---
product_id: 749632631
title: "Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless"
brand: "benoison"
price: "1393.22 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/749632631-telephoto-lens-for-canon-rf-lens-420-800mm-manual-focus
store_origin: TN
region: Tunisia
---

# 420-800mm super telephoto zoom Full manual focus precision Durable, high-quality build Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless

**Brand:** benoison
**Price:** 1393.22 DT
**Availability:** ✅ In Stock

## Summary

> 🔭 Capture the unreachable — own the moment others only dream of!

## Quick Answers

- **What is this?** Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless by benoison
- **How much does it cost?** 1393.22 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/749632631-telephoto-lens-for-canon-rf-lens-420-800mm-manual-focus)

## Best For

- benoison enthusiasts

## Why This Product

- Trusted benoison brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play RF Mount:** Upgraded RF mount fits Canon EOS R series mirrorless cameras directly—no adapter needed.
- • **Epic Reach, No Limits:** Massive 420-800mm focal length to capture distant wildlife and moon shots with stunning detail.
- • **Precision in Your Hands:** Full manual focus ring lets you control every shot with tactile accuracy—no autofocus distractions.
- • **Seamless Manual Shooting:** Enable 'Release shutter w/o Lens' and switch to Manual mode for effortless compatibility and control.
- • **Built to Last, Ready to Explore:** Robust construction ensures your lens withstands adventurous shoots season after season.

## Overview

The BENOISON 420-800mm RF telephoto lens is a rugged, full manual focus zoom lens designed exclusively for Canon EOS R series mirrorless cameras. With a fixed aperture range of f/8.3 to f/16 and a 62mm filter size, it offers extreme telephoto reach ideal for wildlife and moon photography. Its upgraded RF mount eliminates the need for adapters, while the durable build ensures long-lasting performance. Perfect for professionals and enthusiasts craving ultimate control and epic zoom capabilities.

## Description

Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless

## Features

- 【Super Telephoto Lens】Manual focus telephoto lens, NOT original-lens, a focal length of 420-800mm and an aperture of F/8.3-16 (non-adjustable aperture value, f8.3 at 420mm and f16 at 800mm), filter size of 62mm, full frame, RF mount, built with high-quality materials and robust construction, making them durable and long-lasting;
- 【RF Lens for Canon R Series Mirrorless Camera】420-800mm Manual Telephoto Lens Compatible for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless Camera (Not for Canon M series Mirrorless);
- 【Upgraded Version】Upgraded into an RF mount, which can be mounted on Canon mirrorless cameras without connecting the T adapter ring. For those who photograph wildlife or the moon as a hobby, this lens would be a great choice;
- 【User Instraction】This is a FULL MANUAL lens, NO Electronic Contacts, your camera will not allow to press the shutter after the lens is mounted, please set the "Release shutter w/o Lens" option in the camera menu to "Enable". Tips to use our Manual Lens: 1) Set the Release shutter w/o Lens option in the camera menu to Enable. 2) Set the mode dial to Manual (M);
- 【Manual Focus】The lens has a focus ring located near the front. Manually rotate this focus ring to adjust the focus. Turn the ring slowly until the subject you want to focus on appears sharp and clear. Also, with manual lenses, the aperture value is not displayed in the viewfinder (F00 is displayed).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | BENOISON |
| Manufacturer | BENOISON |
| Product Dimensions | 24 x 6.7 x 6.7 cm; 820 g |
| Item part number | 420-B-RF |
| Compatible Devices | for Canon RF mount mirrorless cameras |
| Mounting Hardware | Lens Cleaning Cloth, Telephoto Lens RF mount, User Manual |
| Number of items | 1 |
| Minimum diaphragm opening | 16 f |
| Min Focal Length | 420 Millimeters |
| Batteries Included | No |
| Batteries Required | No |
| Form Factor | for Canon Mirrorless Cameras |
| Lens type | Telephoto |
| Mounting Type | Canon RF |
| Actual viewing angle | 5 Degrees |
| Manufacturer | BENOISON |
| Country of Origin | China |
| Item Weight | 820 g |

## Product Details

- **Brand:** BENOISON
- **Focal Length Description:** 420-800mm
- **Lens Type:** Telephoto
- **Compatible Mountings:** Canon RF
- **Camera Lens Description:** Manual focus 420-800mm telephoto lens (RF mount)

## Images

![Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless - Image 1](https://m.media-amazon.com/images/I/61v5KfuXrzL.jpg)
![Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless - Image 2](https://m.media-amazon.com/images/I/71WUBIXT2cL.jpg)
![Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless - Image 3](https://m.media-amazon.com/images/I/71B+AzNnVDL.jpg)
![Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless - Image 4](https://m.media-amazon.com/images/I/71wp+rcyKAL.jpg)
![Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless - Image 5](https://m.media-amazon.com/images/I/71zDpPPONnL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Questions & Answers

**Q: Why can't I press the shutter after mounting the lens?**
A: Please do Enable the "Release shutter w/o lens", and then you can press the shutter to take a picture.

**Q: Why does my picture out of focus and very blurry?**
A: Since our lenses are manual lenses, there are no electronic contacts for autofocus. Need to turn the focus ring (on the front of the lens) for manual focusing. If it is still blurry, use a tripod and time-lapse function to keep the image stable.

**Q: Why is F00 displayed and how can the aperture value be set?**
A: As the manual lens has no electronic contacts to recognize the aperture value, “F00” is displayed. The aperture value can only be adjusted automatically by changing the focal length. (420mm/F8.3 →500mm/F10→600mm/F12→700mm/F14→800mm/F16)

**Q: What if the image turn out bright?**
A: If the image is too bright, lower the ISO (e.g. from 200 to 100) to reduce the light sensitivity and increase the shutter speed (e.g. from 1/125s to 1/250s) to reduce the exposure and avoid overexposure.

**Q: What if the image turn out dark?**
A: If the image is too dark, increase the ISO (e.g. from 800 to 1600) to increase the sensitivity and decrease the shutter speed (e.g. from 1/250s to 1/125s) to allow more light onto the sensor.

## Frequently Bought Together

- BENOISON Telephoto Lens for Canon - RF Lens 420-800mm Manual Focus MF Zoom Lens for Canon EOS R, Ra, RP, R3, R5, R5 C, R6, R6 Mark II, R7, R8, R10, R50, R100 Mirrorless
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-24*