johnnyoptic - Home Page
Tilt Lenses (For Sale)
DIY Optics (Tutorials)
Homemade Lens Primer
What's all the Fuzz About?
Measuring Focal Length, Aperture and F-stop
The Monocle
Homemade Telephoto Lenses
Replicating the Rodenstock Imagon
Homemade lenses and Digital Infrared Photography
Image Gallery
Who is johnnyoptic?
Test Results
This image was shot with disk #1 (circular aperture approx f/ 5.6).
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