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In Teleconverter Design for Telephoto Lenses
Canon Rumors • • technology
Key Points:
- Canon has patented a lens design featuring a drop-in teleconverter slot, allowing an extender to be added without increasing the overall lens length, similar to a built-in teleconverter.
- The patent highlights the importance of teleconverter placement within the lens, with Canon positioning it toward the rear to take advantage of the narrowing light path, enabling smaller teleconverter glass.
- The design uses a 100-300mm f/2.8 base lens with an empty space for a 1.4x teleconverter, maintaining the total lens length at 370mm whether the extender is inserted or not.
- This approach could offer a cost-effective alternative for users who want longer reach without changing the lens size or weight, potentially allowing Canon to sell teleconverters separately at premium prices.
- While innovative, it remains uncertain if photographers will prefer a drop-in teleconverter over built-in models, but the patent indicates Canon's ongoing research into new teleconverter implementations.
