420-800mm f/8.3 Lens

bythom opteka 420-800mm

A simple telephoto push/pull zoom lens.

  • Coverage: full frame (FX)
  • Field of view: 
  • Optic design:
    • 4 elements in 2 groups
    • semi-apochromatic design
  • Aperture:
    • f/8.3 (420mm; declines to f/16 at 800mm)
    • no aperture diaphragm
  • Accessories:
    • 62mm filter ring
    • slight built-in lens hood
    • included lens pouch
    • built-in rotating tripod mount
  • Focus:
    • manual focus only
    • 5 ft 3" (1.6m) minimum focus
    • 1:? maximum magnification ratio
  • Size and weight:
    • 8.75” (mm) long
    • 2.7” (69mm) diameter
    • 18.3 ounces (520g) weight
  • Price: US$109
  • Announced: ?
  • Note: This is a variation of the T-mount lens. It generally comes with a mount adapter you screw into the lens. From some vendors, you also get a 2x converter.
  • Available from AmazonAs an Amazon Associate I earn from qualifying purchases.
Looking for other photographic information? Check out our other Web sites:
DSLRS: dslrbodies.com | mirrorless: sansmirror.com | general/technique: bythom.com | film SLR: filmbodies.com

text and images © 2021 Thom Hogan — All Rights Reserved
Follow us on Twitter: @bythom, hashtags #bythom, #zsystemuser