# Canon Multiplicateur RF 2x F/11 - F/4

**Brand:** Canon
**Category:** Photo
**Code (GTIN/SKU):** 4549292168051
**Canonical URL:** https://openreviews.io/en/reviews/canon/canon-multiplicateur-rf-2x-f-11-f-4-4549292168051

## Rating: 3.3/5 ★★★☆☆ — 3 reviews analyzed
_Confidence: high_

## At a glance

Canon Multiplicateur RF 2x F/11 - F/4 reviews: 3.3/5 based on 3 analyzed reviews, updated September 8, 2026.

Criticized: overall performance and brightness.

3 reviews analyzed, all published on other sites.
Other sites: 1 source, 3 reviews, average rating 3.3/5.
How we count reviews: https://openreviews.io/en/methodology

## AI summary

This focal length multiplier is intended for photographers using Canon's RF mount who wish to double their focal length. Reviews about it are particularly mixed regarding the overall performance delivered in the field. Users express significant reservations about the resulting image quality and the loss of light, which may limit its use to bright light conditions.

## Weaknesses

- **Overall performance** — Sharpness and overall image quality suffer a noticeable drop according to user feedback.
- **Brightness** — Using this teleconverter results in a significant loss of light, limiting autofocus and low-light usability.

## Frequently asked questions

- Is the loss of sharpness acceptable?
- Which RF lenses are compatible?
- Does autofocus remain effective at f/11?
- Can the teleconverter be used without a tripod?

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_Source: OpenReviews — https://openreviews.io/en/reviews/canon/canon-multiplicateur-rf-2x-f-11-f-4-4549292168051_