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Aperture Series: Big Leaf Maple
This aperture series is at a distance not too far from infinity focus, which is presumably the distance for which the 25/2 Distagon has been optimized.
Example — Big Leaf Maple among conifers
This image take deep in a canyon in the San Francisco Bay Area— very blue and dull light, using the 21MP Canon 5D Mark II, and Live View with a remote release.
Important: even with a 25mm lens, there remains a depth of field issue at far greater distances than one might assume, a gentle softness (e.g., 50 feet vs 30 feet). When viewing the crops, do not assume that less than sharp areas are a soft lens just because of distance. Field curvature and exact point of focus could easily favor things a bit differently with another try at the same scene. See Making Sharp Images.
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Diglloyd Guide to Zeiss offers comprehensive integrated coverage of Zeiss DSLR lenses for Canon and Nikon. Nearly a decade in the making, it covers everything you need to know for every lens in the ZF.2, ZE, Milvus and Otus lines. Guide to Mirrorless and Zeiss ZM rangefinder lenses in Guide to Leica.
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- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
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