# Canon Multiplicateur EF 2x III f/11 - f/4

**Brand:** Canon
**Category:** Photo
**Code (GTIN/SKU):** 4960999664835
**Canonical URL:** https://openreviews.io/en/reviews/canon/canon-multiplicateur-ef-2x-iii-f-11-f-4-4960999664835

## Rating: 4.0/5 ★★★★☆ — 10 reviews analyzed
_Confidence: high_

## At a glance

Canon Multiplicateur EF 2x III f/11 - f/4 reviews: 4.0/5 based on 10 analyzed reviews, updated September 8, 2026.

Praised: focal length doubling.

10 reviews analyzed, all published on other sites.
Other sites: 1 source, 10 reviews, average rating 4.0/5.
How we count reviews: https://openreviews.io/en/methodology

## AI summary

This teleconverter is designed to significantly extend the reach of the brand's compatible super-telephoto lenses. Users highlight its overall effectiveness for capturing very distant subjects without having to carry extra bulky lenses.

## Strengths

- **Focal length doubling** — It effectively doubles the focal length of compatible super-telephoto lenses.

## Frequently asked questions

- Which lenses are compatible with this teleconverter?
- How does it affect the lens's maximum aperture?
- Is the autofocus speed preserved?
- What is the impact on overall image quality?

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_Source: OpenReviews — https://openreviews.io/en/reviews/canon/canon-multiplicateur-ef-2x-iii-f-11-f-4-4960999664835_