Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2023-03-25 13:24:23

Variants Auto Tone, Without available in full article

Levels and Curves for Higher Perceived Sharpness

Setting a black point and a white point can quickly enhance an image by boosting its contrast and making its colors stand out. After all, a digital camera can easily overexpose or underexpose.

The goal of setting a black point is to make areas of the image that should be very dark become dark, not washed-out.

The goal of setting a white point is to make areas of the image that are highlights be bright, not grayish dull tones.

Over and above correcting exposure issues, setting a black point and white point can be used for creative purposes to make an image look quite stark (for example), or very high key.

The tones between black and white can also be adjusted arbitrarily for more or less contrast, though such adjustments usually require modest adjustments to avoid looking artificial.

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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.

Levels dialog in Photoshop CS5

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