/16 represents a small hole than f/5.6.

A simple exercise will soon demonstrate this principal to you. If you have a depth-of-field preview button on your camera, set the aperture on it widest setting and focus on something reasonably close ( 2 meters or so) using a standard lens. Looking through the viewfinder you will see the amount of focused image available at the maximum aperture of your lens. Now close the lens aperture down to f/8 and use the depth-of-field preview to check the difference. Whatever is in the background of your picture might not be entirely sharp, but objects should be a lot more recognizable then they were before. Now close down to f/16 and check the difference again. By opening and closing the aperture with the depth-of-field activated, you will be able to see immediately what difference the aperture makes to the amount of the scene you can render sharply.

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There is a little more to depth of field than the aperture, however. The two other elements you need to think about are the focal length of your lens and the distance of your subject is from the camera. Tn basic terms, the longer the focal length of the lens you are using, the shorter your depth of field; and the closer your subject, the shorter your depth of field. Conversely, for the maximum depth of field you should use a shot focal length lens (i.e. a wide angle) and focus on a subject that is a long way away.

You can use depth of field either to show the whole scene in front of you in focus or to highlights just a single object as the main subject by rendering it the only sharp point of the picture. It is a powerful tool and you need to think about every time you look through the lens.

p/s: See you all next post

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