Wonderful world of photography - Aperture, f:

Here's a little demonstration of what your aperture, or blenderåpning in Norwegian, from hereon called f:, does to depth in your photo. You may first want to read more about f:

Norwegian: https://no.wikipedia.org/wiki/Irisblender
English: https://en.wikipedia.org/wiki/Aperture

I used a Sony NEX 3 mirrorless camera with an lens adapter and a Rikenon f:2 (1:2) 50mm manual lens shown here at 3 different aperture settings:

f: 2.0

f: 4.0

f: 16.0

Did you follow the link above and update yourself on aperture? Here's what happens to depth when f: is changed in a photo. The first object is placed 20 inches from the lens and the following object's are placed in 8 inch steps.

f: settings are: 2 in the first photo and continues with: 2.8 - 4 - 5.6 - 8 - 11 and finally 16:

Smaller aperture (smaller opening but higher f: number) adds depth to your photo but demands better lighting conditions. (Less light demands larger Aperture which is a smaller f: number).

Or in other words, you could think of aperture number as a measure for how much light you need. High number needs lots of light and low number, not so much).

Aperture priority setting was used in these photos. The photographer, that would be me, manually sets the aperture and the camera decides the shutter speed.

HAPPY MOTORING!