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I focused the camera at the woman’s head.
The background is somewhat out of focus, but not by an extreme amount.
Obviously you need a lens with a larger aperture on an Olympus DSLR to get the same shallow depth of field that you would get with a Canon 5D mk II. Unfortunately, Olympus doesn’t make such a lens.
[B]Let’s take some closer looks at this photo:
[/B]
Notice the red fringing around the tree trunk and the green fringe around the concrete. There is quite a bit of fringing!
Look at all those green fringes around the water in the above crop.
[B]Also Read: [URL=https://ciberamerica.org/how-big-is-a-chunk-in-minecraft/]how big is a chunk in minecraft[/URL]
[/B]In the photo below, I focused on the tree trunk (and then recomposed):
If the tree trunk were a six foot tall person, that’s about where he would be standing in order for you to get a full length portrait (head to feet) with a little bit of headroom.
As you can see, while the background is more out of focus than would be the case if you were using a p&s; camera, it’s not quite what you would get from a full frame camera.
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The crop above shows more weird green fringing in the bokeh.
In the crop above, we see that the tree leaves in the bokeh turn into little hard-edged circles. That’s generally considered an example of bad bokeh. A lens with good bokeh has a creamy blurriness.
[B]SPHEROCHROMATISM
[/B]
There is a special term for these color fringes in the bokeh, and it\'s called spherochromatism.
There are green fringes on the distant side of the focal plane, and magenta fringes on the near side of the focal plane. This lens has a really bad case of spherochromatism.
Olympus obviously designed this lens to perform really well on test charts (as it\'s very sharp and there\'s no chromatic aberration in the focal plane), but has ignored the issue of spherochromatism, which causes really ugly bokeh.
The review at dpreview.com talks about this lens’
“bokeh chromatic aberration at wider apertures.†That’s what the review was talking about, but I completely disagree with the reviewer\'s take that this problem has a
"relatively rarely impact on the normal uses of this lens." I bought the lens to use it wide open to get shallow depth of field, and I think that a lot of people buy this lens for the same purpose.
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