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Articles and Calculators


Introduction to Non-Tracking DSLR Astrophotography (click)

70 mm to 600 mm Full Frame at 40 Feet.pdf (click)

Backyard Bird Photography (click)

Crop Sensor vs Full Frame Sensor Cameras and Lenses (click)

Lens Simulations (click)

Depth of Field Examples (click)

Sony FE 90 mm Macro Lens Resolution Tests.pdf (click)

Nikon D810 vs Nikon D810a with Photoshop Processing (click)

Comparison of Optics for Imaging the 2017 Solar Eclipse (click)

Tokina 17-35 mm F4 FX AF for Nikon Test Shots (45 mb) (click)

Night Vision - The Red Myth (click)

Binoculars (click)

Travel Case for Celestron C6 Telescope (click)

Lens Exposure Time Calculator

Field of View Calculator

Nikon Lens Simulator