EXCERPT page containing first few paragraphs. 2018-07-16 11:23:40
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Blue/violet light is the most difficult to correct, hence Canon’s marketing of the 35/1.4L II makes a point of discussing the “Blue Spectrum Refractive Optics element”. It makes sense to put the Canon 35/1.4L II to the test on a challenging scene in which blue light predominates.
This scene looks at contrast and sharpness, plus correction for color aberrations under very blue mountain lighting with a glimmer of warm reflected yellow light. There is much near-to-far depth, and thus depth of field cuts through the scene in a shallow zone.
Also present is a wide dynamic range from dark shadow areas to bright bleached wood against those areas. Along those boundaries, the contrast mercilessly reveals any haze or halos, particularly with a lens that has difficulty in the blue/violet area of the spectrum. Blue/violet light is the most difficult area of the spectrum to correct, hence the violet fringing so often seen with many lenses on high contrast areas.
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