Should I get the Oly 75mm?

Started Apr 29, 2013 | Discussions thread
Anders W
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Re: The 45 1.8 focuses much closer so...
In reply to marike6, Apr 30, 2013

marike6 wrote:

The Olympus 45 1.8 focuses down to 1.64' (0.5 m), and the Olympus 75 1.8 focuses down to 33.07" (84.00 cm).  So the 45 1.8 will give you more shallow DOF, no?

Both have a max magnification of about 1:10 so the DoF at the closest focus distance will be roughly the same.

But that's hardly the point here. The point is that the 75 will provide more background blur at the same DoF due to the fact that it magnifies the background more at the same subject magnification. See here

http://toothwalker.org/optics/dof.html

under the heading "Background blur" for further details and an illustration.

MrScorpio wrote:

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