Although the depth of field is of major importance in photography, equally important is how much blur there will be in a shot and which of two or more lenses has the best ability to blur the background. To find that out all it takes is some simple math.
The HowMuchBlur tool was created bij Gijs de Koning and is an interactive tool in which you can compare the bokeh and background blur of different camera's (crop factors) and lenses in varying combinations of focal length vs f-stop vs distance subject to background. You can add multiple lenses and compare the results in a graph.
A very handy tool. Highly recommended.
howmuchblur.dekoning.nl
The HowMuchBlur tool was created bij Gijs de Koning and is an interactive tool in which you can compare the bokeh and background blur of different camera's (crop factors) and lenses in varying combinations of focal length vs f-stop vs distance subject to background. You can add multiple lenses and compare the results in a graph.
A very handy tool. Highly recommended.
How much blur?
Bokeh Calculator - A tool to compare lenses in their ability to blur the background. Hosted by Gijs de Koning
