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Resolving to the Sensor Resolution

Resolving to the sensor resolution means that the resulting image is as sharp as is technically possible from the sensor. This is usually not the case for a variety of reasons, but so long as the important subject matter is as sharp as the sensor allows, the photographer can be content.

Even if the full resolution cannot be utilized, more pixels can mean higher image quality.

A sensor has a pixel pitch which is simply the size of the light sensitive photosites, measured in microns (millionths of an meter). Most pixels are square (not rectangular as in the sense of a grid), so we simply say photosite size. Note that the light-sensitive area of a photosite might not occupy its nominal space on the grid; electronics required for the readout of the photosite also take space. The proportion of space occupied by the light-sensitive portion of the photosite is known as its fill factor.

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Diglloyd Making Sharp Images articulates years of best practices and how-to, painstakingly learned over a decade of camera and lens evaluation.

Save yourself those years of trial and error by jump-starting your photographic technical execution when making the image. The best lens or camera is handicapped if the photographer fails to master perfect shot discipline. High-resolution digital cameras are unforgiving of errors, at least if one wants the best possible results.

  • Eases into photographic challenges with an introductory section.
  • Covers aspects of digital sensor technology that relate to getting the best image quality.
  • Technique section discusses every aspect of making a sharp image handheld or on a tripod.
  • Depth of field and how to bypass depth of field limitations via focus stacking.
  • Optical aberrations: what they are, what they look like, and what to do about them.
  • MTF, field curvature, focus shift: insight into the limitations of lab tests and why imaging performance is far more complex than it appears.
  • Optical aberrations: what they are, what they look like, and what to do about them.
  • How to test a lens for a “bad sample”.

Intrigued? See Focusing Zeiss DSLR Lenses For Peak Performance, PART ONE: The Challenges, or (one topic of many) field curvature.

    
Resolving power depends on spot size and point spread function ( lens performance)

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