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Canon RF 50mm f/1.8 STM : Specifications and Opinions

The Canon RF 50mm f/1.8 STM is a standard lens for FF and APS-C, manufactured from 2020. The focus is done by Stepper Motor, it does not have image stabilization. The average price is 209 €;

58 users have given it an average vote of 9.2 out of 10.

MOUNT

This lens is available with the following mounts:

Canon RF: this lens is compatible with mirrorless fullframe and APS-C Canon RF.

Specifications

Reviews (18)

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Specifications
Focal lenght	50 mm
Angle of view	46.7°
Format	FF, APS-C
Max. aperture	1.8
Aperture blades	7
Lenses/Groups	6 elements in 5 groups
Min. focus distance	0.30 metri
Reproduction ratio	0.25x
Features
Zoom type	-
Autofocus	Stepper Motor
Internal Focus	Yes
Stabilization	No
Built and notes
Tripod ring	No
Extenders	No
Filters	43
Lens hood	Yes (not supplied)
Weather sealing	No
Weight	160 g
Dimensions	69 x 41 mm
Production	2020
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Reviews

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The following opinions have been automatically translated with Microsoft Translate.

Daniele Chierichetti

sent on 29 Maggio 2025

Pros: Cheap, better than the EF version, compact, light, sharp (but not as sharp as the other RF 50mm)

Cons: STM motor not very fast and noisy, extra lens hood

Opinion: Definitely a lens to buy in your kit if you want a native 50mm RF that does its job with little expense. Obviously this lens is superior to the EF 50mm STM version in practically everything and the fact that you can mount it natively on R bodies without an adapter is great! The lens is cheap (the lens hood is always missing, but it is solved with the third-party one that works very well) and is sharp, even if when you compare it to the other two RF 50mm 1.4 and 1.2 the difference is really visible (with open apertures, closing it is really sharp). it is something to take if you use fixed lenses little and want to mount it every now and then for some photos (perhaps portraits or something more artistic) Definitely a lens that I would still recommend! if you then use it on recent bodies with IBIS it also gains stabilization that is not normally there

Roy72chi

sent on 29 Maggio 2024

Pros: Lightweight and always sharp.

Cons: For the price I don't know, maybe I would have preferred a 9-blade diaphragm.

Opinion: I have had and used the EF STM version on the 70D, 6DII and the current R with the adapter and it was simply unique in value for money. I find this RF much sharper at maximum aperture and well contrasted. Considering that it costs twice as much as the EF analogue, I would have preferred a 9-blade diaphragm for a softer blur, but all in all I'm quite happy with it. I definitely recommend it to all amateur photographers who are not too demanding. Those who love this focal length and have the economic possibility, can definitely opt for the more expensive and heavier f/1.2 L version. For me it deserves a 9.

Sirovai

sent on 27 Gennaio 2024

Pros: Cost, size, AF

Cons: Sharpness

Opinion: For the price it's fine. You have to be aware that when wide open it is very soft. To get some sharpness you have to close down to f2.8 (for the center). Unfortunately for the edges you have to close to f5.6. I also noticed that if you close the aperture more, already at f8 there is a lot of diffraction. Taken used at 160€ it can fit. The 35mm optically is something else.

Farso85

sent on 4 Gennaio 2024

Pros: Low weight, small size, low cost, decent Af

Cons: Poor sharpness, low price but worth the cost, not enough micro contrast

Opinion: Unlike all the other RF lenses I've tried, it's not optimized for full-aperture use (not even in the center) and you need to close down to f2.8 for acceptable sharpness in the center and f5.6 for corners. It reminds me of the sharpness of the 50mm ef 1.4 but worse. It also suffers from backlighting. On the other hand, the very small weight and the space occupied in the bag, practically zero. Nice manual focus ring that can be customized like other RF lenses.

Giallo63

sent on 28 Giugno 2023

Pros: Price - weight - overall size - overall quality

Cons: No hood - single ring for af/diaphragms - yield at the edges up to f:4

Opinion: I also own the RF L-series f:1,2 parifocal. Needless to make comparisons, otherwise one of the two should not exist: if the 50/1.2 were not perfect, it should not cost what it costs; If 50/1.8 were perfect, it couldn't cost what it costs. But precisely: despite sharing the focal length and despite having only one stop of difference brightness, they are two profoundly different lenses in light of the use that can be made of them: I would never go on the Dolomite trails with the 50/1.2, to say, nor, being able to choose between the two, I would use the 50/1.8 for a ceremony or a portrait session. The little guy actually does well, as long as you take into account that the major openings are "emergency" and do not pretend to adequately enhance all the quality offered by the sensor of an R5. Probably on other less resolving cameras the speech improves more and more. It is light and fits in your pocket, it goes very well with the 24/1.8 and probably even more with the announced 28/2.8 pancakes. It must be borne in mind (at least I am forced to do so) that a small and light lens is always preferable to a massive and corpulent one in all cases in which long stretches are traveled on foot, even more if uphill, even more if under the scorching sun. It's obvious, but I still remember the insane idea of taking 28-70/2 with me on the paths of the Alpe di Siusi. Of course, returning home, in front of the mac, I appreciated its stellar quality: but they were all shots from f: 5.6 to f: 11, that is, in conditions in which even the small and cheap 50/1.8 would have given convincing results, weighing a tenth of the fabulous superbright zoom I had with me. In short, when I know a priori that I will shoot a lot of architecture or landscape, I take the 15-35 / 2.8 L. But if I go out light without knowing what I will focus the camera on, I always add to the basic kit (eg 24-105) the very small and reviled 16 / 2.8, which is not at the level of the other, but still offers a very dignified yield and an angle of field otherwise the prerogative of much more expensive and huge "monsters". The back and shoulders thank you. The same goes for 50/1.8, based on the principle that the best lens in the world is the one you have when you shoot. If you stayed at home because it was too heavy, don't shoot. And it is always better to take home a (good) photo taken with a non-perfect lens than not to shoot at all having left a perfect lens at home.

There are 13 more reviews. Show all »

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