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Example: Sensor Size and Focal Length (Bottles)

For the same angle of view, smaller sensor cameras require shorter focal length lenses. Shorter focal lengths offer more depth of field at any fixed f-stop, leading to a format-equivalent f-stop and depth of field.

One of the major creative drawbacks of small point and shoot cameras is the impossibility of smoothly-blurred backgrounds; no point-and-shoot camera offers an f/1.0 or even f/1.4 lens, so the possibilities for subject isolation are severely limited. Even with many APS-C sensor cameras (relatively large), few if any lenses exist to offer equivalent blur capabilities for the format size (e.g., f/1.0 on APS-C to achieve the same blur as f/1.4 on full frame).

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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.

Entire frame comparing FX (full-frame) to DX (2/3-frame)

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