diglloyd.com: Pages for “point spread function”

Digital Sensor Technology

Digital capture technology is discrete, and not the same as film..

Resolving to the Sensor Resolution

Optical Aberrations and Behaviors

Understanding the various optical aberrations and behaviors..

Voigtlander 20mm f/3.5 Color-Skopar

Very compact ultra wide angle..

Examples—20/3.5 Color Skopar aberrations

Sigma 24mm f/1.4 DG HSM Art

Sigma’s fast high performance wide angle..

Aperture Series: Huge Barn Interior (Nikon D810)

Sigma 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

Near/Far Focus Series: Tuolumne River Cascade (5D Mark III)

Sigma 85mm f/1.4 DG HSM Art

Sigma’s best portrait lens..

Aperture Series: Extreme Adverse Lighting: Saddlebag Lake Reflections (Nikon D810)

Nikon AF-S Nikkor 20mm f/1.8G

Nikon’s fast ultra wide angle..

Aperture Series: Sparkling Lake (D810)

Fujifilm GF 45mm f/2.8 R WR

Moderate wide angle equivalent to 37mm f/2.3..

Point Spread Function (GFX 50S)

Milvus 85mm f/1.4

Outstanding build and optical quality in a medium tele..

Aperture Series: Dead Tree in Dark Creek (Nikon D810)

15mm f/2.8 Distagon

Ultra high performance in an extreme wild wide angle lens..

Aperture Series: Pine Creek Stormy Light (Nikon D810)

ZF.2/ZE 21mm f/2.8 Distagon

Brilliant imaging, even wide open, but with a few quirks. (Review in progress) .

Aperture Series: Pine Creek Stormy Light (Nikon D810)

Otus 28mm f/1.4 APO-Distagon

Fast high performance APO wide angle..

Astrophotography

Otus 55mm f/1.4 APO-Distagon

Ultra high performance apochromatic normal lens, first in the Otus line..

Secondary Color Aberrations and Point Spread Function vs 50/2 Makro-Planar + Canon 50/1.2L, 50/1.4 (5D Mark III, Barn Interior)

Nikon NIKKOR Z 20mm f/1.8 S

Fast ultra wide angle for Nikon Z..

Aperture series: Sunlight After Rainstorm at Conness Lake 3

Nikon NIKKOR Z 24mm f/1.8 S

Fast wide angle for Nikon Z..

Aperture Series: Sunlight Breaks Through Storm Clouds

Nikon NIKKOR Z 24-70mm f/2.8 S

Fast mid-range zoom expressly designed for Nikon Z cameras..

Aperture Series @ 24mm: Beaver-Gnawed Log by Lichenized Boulder

Sony FE 24mm f/1.4 GM

High performance wide angle..

Sony FE 85mm f/1.4 GM

Top-grade medium telephoto..

Aperture Series: Running Creek

Zeiss Loxia 25mm f/2.4 Distagon

Outstanding wide angle, superb performer..

Shootout: Zeiss Loxia 25/2.4 vs Sony 24/1.4 GM: Beaver-Gnawed Log by Lichenized Boulder (Sony A7R III)

Zeiss Loxia 35mm f/2 Biogon

Manual focus moderate wide angle for full-frame mirrorless..

Aperture Series: Sparkling Sun on Lake (Evaluating Point Spread Function)

Zeiss Batis 85mm f/1.8 Sonnar

Autofocus portrait lens for Sony full-frame mirrorless..

Aperture Series: Sculptured Elegance (Sony A7R)

Zeiss Touit 32mm f/1.8 Planar

Normal lens for Sony NEX or Fujifilm X..

Examples: New York City (Evening on the High Line, Sony NEX-7)

Leica 28mm f/1.4 Summilux-M ASPH

Leica’s fast 28mm..

Aperture Series: Backlit Snowy Meadow (Leica M10 Monochrome)

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