In my opinion this is the best extender on the market right now. The optics are great, it's built like a tank and it has an ENG-lens style back-focus adjustment that is so quick and easy to use and is a lot easier than dealing with shims. It's pictured with my Cooke 25-250mm zoom. This combo gives you a 50-500mm zoom that is very light-weight.
IN DUCLOS' WORDS:
A brand new array of optics designed from the ground up, the Duclos 2X Tele-Extender effectively doubles the focal length of the taking lens, providing a narrower field of view while maintaining the highest level of quality. The Duclos 2X Extender features an integrated back focus adjustment for quick, easy field adjustments. No need for shimming. Designed and manufactured with high grade, anodized aluminum body and stainless steel PL mounts, the Duclos 2X Extender excels at maintaining resolution throughout the field for Super 35 format lenses.
Magnification: 2x taking lens
Max Aperture: -2 stops
Coverage: Super 35, APS-C
Lens Mount: PL
Weight: About 1 lb.
Your card will be charged when the owner accepts your request. Cancel within 2 hours of acceptance and you will receive a full refund. Cancel within 48 hours of the rental start date and you will receive a 50% refund. Cancel within 24 hours of the rental start date and the rental may be non-refundable. Cancellation fees are imposed at owner's discretion.