Ken,
I like the pear tree image you posted later.
When you refer to pixel viewing, what magnification are you referring to?
Something greater than 100 %?
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: "Ken Norton" <ken@xxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Monday, March 26, 2012 7:45 PM
Subject: [OM] Big Chomp No Chew
> I've almost decided that I've bitten off something larger than I can
> chew. Here's what I did:
>
> I wanted to do a bokeh comparison test of several lenses. On the E-1.
> I do consider the crop-sensor format a viable point of reference
> because most poeple are now using the OM Zuikos on Four-Thirds and
> Micro Four-Thrids cameras. So, I take the camea, mount it on a tripod
> and photograph what I think is a flowering pear tree in a strong wind.
>
> Yeah, the wind, but for bokeh testing, that's really not an issue.
>
> I shot the 50mm lenses at 1.5m from the tree and included a sidewalk,
> bench and another tree in the background. For the 100mm lenses, I
> backed off to 3m. The 200mm to 6m and the 300mm at 9m. Oh, and the
> 24mm was in there someplace too, but you get the idea.
>
> Then I repeated the test with the 50mm and 100mm lenses at 1m distance
> to the flowers themselves, making sure I had flowers in front of and
> behind the point of focus.
>
> So, I've been comparing the images of matching apertures...
>
> Where are the stinking differences? If I showed the images full-frame
> at 800 pixels width, you are really hard pressed to tell the
> difference between the 50/1.8 and 50/1.4, or the 100/2.8 and 100/2.0.
> In a full-frame presentation you really have to nitpick to see the
> differences and even when you do see the differences you are hard
> pressed to say that a picture is from one or the other. However, when
> you drop down to pixel viewing, the differences to become visible. In
> fact, much more than just visible!
>
> I'm looking for suggestions here. BTW, the differences are so
> significant that I just made a management decision regarding lens
> selection for my primary kit this spring.
>
> AG
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