EXCERPT page containing first few paragraphs. 2016-10-24 14:54:36
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June 2013 lens sample, which suffered from poor flare control.
These examples shot in the White Mountains of California and Yosemite National Park.
The intent of this series was to explore sharpness at wider apertures, but even more so to explore subject separation and bokeh possible at wider apertures, the ƒ/2 maximum aperture being handicapped by a full stop versus the 50/1.4 Summilux and two stops over the 50/0.95 Noctilux.
In general, subject separation is often degraded by field curvature: an uneven sharpness curve (non-planar) distracts by making mid-zones or edges/corners sharper forward or back of the nominal plane of focus; the Noctilux could almost be said to be notorious in this regard, with its rearward sharpness curve to the edges and corners (see the Garlic example).
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