The Opteka 500mm / 1000mm f/8 manual focus preset lens is a classic refractor-style T-mount lens, with an aperture diaphragm in the middle of the lens body to stop down the aperture when necessary. However, it is assumed that much of the shooting with such a lens will be at its maximum f/8.0 aperture, with a tripod, monopod, or other such support. <br><br>

<b>Specifications</b><br>
Aperture Range: f/8 - 32<br>
Format Compatibility: Full-Frame / APS-C<br>
Angle of View: 5°<br>
Minimum Focus Distance: 33-Feet (10m)<br>
Optical Design: 4 Elements in 4 Groups<br>
Focus Type: Manual<br>
Filter Size: 67mm<br>
Dimensions: 2.75 x 11.75 in.<br>
Weight: 1.4 lbs<br><br>

<b>Features</b><br>
Glass multicoated optics<br>
All-metal body<br>
Knurled focus ring to the front of the lens<br>
Accepts 67mm filters on the front of the lens<br>
Built-in rotating tripod collar<br>
For use with monopods, chest supports, or tripods<br><br>

<b>Includes</b><br>
Opteka 500mm Super Telephoto Preset Lens<br>
Opteka Lens Pouch<br>
Opteka Front Cap<br>
Opteka Rear Cap<br>
Opteka 5-Year Warranty<br>