EXCERPT page containing first few paragraphs. 2023-12-06 15:37:04
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Focus Bracketing Study (Canon 5D Mark III, 40mm f/2.8 STM)
Shot with the Canon 5D Mark III at ISO 100 with the Canon EF 40mm f/2.8 STM.
This aperture series has several instructional goals applicable to any lens:
- How does the Canon EF 40mm f/2.8 STM perform over its range of apertures at ~infinity focus?
- Where should focus be placed for a distance scene like this?
- Are f/16 and f/22 useable apertures on the Canon 5D Mark III, a 22-megapixel DSLR?
Tioga Pass area
This scene is near Tioga Pass, just outside Yosemite National Park. The slop across the road is the base area of Mt Dana.
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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.