Saturday, August 3, 2013

Re-acquainting With Your Camera- TV & AV

Today we continue to learn all the functions of our camera. We have already looked at the pre-set modes in Getting Re-acquainted With Your Camera and the Program AE mode in Getting Re-aquainted With Your Camera- Program AE. So to follow on from these in this post we are focusing on the TV and AV modes on the camera.

TV Action shots, TV= Time value. You can either freeze the action or create motion blur with the <TV> (Shutter-priority AE) mode on the Mode Dial.

Set the desired shutter speed by turning the dial to the right setting a faster shutter speed, and turning it to the left sets a slower one. To freeze the action or moving subject use  fast shutter speed such as 1/500 to 1/4000 sec. Or to blur an active child giving the impression of fast movement use a medium shutter speed such as 1/60 to 1/250 sec and follow the moving subject through the view finder. If you use the telephoto lens, hold it steady to prevent camera shake. To blur running water use a slow shutter speed such as 1/5 to 1/15 and using a tripod will prevent camera shake.

(Unfortunately my tripod is still in storage,
so there is a little camera shake but I just had to make do.)

*If you exceed the adjustable aperture range, the aperture display will blink to indicate that the standard exposure cannot be obtained. If the exposure will be too dark, the lowest aperture value will blink. Turn the dial to the left to set a slower shutter speed or increase the ISO speed and vise verse.

(My Dad will be impressed that his "prized" mandarin tree made the blog.)

AV Aperture-priority AE: Changing the depth of field, AV = Aperture Value which is the size of the diaphragm hole inside the lens. To obtain a blurry background or to make everything near and far look sharp, set the mode dial to <AV>.

The higher the aperture value, the sharper the picture will look with a wider depth of field. Use the dial to adjust the value. The larger the f/number, the smaller the opening will be. A higher aperture value will make the shutter speed slower. Under low light, the shutter speed can be as long as 30 sec. In such cases, increase the ISO speed and hold the camera steady or use a tripod.

The depth of field depends not only on the aperture, but also the lens and subject distance. Since wide-angled lenses have a wide depth of field, you need not set a high aperture value to obtain a sharp picture from foreground to the background. On the other hand, a telephoto lens has a narrow depth of field and the closer the subject, the narrower the depth if field. A further subject will have a wider depth of field. If you exceed the adjustable shutter speed range, the shutter speed display will blink to indicate that the standard exposure cannot be obtained. If the picture will be too dark, the 30sec shutter speed display will blink. If this happens, turn the dial to the left to set a lower aperture value or increase the ISO speed and vise verse.

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