EXCERPT page containing first few paragraphs. 2023-10-01 21:56:06
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The MTF chart suggests a lens with outstanding performance showing exceptionally high contrast overall, as well as for fine details.
Most likely the lens peaks at f/4, but Fuji does not supply MTF charts for f/2.8 or f/5.6 or f/8.
Stop down to f/5.6 to retain all the goodness of f/4 but with more depth of field. Aperture f/2.8 is likely to yield the lion’s share of the performance to be gained by stopping down from f/2. Aperture f/8 wil show some loss of contrast, both overall and on fine details, but this should not be only a small concern— use f/8 when needed, but don’t use it if not needed, for maximum brilliance by sticking to f/4 - f/5.6.
Mouse-over the graphs to see f/2 change to f/4. S and M are sagittal and meridional (radial) contrast.
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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.
Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.
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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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