It took me a while to grasp the how F-Stops and Apertures on DLSR cameras worked and when the best time to use the different options were. In truth the explanation of F-Stops is relatively simple and understanding it will help you to make quick and easy decisions as to what settings to use when photography wildlife out in the field.
I did a brief write up, however on further research I found this video which explains the notion of F-Stops and Apertures in far simpler terms. Take a look and then see below for a quick write up of what settings I typically use for landscape and wildlife photography out in the field.
For portraits of big cats and birds – f2.8 (f4.5/f5.6 depending on how good your lens is)
For giraffes and rhinos – f8.0
For elephants and tree portraits – f11
For landscapes – f16
For wide angle landscapes – f18
What settings do you use for different subject matters when out in the field? Let me know in the comments section below.