Apature Control Task

The task is to take photographs which demonstrate slow shutter speeds, fast shutter speeds, narrow depth of field and wide depth of field.  I managed to get quite a few decent shots on a family walk the other day and hopefully they demonstrate each of the elements of the task well.

Wide Depth Of Field



f/22     1/20sec     iso 200



I am happy with this picture, it seems to be lit well and not over exposed in the sunlight.  A high apature has left the whole image in focus and the low iso makes for better detail.

Narrow Depth Of Field



f/4.5    1/400sec    iso 400



The low apature has made the background blurred and only left the subject in focus.  A quicker shutter speed was used to limit the amount of light that hit the sensor and componsate for the wide apature.

Fast Shutter Speed



f/5.6    1/250sec    iso 200



I was reasonably happy with this picture,  my dog Abbie was running backwards and forwards at full pace so I tried to capture her mid run.  The reason I am a little displeased with the shot is because I feel I should have used a faster shutter to make the image sharper.  The reason why I kind of got away with it is because she is running almost head on so the variation in movment is less great than if I was standing to the side.

Slow Shutter





f/10    30sec    iso 400

No marks for originality here but after seeing a photograph of Parliament at night with the traffics' lights whizzing past I decided to do my own less good version.  It was the best way I could come up with to demonstrate a slow shutter.  I used the slowest shutter option available without going into bulb mode so the lights would stream continuously.  The mid range apature let in enough light to the sensor without compromising on the focus.  I am not too pleased with the picture because I made a school boy error, I used a tripod but forgot about the time delay function on my camera so I got a bit of shake.