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Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.

  • Make better images by learning how to get the best results right away.
  • Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.
  • Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
  • Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Nikon or on Canon or on Pentax.

Nikon Mount Lenses

Nikon AF-S 200mm f/2 VR (v1)

Ultra fast 200mm with gorgeous bokeh

180mm Lenses for the Nikon D3x

Explores options for 180mm lenses on the Nikon D3x, including the Leica 180/2.8 APO-Elmarit-R in Nikon mount, Nikon 180/2.8 ED, Nikon 70-200/2.8 VR, Nikon 70-300/4.5-5.6 VR, and Tamron 70-200/2.8. Updated: now includes the Voigtlander 180/4 APO!

Nikon Ultra Wide Zooms

Comparing Nikon 16-35mm f/4 VR, 17-35mm f/2.8, 14-24mm f/2.8, 18-35mm, 24-70mm f/2.8 along with Nikon 20mm f/3.5, 24mm f/2, 28mm f/2, 35mm f/1.4 AIS, and more.

  1. Main Page
  2. Personal Usage Notes and Reactions
  3. Specifications and pricing
  4. Understanding Lens Performance
  5. Hazy Low Contrast with Nikon 17-35 @ f/2.8
  6. Correcting Distortion in Software
  7. Distortion at 16mm
  8. Distortion at 17mm
  9. Distortion at 21mm
  10. Distortion at 24mm
  11. Distortion at 28mm
  12. Distortion at 35mm
  13. Vignetting at 16mm
  14. Vignetting at 17mm
  15. Vignetting at 21mm
  16. Vignetting at 24mm
  17. Vignetting at 28mm
  18. Vignetting at 35mm
  19. Overview of Comparisons
  20. Crops at 16mm — Focus
  21. Crops at 16mm — Top Left Corner
  22. Crops at 16mm — Right Edge
  23. Crops at 16mm — Left Edge
  24. Crops at 16mm — Bottom
  25. Crops at 17mm — Focus
  26. Crops at 17mm — Left Edge
  27. Crops at 17mm — Top Left Corner
  28. Crops at 17mm — Right Edge
  29. Crops at 17mm — Bottom Right
  30. Crops at 21mm — Focus
  31. Crops at 21mm — Left Edge
  32. Crops at 21mm — Top Right Corner
  33. Crops at 21mm — Bottom
  34. Crops at 21mm — Bottom Right Corner
  35. Crops at 24mm — Focus
  36. Crops at 24mm — Left Edge
  37. Crops at 24mm — Right Edge
  38. Crops at 24mm — Upper Left Corner
  39. Crops at 24mm — Bottom Right
  40. Crops at 28mm — Focus
  41. Crops at 28mm — Left Edge
  42. Crops at 28mm — Right Edge
  43. Crops at 28mm — Top Left Corner
  44. Crops at 28mm — Bottom Right Corner
  45. Crops at 35mm — Focus
  46. Crops at 35mm — Left Edge
  47. Crops at 35mm — Right Edge
  48. Crops at 35mm — Top Left Corner
  49. Crops at 35mm — Bottom Right Corner
  50. Conclusions on Mosaic Comparisons —
  51. Download Full Resolution Mosaic @ f/5.6
  52. Overview of Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR
  53. Distortion of Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR
  54. Vignetting of Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR
  55. Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR— Crops at 18mm
  56. Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR— Crops at 21mm
  57. Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR— Crops at 24mm
  58. Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR— Crops at 28mm
  59. Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR— Crops at 35mm
  60. Nikon 18-35mm f/3.5-5.6 vs Nikon 16-35 f/4 VR— Conclusions
  61. Conclusions

Nikon 24mm Lens Choices

Options for a 24mm lens: Nikon 14-24/2.8G, Nikon 24-70/2.8G, Nikon 24/2 AI-S, Nikon PC-E 24/3.5. Sharpness, distortion, flare, field curvature, shooting impression and ergonomics.

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