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Zeiss Touit 12mm f/2.8 Distagon

Flare Control

Flare control is outstanding in general (e.g., including the sun in the frame), but it is is possible to generate flare by deliberately choosing the worst possible situation: light striking the lens that is not image forming.

Inducing flare

This is a crop from the top left corner at about 50% of actual pixels. The rest of the frame is seeming unaffected (personal photo, so not shown in entirety).

The lens shade was mounted for this image. A deliberate attempt was made to induce flare by placing the sun just outside the corner of the frame, thus allowing extremely bright non-image-forming light to strike the front lens element at an acute angle.

Blocking the light with the tip of a finger or recomposing just slightly eliminates the flare completely.

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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.

  • Make better images by learning how to get the best results right away. For example, the best way to set up your Sony camera.
  • Save money by choosing the right lens for your needs the first time, particularly with the numerous lenses available for Sony.
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  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
  • 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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f/2.8 @ 1/160 sec handheld, ISO 100
Sony NEX-7 + Zeiss Touit 12mm f/2.8 Distagon

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