Depth of Field, as we know, is how much is in acceptable focus in from of and behind the area we focused on. I think it would be a lot clearer if it was called Depth of Focus. Anyway - most people quickly understand that one way to control it is by selecting the appropriate aperture for the amount od "dof" that is desired. But, focal length used is also a factor. Here are two shots. Both taken with the Fuji 50-140mm F2.8. 1. Taken at 50mm and F/2.8. Focused on the bell. 2. For this one I've stepped back and zoomed in to 140mm, still at F/2.8, to get about the same amount of handlebar in. Two things you'll notice... • There is less background • There is less depth of field - there is slightly more blur to the background. • The objects in the background appear closer to the focus point. Look at the green crossbar.
This is the trouble I had folk aren't viewing the thread again once they have viewed it previously, Love the shot by the way.
In most cases out of focus foregrounds don't work very well. But they can when using a shallow depth of field to isolate a subject
