What is … Aperture?

When I first started photography, waay back…3 years ago or so… I always got confuse with aperture and f-number. Why is it that the bigger the number the smaller the aperture?

Basically, an aperture is an opening in the lens body that allows light to enter through from one end to the other end. It controls and limit the amount of light that can squeeze through.

While the f-number is basically the lens’s focal length over the aperture diameter of opening. As an example, I think the calculation goes like this, a  fixed lens with the focal length of 50mm and a maximum f-number of 2 (f/2) would be able to open the aperture as widely as




Aperture opening effects, among other, the depth of field of a particular scene. The wider the aperture opening (or the smaller the f-number), the wider the depth of field is.

p/s: somebody corrects me if I’m wrong


About Amryl Malek

A photographer on a journey to find his vision
This entry was posted in General Photography, Thoughts and tagged , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s