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Case Study: Nailing the Ideal Zone of Focus using Focus BKT
Depth of field in a 3D scene is often far less than the scene demands.
Sometimes (not very often) the subject matter is shaped such that a tilt-shift lens can “cheat” the otherwise rigorous limits on depth of field. And if you have that lens and the focal length is right for the scene.
Sometimes (fairly often) focus stacking can be used when conditions allow. But too often there is subject movement that makes focus stacking infeasible eg wind and leaves/grass.
Focus where it counts, but how?
Traditionally, it was always about focusing to capture the most sharpness on the most important subject matter, letting other areas go softer. That is still the case today.
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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.
Fujifilm GFX100 II + Fujifilm GF 55mm f/1.7 WR @ 45.3mm equiv (55mm)
ENV: Colorado, altitude 8400 ft / 2560 m, 45°F / 7°C
RAW: Camera ASTIA, LACA corrected, vignetting corrected, WB 5000°K tint 15, +25 Whites, +10 Dehaze
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