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On a Tripod With SteadyShot / Image Stabilization = Damaged Sharpness (Sony A7R, Through the Boulders)
This is a close range scene, which is always a challenge in depth of field terms. The key qualities one looks for are:
- Does the lens deliver a crisp and high contrast image at full aperture that is free of veiling haze (longitudinal chromatic aberration or spherical aberration)?
- Does the lens quickly and steadily improve in depth of field with stopping down, and without any focus shift? In other words, does it quickly achieve a tight point spread function so that real depth of field is quickly gained (vs theoretical).
The “veiling haze” concern is particularly of concern at dusk, where blue light can predominate.
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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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