Week 2 aperture excercise

Aperture

Aperture refers to the opening of the lenses diaphragm which allows light to pass through. Aperture is measured in f stops .a lower f stop means a larger opening , more light and a shallow depth of field , a higher f stop means a smaller opening , less light and a deeper depth of field.

Depth of field is the distance between the nearest and farthest objects in a scene that appear  sharp in an image.

as you can see in this example a small f stop equals a larger opening and a shallower depth of field

and a larger f stop means a smaller opening and a wider depth of field.

Narrow DOF= low f stop
Wide DOF= high f stop

Take a landscape photo with a wide depth of field
Because i used a wide depth of field meaning there was very little light let in because the opening is small so i had to lower my shutter to let in more light and balance my camera on a table.
Using a wide depth of field means everything in this image is in focus

f/22.0 Shutter speed 1/8 ISO100

Take a close up portrait using a narrow depth of field
Using a narrow depth of field i took a close up portrait of my subject meaning a small f/ . because its a narrow DOF my subject is in focus and the background is blurred.

 f/ 1.8 Shutter speed 1/1250 ISO100


Take a photo of an object with a narrow depth of field
You can see the difference between a narrow DOF and a wide DOF with these two photos of the water bottle.
Narrow allows the subject to be the focus point and the surrounding area to be out of focus.
i personally prefer a small f/ rather than a larger f/

f/4.0 Shutter speed 1/3200 ISO100


Take the same shot again this time with a wide depth of field
But with a narrow DOF although the water bottle is still the focal point the surrounding area is clear

f/22.0 Shutter speed 1/80 ISO100

Take a photograph with 3 elements one in the foreground one in mid ground and one in the back ground. focus on the element in the for ground . shoot this scene with the highest aperture and lowest aperture your lens will allow.

Using my lowest aperture i focused on the foreground and the mid and background are out of focus, this is narrow depth of feild creating dramatic effect to a simple picture of a candle.

shutter speed 1/160 f/4.0 ISO100

using my highest aperture all objects in frame are in focus

Take a photo of an object with a wide DOF and shoot the same scene using a narrow DOF

Shutter speed 1/100 f/22.0 ISO1000

Shutter Speed 1/320 f/4.0 ISO100

Take an environmental portrait with everything in the frame in focus.

 i used a mid f/ and shutter speed all the subjects and background and mid ground are in focus because ive used a f/ value that would capture it this way.  i love this photo of my uncles. 

Shutter speed 1/60 f/5.0 ISO 100