Just a quick note that the Schneider LS Blue Ring line now includes updated 75-150LS and 40-80LS lenses.
Both were already exceptional lenses in their pre-blue-ring incarnations; the optics remain unchanged from those incarnations. The migration to blue ring includes:
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serialization (the XF can store the focus calibration per serial number, rather than per model; mostly important for production houses and rental studios that have more than one of each focal length)
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build quality and ergonomics (laser etched barrel rather than rubber), metal metal everywhere
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even better quality control and tolerances as Team Phase One continues to raise the bar for their production line
More details and sample files from these lenses can be found here:
Schneider LS Blue Ring Zoom Lenses
