Showing posts with label aperture. Show all posts
Showing posts with label aperture. Show all posts

Wednesday, August 22, 2012

Silhouette Photography.

A silhouette is an outline of an object or person :

Come, hold my hand!

Lit from the back all details of the subject are in shadow.

To get good silhouette pictures :

  • Shoot facing the light with your subject in the middle. 
  • Choose Spot or Partial Metering Mode at the bottom of Quick Control Screen. 
  • Turn off the flash as it will illuminate the dark areas which we want to remain black. 
  • Turn Mode Dial to Av or Aperture Priority Mode and choose a large F number.
  • Press shutter button halfway and turn the Quick Control Dial till the exposure meter mark is in the negative area.This will darken the silhouette more.


Lovers sunset!

Shooting in Manual Mode made easy.

To shoot in manual mode follow these steps :

1. Set the Mode Dial on the top left of the camera to 'M'.

Dialed In

2. Compose your shot and choose a F number (aperture). If it is a landscape or still photo depending on whether you want the focus on the foreground or the background or on both. Choose a small F number for portrait shots or a big F number if you want everything in the picture to be in focus. Turn the Quick Control Dial on the back of your DSLR to set the aperture. This is the outer dial surrounding the 'SET' button as shown below :

Photobucket

3. Focus the subject by placing the AF point in the viewfinder on the subject and pressing the shutter button halfway. You will see the exposure scale at the bottom of the viewfinder and on the LCD panel at the top of your DSLR. This is a scale with -1, -2 and -3 to the left and +1, +2 and +3 to the right of a central black mark. Below the scale will be a moving exposure level mark indicating if the image is under (to the left) or overexposed (to the right).

4. Set the exposure by moving the top (or Main) dial just behind the shutter button in the direction indicated by the exposure level mark. Keep rotating the top dial to set the shutter speed until the mark reaches the center of the scale.  In  the picture below you can see the arrow pointing to the left of the -3 mark.

Photobucket

Rotate the Top Dial just behind the shutter button :

Photobucket

in the direction of the arrow till the mark moves back to the center :

Photobucket

5. Depress the shutter button fully to click your picture.

Check your picture on the LCD monitor of the camera. If overexposed take the same shot but rotate the top dial till the exposure level mark is at -1 or -2. Then click again to get an underexposed image. If the picture is too dark then rotate top dial till the mark is on +1 or +2 or anywhere on the plus side of the scale.

Happy shooting!

Tuesday, August 21, 2012

What is the F number?

Most newcomers to photography are confused by the F number setting.  To put it quite simply follow this decision tree :


1.  Decide what parts of the image you want to have sharply focused. Here is a picture of a boy at nightime :

IMG_6939w

Since I wanted the model to be in sharp focus with the background nicely blurred I chose F1.8 as my aperture. Larger the aperture gives a smaller depth of field (DOF).


2.  Smaller the F number bigger is the aperture. This is because the aperture size is measured as a fraction with the denominator as the F number. Hence aperture of F/4 is smaller than  F/2.8.


3.  Checkout the picture below :

IMG_4283w

I wanted all the pillars to be in sharp focus so I increased the F number to F/6.3. Both foreground and background is sharp.


4.  Larger the F number gives a bigger depth of field.


PHOTOMANTRA : Small F numbers for portraits.