There are three things that will affect Depth of Field and
consequently, how blurred your backgrounds are. They are:
1) Aperature. You will have achieve the shallowest depth of field
using the most open aperatures. Lower F number=wider aperature
opening=lesser depth of field.
2) Focal length. You will achieve the shallowest depth of field
using the longest focal lengths. Higher zooming=shallower depth of
field
3) Camera-to-subject distance. You will achieve the shallowest
depth of field as you get closer to your subject (as your
camera-to-subject distance decreases.)
So to get the shalowest possible depth of field, you would want to
be at full zoom, with the most open aperature (smallest F number)
and at the minimun distance you can be to focus on your subject.
This will blur your background the most.
Now having said all that, it should be mentioned that it is not
always possible/desireable to go for the absolute shallowest depth
of field. There are optical distortions associated with wide-open
aperatures, for example, and there may be creative reasons also for
not doing this. Still, it will get you maximally blurred
backgrounds.
Hope this helps. Also- I've got a bunch of macros on my web
gallery taken with my S30 if you'd like to take a look. Feedback
would be appreciated.
Regards,
Brian
I've had the S45 for a month now and am quite happy with all the
pictures I had taken so far. I'm new to photography and still
learning. What I like to know is how to take macro shot of flowers
with blurred background. Any help on this is appreciated. Thanks
in advance.
Godfrey
--
Brian
Gallery:
http://mywebpages.comcast.net/spiritmist/My%20Web%20Gallery/index.htm