Quote Originally Posted by powers_brent
The OOF blur seems more diffused with the 100mm lens.

Looks that way to me, too.


I think that is because the background is pretty close to the focal plane. If I understand things right, when the background is close, f number matters more. When the background is far, aperture matters more.


Quote Originally Posted by Daniel Browning


That's not the impression I get. Bob says:
<p style="padding-left: 30px;"] "While the quality of blur - bokeh - is in itself a "fuzzy" concept and
something that's quite difficult to predict or control, the quantity of blur can be
calculated quite easily and it's something over which the photographer has control through
choice of focal length and aperture."


To me it seems like he treats bokeh as quality only.


Yup, I agree with your interpretation of that quote. But he also says: "While "Bokeh" is a measure of both the quantity and the nature or
quality of background blur, this program only calculates the quantity."


Perhaps he is taking the precise definition of the word less seriously than we are []