Home Lenses Canon RF 20-50mm F4L IS USM PZ Canon · RF
Released June 2026
A full-frame RF constant-f/4 zoom with internal power and manual zoom operation, optical stabilisation and Nano USM autofocus.
Compare with another lens Compare with… RF 14mm F1.4L VCM (2026) RF 7-14mm F2.8-3.5L FISHEYE STM (2026) RF 45mm F1.2 STM (2025) RF 85mm F1.4L VCM (2025) RF 75–300mm F4–5.6 (2025) RF 20mm F1.4 L VCM (2025) RF-S 14–30mm F4–6.3 IS STM PZ (2025) RF 16–28mm F2.8 IS STM (2025) RF 24mm F1.4 L VCM (2024) RF 50mm F1.4 L VCM (2024) RF 70-200mm F2.8L IS USM Z (2024) RF 28–70mm F2.8 IS STM (2024) RF 35mm F1.4 L VCM (2024) RF 200–800mm F6.3–9 IS USM (2023) RF 24-105mm F2.8 L IS USM Z (2023) RF-S 10–18mm F4.5–6.3 IS STM (2023) RF 10–20mm F4 L IS STM (2023) RF 28mm F2.8 STM (2023) RF 100–300mm F2.8L IS USM (2023) RF 24–50mm F4.5–6.3 IS STM (2023) RF-S 55–210mm F5–7.1 IS STM (2023) RF 135mm F1.8 L IS USM (2023) RF 15–30mm F4.5–6.3 IS STM (2022) RF 24mm F1.8 MACRO IS STM (2022) RF-S 18–150mm F3.5–6.3 IS STM (2022) RF-S 18–45mm F4.5–6.3 IS STM (2022) RF 1200mm F8L IS USM (2022) RF 800mm F5.6L IS USM (2022) RF 100–400mm F5.6–8 IS USM (2021) RF 16mm F2.8 STM (2021) RF 14–35mm F4 L IS USM (2021) RF 100mm F2.8 L Macro IS USM (2021) RF 400mm F2.8L IS USM (2021) RF 600mm F4L IS USM (2021) RF 70–200mm F4 L IS USM (2021) RF 50mm F1.8 STM (2020) RF 85mm F2 MACRO IS STM (2020) RF 100–500mm F4.5–7.1L IS USM (2020) RF 600mm F11 IS STM (2020) RF 800mm F11 IS STM (2020) RF 24–105mm F4–7.1 IS STM (2020) RF 85mm F1.2 L USM DS (2019) RF 70–200mm F2.8 L IS USM (2019) RF 15–35mm F2.8 L IS USM (2019) RF 24–240mm F4–6.3 IS USM (2019) RF 24–70mm F2.8L IS USM (2019) RF 85mm F1.2 L USM (2019) RF 28–70mm F2 L USM (2018) RF 35mm F1.8 MACRO IS STM (2018) RF 24–105mm F4L IS USM (2018) RF 50mm F1.2 L USM (2018) EF 70–200mm f/2.8L IS III USM (2018) EF 70–200mm f/4L IS II USM (2018) EF 85mm f/1.4L IS USM (2017) EF-S 35mm f/2.8 Macro IS STM (2017) EF-S 18–55mm f/4–5.6 IS STM (2017) EF 16–35mm f/2.8L III USM (2016) EF-S 18–135mm f/3.5–5.6 IS USM (2016) EF 24–105mm f/4L IS II USM (2016) EF 35mm f/1.4L II USM (2015) EF 50mm f/1.8 STM (2015) EF 24–105mm f/3.5–5.6 IS STM (2014) EF-S 24mm f/2.8 STM (2014) EF-S 10–18mm f/4.5–5.6 IS STM (2014) EF-S 55–250mm f/4–5.6 IS STM (2013) EF-S 18–55mm f/3.5–5.6 IS STM (2013) EF 24–70mm f/4L IS USM (2012) EF 35mm f/2 IS USM (2012) EF 24–70mm f/2.8L II USM (2012) EF 24mm f/2.8 IS USM (2012) EF 28mm f/2.8 IS USM (2012) EF-S 18–135mm f/3.5–5.6 IS STM (2012) EF-S 55–250mm f/4–5.6 IS II (2011) EF-S 18–55mm f/3.5–5.6 III (2011) EF-S 18–55mm f/3.5–5.6 IS II (2011) EF 70–200mm f/2.8L IS II USM (2010) EF 100mm f/2.8L Macro IS USM (2009) EF-S 15–85mm f/3.5–5.6 IS USM (2009) EF-S 18–135mm f/3.5–5.6 IS (2009) EF 24mm f/1.4L II USM (2008) EF-S 18–200mm f/3.5–5.6 IS (2008) EF-S 55–250mm f/4–5.6 IS (2007) EF-S 18–55mm f/3.5–5.6 IS (2007) EF 50mm f/1.2L USM (2007) EF 16–35mm f/2.8L II USM (2007) EF 70–200mm f/4L IS USM (2006) EF-S 17–55mm f/2.8 IS USM (2006) EF 85mm f/1.2L II USM (2006) EF-S 18–55mm f/3.5–5.6 II (2005) EF-S 18–55mm f/3.5–5.6 II USM (2005) EF-S 60mm f/2.8 Macro USM (2005) EF 24–105mm f/4L IS USM (2005) EF-S 10–22mm f/3.5–4.5 USM (2004) EF-S 17–85mm f/4–5.6 IS USM (2004) EF-S 18–55mm f/3.5–5.6 USM (2003) EF 24–70mm f/2.8L USM (2002) EF 16–35mm f/2.8L USM (2001) EF 70–200mm f/2.8L IS USM (2001) EF 100mm f/2.8 Macro USM (2000) EF 70–200mm f/4L USM (1999) EF 35mm f/1.4L USM (1998) EF 24mm f/1.4L USM (1997) EF 135mm f/2L USM (1996) EF 200mm f/2.8L II USM (1996) EF 28mm f/1.8 USM (1995) EF 70–200mm f/2.8L USM (1995) EF 50mm f/1.4 USM (1993) EF 85mm f/1.8 USM (1992) EF 200mm f/2.8L USM (1991) EF 50mm f/1.8 II (1990) EF 35mm f/2 (1990) EF 100mm f/2.8 Macro (1990) EF 80–200mm f/2.8L (1989) EF 85mm f/1.2L USM (1989) EF 24mm f/2.8 (1988) EF 28mm f/2.8 (1987) EF 50mm f/1.8 (1987) NIKKOR Z 70–200mm f/2.8 VR S II (2026) NIKKOR Z 24–105mm f/4–7.1 (2026) NIKKOR Z DX 16–50mm f/2.8 VR (2025) NIKKOR Z DX MC 35mm f/1.7 (2025) NIKKOR Z 24-70mm f/2.8 S II (2025) NIKKOR Z 28-135mm f/4 PZ (2025) NIKKOR Z 35mm f/1.2 S (2025) NIKKOR Z 50mm f/1.4 (2024) NIKKOR Z 35mm f/1.4 (2024) NIKKOR Z 28-400mm f/4-8 VR (2024) NIKKOR Z 135mm f/1.8 S Plena (2023) NIKKOR Z 600mm f/6.3 VR S (2023) NIKKOR Z 180-600mm f/5.6-6.3 VR (2023) NIKKOR Z 70-180mm f/2.8 (2023) NIKKOR Z DX 24mm f/1.7 (2023) NIKKOR Z DX 12-28mm f/3.5-5.6 PZ VR (2023) NIKKOR Z 26mm f/2.8 (2023) NIKKOR Z 85mm f/1.2 S (2023) NIKKOR Z 600mm f/4 TC VR S (2022) NIKKOR Z 17-28mm f/2.8 (2022) NIKKOR Z 400mm f/4.5 VR S (2022) NIKKOR Z 800mm f/6.3 VR S (2022) NIKKOR Z 400mm f/2.8 TC VR S (2022) NIKKOR Z 28-75mm f/2.8 (2022) NIKKOR Z 100-400mm f/4.5-5.6 VR S (2021) NIKKOR Z 24-120mm f/4 S (2021) NIKKOR Z DX 18-140mm f/3.5-6.3 VR (2021) NIKKOR Z 40mm f/2 (2021) NIKKOR Z 28mm f/2.8 (2021) NIKKOR Z MC 105mm f/2.8 VR S (2021) NIKKOR Z MC 50mm f/2.8 (2021) NIKKOR Z 50mm f/1.2 S (2020) NIKKOR Z 14-24mm f/2.8 S (2020) NIKKOR Z 24-50mm f/4-6.3 (2020) NIKKOR Z 70-200mm f/2.8 VR S (2020) NIKKOR Z 24-200mm f/4-6.3 VR (2020) NIKKOR Z 20mm f/1.8 S (2020) NIKKOR Z DX 16-50mm f/3.5-6.3 VR (2019) NIKKOR Z DX 50-250mm f/4.5-6.3 VR (2019) NIKKOR Z 58mm f/0.95 S Noct (2019) NIKKOR Z 24mm f/1.8 S (2019) NIKKOR Z 85mm f/1.8 S (2019) NIKKOR Z 24-70mm f/2.8 S (2019) NIKKOR Z 14-30mm f/4 S (2019) NIKKOR Z 50mm f/1.8 S (2018) NIKKOR Z 24-70mm f/4 S (2018) NIKKOR Z 35mm f/1.8 S (2018) AF-S NIKKOR 500mm f/5.6E PF ED VR (2018) AF-S NIKKOR 180-400mm f/4E TC1.4 FL ED VR (2018) AF-S NIKKOR 28mm f/1.4E ED (2017) AF-S NIKKOR 70–200mm f/2.8E FL ED VR (2016) AF-S NIKKOR 105mm f/1.4E ED (2016) AF-S NIKKOR 24-70mm f/2.8E ED VR (2015) AF-S NIKKOR 200–500mm f/5.6E ED VR (2015) AF-S NIKKOR 24mm f/1.8G ED (2015) AF-S NIKKOR 500mm f/4E FL ED VR (2015) AF-S NIKKOR 600mm f/4E FL ED VR (2015) AF-S NIKKOR 20mm f/1.8G ED (2014) AF-S NIKKOR 400mm f/2.8E FL ED VR (2014) AF-S DX NIKKOR 18–300mm f/3.5–6.3G ED VR (2014) AF-S NIKKOR 35mm f/1.8G ED (2014) AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR (2013) AF-S NIKKOR 800mm f/5.6E FL ED VR (2013) AF-S NIKKOR 28mm f/1.8G (2012) AF-S NIKKOR 85mm f/1.8G (2012) AF-S DX Micro NIKKOR 40mm f/2.8G (2011) AF-S NIKKOR 50mm f/1.8G (2011) AF-S NIKKOR 35mm f/1.4G (2010) AF-S NIKKOR 24–120mm f/4G ED VR (2010) AF-S NIKKOR 85mm f/1.4G (2010) AF-S NIKKOR 24mm f/1.4G ED (2010) AF-S NIKKOR 16–35mm f/4G ED VR (2010) AF-S DX NIKKOR 35mm f/1.8G (2009) AF-S NIKKOR 50mm f/1.4G (2008) AF-S NIKKOR 14–24mm f/2.8G ED (2007) FE 400mm F4.5 GM OSS (2026) FE 600mm F6.3 GM OSS (2026) FE 8–14mm F3.5 Fisheye G (2026) FE 100–400mm F5.6–8 OSS (2026) FE 100–400mm F4.5 GM OSS (2026) FE 28-70mm F3.5-5.6 OSS II (2026) FE 100mm F2.8 Macro GM OSS (2025) FE 50–150mm F2 GM (2025) FE 16mm F1.8 G (2025) FE 400–800mm F6.3–8 G OSS (2025) FE 28–70mm F2 GM (2024) FE 85mm F1.4 GM II (2024) E PZ 16-50mm F3.5-5.6 OSS II (2024) FE 16-25mm F2.8 G (2024) FE 24-50mm F2.8 G (2024) FE 300mm F2.8 GM OSS (2024) FE 16–35mm F2.8 GM II (2023) FE 70-200mm F4 Macro G OSS II (2023) FE 50mm F1.4 GM (2023) FE 20-70mm F4 G (2023) E 11mm F1.8 (2022) E 15mm F1.4 G (2022) E PZ 10-20mm F4 G (2022) FE 24–70mm F2.8 GM II (2022) FE PZ 16-35mm F4 G (2022) FE 70–200mm F2.8 GM OSS II (2021) FE 14mm F1.8 GM (2021) FE 24mm F2.8 G (2021) FE 40mm F2.5 G (2021) FE 50mm F1.2 GM (2021) FE 50mm F2.5 G (2021) FE 35mm F1.4 GM (2021) FE 28-60mm F4-5.6 (2020) FE 12-24mm F2.8 GM (2020) FE 20mm F1.8 G (2020) E 70-350mm F4.5-6.3 G OSS (2019) E 16-55mm F2.8 G (2019) FE 35mm F1.8 (2019) FE 200-600mm F5.6-6.3 G OSS (2019) FE 600mm F4 GM OSS (2019) FE 135mm F1.8 GM (2019) FE 24mm F1.4 GM (2018) FE 400mm F2.8 GM OSS (2018) E 18-135mm F3.5-5.6 OSS (2018) FE 24-105mm F4 G OSS (2017) FE 100-400mm F4.5-5.6 GM OSS (2017) FE 12-24mm F4 G (2017) FE 16-35mm F2.8 GM (2017) FE 100mm F2.8 STF GM OSS (2017) FE 85mm F1.8 (2017) E PZ 18-110mm F4 G OSS (2016) FE 50mm F2.8 Macro (2016) FE 70-200mm F2.8 GM OSS (2016) Planar T* FE 50mm F1.4 ZA (2016) FE 50mm F1.8 (2016) FE 70-300mm F4.5-5.6 G OSS (2016) FE 24-70mm F2.8 GM (2016) FE 85mm F1.4 GM (2016) FE 90mm F2.8 Macro G OSS (2015) Distagon T* FE 35mm F1.4 ZA (2015) FE 24-240mm F3.5-6.3 OSS (2015) FE 28mm F2 (2015) FE PZ 28-135mm F4 G OSS (2014) Vario-Tessar T* FE 16-35mm F4 ZA OSS (2014) FE 70-200mm F4 G OSS (2014) Vario-Tessar T* FE 24-70mm F4 ZA OSS (2014) E PZ 18-105mm F4 G OSS (2013) Sonnar T* FE 55mm F1.8 ZA (2013) 70-200mm F2.8 G SSM II (2013) Sonnar T* FE 35mm F2.8 ZA (2013) Vario-Tessar T* E 16-70mm F4 ZA OSS (2013) Planar T* 50mm F1.4 ZA SSM (2013) E 20mm F2.8 (2013) E 10-18mm F4 OSS (2012) E 35mm F1.8 OSS (2012) E PZ 18-200mm F3.5-6.3 OSS (2012) E 18-200mm F3.5-6.3 OSS LE (2012) E 50mm F1.8 OSS (2011) Sonnar T* E 24mm F1.8 ZA (2011) DT 16–50mm F2.8 SSM (2011) E 55-210mm F4.5-6.3 OSS (2011) E 30mm F3.5 Macro (2011) DT 35mm F1.8 SAM (2010) E 16mm F2.8 (2010) DT 30mm F2.8 Macro SAM (2009) DT 50mm F1.8 SAM (2009) Vario-Sonnar T* 16-35mm F2.8 ZA SSM (2009) Vario-Sonnar T* 24–70mm F2.8 ZA SSM (2008) Vario-Sonnar T* DT 16–80mm F3.5–4.5 ZA (2007) Planar T* 85mm F1.4 ZA (2006) Sonnar T* 135mm F1.8 ZA (2006) 70–200mm F2.8 G (2006) 50mm F1.4 (2006) 50mm F2.8 Macro (2006)
Mount Canon RF
Focal length 20–50 mm
Max aperture f/4
Stabilisation Yes
Weight 420 g What reviewers say Reviewers praise sharp central detail, quiet focusing, smooth power zoom and light handling. Digital Camera World flags heavy native wide-angle distortion and regards photography as secondary to video. ePHOTOzine is more enthusiastic about general stills use and reports almost distortion-free results in its test, while noting occasional flare and slightly textured bokeh.
From digitalcameraworld.com and ephotozine.com
Optics
Lens type Zoom
Focal length 20–50 mm
Maximum aperture f/4
Minimum aperture f/22
Optical construction 13 elements in 11 groups
Special elements Two glass-moulded aspherical and three UD elements
Coatings ASC and Super Spectra; fluorine coating on the front element
Aperture detail Constant maximum f/4, minimum f/22 throughout the range
Diaphragm Nine aperture blades
Angle of view Horizontal 84°–40°, vertical 62°–27° and diagonal 94°–46° on full frame Mount and compatibility
Mounts Canon RF
Image circle Full frame
Compatibility Canon EOS R cameras; full-frame image circle; power-zoom control from camera body or remote devices depends on compatible model and firmware
Teleconverter support Canon RF extenders not compatible Focus and stabilisation
Autofocus Yes
Minimum focus distance 0.24 m
Maximum magnification 0.33×
Optical stabilisation Yes
Autofocus detail Nano USM autofocus; full-time manual focus; maker rear-focus design retains length during focusing
Magnification detail Maker maximum magnification 0.14× at 20 mm or 0.33× at 50 mm; no AF/MF mode specified in the table
Stabilisation detail Maker six-stop optical IS or combined camera/lens eight stops at centre and corners under CIPA-2024, at maximum focal length with its specified camera; not guaranteed in every shooting setup
Video features Internal multi-speed power zoom and optically suppressed focus breathing; zoom ring switches between powered and conventional manual operation Design
Dust and moisture resistant Yes
Filter diameter 67 mm
Maximum diameter 79.9 mm
Length 98.4 mm
Weight 420 g
Controls Customisable control ring, focus ring and zoom ring; PZ/MZ selector, custom button, AF/MF and stabiliser switches (Digital Camera World; ePHOTOzine)
Zoom design Internal zoom/focus keeps barrel length fixed; ePHOTOzine describes conventional mechanical manual zoom, while Digital Camera World's prose calls it fly-by-wire; no silent choice between those reviewer descriptions
Filter detail 67 mm front screw-in filter thread
Weather resistance Dust and moisture resistant with mount gasket; maker warns camera attachment is required and protection cannot prevent all dust or water ingress; no waterproof/IP rating inferred
Dimensions detail Approximately 79.9 mm maximum diameter × 98.4 mm length
Weight detail Approximately 420 g lens
Lens hood ES-73B; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessories
Release detail Canon Japan's 11 June 2026 notice confirms first sale from 26 June 2026, resolving the earlier late-June launch wording Pros and cons Pros + Integrated power zoom with manual operation+ Constant f/4 aperture and optical stabilisation+ Dust and moisture resistant constructionCons − 50 mm maximum focal length− Not compatible with RF extenders− Camera zoom controls depend on body compatibility
