Open Vlog New World Canon RF-S Ultra Wide Angle Lens Evaluation

In November 2023, Canon released RF-S10-18mm F4.5-6.3 IS STM lens. The focal section of this lens covers from 10mm ultra wide angle to 18mm wide angle (equivalent focal length 16-28.8mm), which is suitable for daily shooting of various subjects, whether it is travel scenery or video Vlog shooting. The lens is light and portable, and there is no burden for daily carrying and shooting. In addition, the release of this lens has further enriched Canon's RF-S lens product line and provided cost-effective wide-angle lens selection for Canon APS-C frame users. Today we will introduce this lens to you in detail.

RF-S10-18mm F4.5-6.3 IS STM Specification Parameters

Lens focal length: 10-18mm (equivalent focal length 16-28.8mm)

Lens structure: 10 groups of 12 pieces

Aperture blade: 7 pieces

Minimum aperture: F22-32

The nearest focusing distance: auto focusing: about 0.14m, manual focusing: about 0.086m (10mm)

Maximum magnification: auto focus: about 0.23 times (18mm), manual focus: about 0.5 times (10mm)

drive System: STM stepping motor

Jitter compensation effect: about 4 levels (based on CIPA test standard, focal length 18mm, when EOS R10 is used, pitch axis and swing axis directions)

Filter diameter: 49mm

Maximum diameter and length: about Φ 69 × 44.9mm

Weight: about 150g

Introduction to lens appearance

The size of this lens is about Φ 69 × 44.9mm, and its weight is only about 150g. The wide viewing angle and lightweight volume can not only be used for scenery, travel, street photography and other topics, but also be more suitable for creating Vlog videos or live shooting and other applications. Canon microenterprise installed on APS-C frames such as EOS R7/R10/R50 camera On the other hand, photos and video images taken from a wide angle with an equivalent focal length of 16mm can bring strong visual impact.

Canon RF-S10-18mm F4.5-6.3 ISSTM is very convenient for live broadcast or VLOG creation

Canon RF-S10-18mm F4.5-6.3 IS STM Vlog video angle display in different focal sections

Canon RF-S10-18mm F4.5-6.3 IS STM self shot video display in different focal sections

Canon RF-S10-18mm F4.5-6.3 IS STM perspective comparison

In terms of optical structure, Canon RF-S10-18mm F4.5-6.3 IS STM lens adopts 10 groups of 12 optical structures, including 1 aspheric lens and 2 UD low dispersion lenses. When the lens is manually focused at 10mm focal length, the nearest focusing distance is 0.086m (8.6cm), so it also has a certain close-up ability.

This lens has certain macro photography performance

RF-S10-18mm F4.5-6.3 IS STM lens adopts telescopic zoom structure, and continues the design style of Canon RF-S lens. The black body is attached with silver decorative ring at the rear. The overall impression is small and delicate, which is similar to the familiar 50mm F1.8 lens.

Lens adopts telescopic zoom structure

The front end of the lens is a focusing/multi-function control ring, which is moderately damped and comfortable when rotating. The knurling process of the surface brings better controllability, and it can be easily operated even with gloves. The multi-function control ring allows users to customize it, which can distribute shutter speed, sensitivity adjustment and other functions, bringing more convenient operation. This is also one of the features of Canon RF series lenses.

Multi function control ring is the characteristic function of Canon RF/RF-S series lens

The focusing/multi-function control ring is followed by the zoom ring. The tightly arranged stripes and moderate damping also bring a good feel to the zoom operation, which is convenient for users to fine operate.

Front lens set

12 contacts facilitate data communication between lens and body

This lens uses a 49mm filter aperture, the front lens group has a beautiful yellow green coating, and the lens uses a 7-blade circular aperture. The lens bayonet is equipped with 12 metal contacts, which brings data communication between the lens and the body.

Lens resolution test

Next, let's take a look at the resolution of this lens. With RF-S10-18mm F4.5-6.3IS STM lens Canon EOS R7 This special micro camera is equipped with an APS-C frame image sensor with 32.5 million effective pixels.

During the test, the aperture priority mode is used, the sensitivity is set to ISO 100, and the RAW+JPEG format is used for recording. The aperture changes step by step. Finally, 100% zoom in and capture the image center and edge for comparison, and test the 10mm end and 18mm end respectively.

When the aperture of the 10mm end of the lens is fully open, the resolution performance of the center and edge is excellent, and the resolution performance is very stable up to the F11 aperture. The resolution of F16 began to decline, especially in the marginal areas.

The resolution performance of the lens at the 18mm end is similar to that at the 10mm end. From full aperture to F11, the resolution performance of the center and edge of the image is excellent, and it has declined from F16 aperture.

Lens ghost glare suppression test

As a super wide-angle lens, it is inevitable to encounter backlighting when shooting, and the anti glare ability of the lens becomes particularly important at this time. Anti glare mainly depends on lens coating technology. RF-S10-18mm F4.5-6.3 IS STM lens has a good performance in ghost glare suppression, and there is no obvious ghost and glare at either the 10mm end or the 18mm end.

Screenshot of ghost glare test at 10mm end

Screenshot of ghost glare test at 18mm end

Lens anti dispersion test

When shooting a high contrast object with a large aperture, a green or purple outline will appear at the edge of the highlighted part, which is called dispersion. Serious dispersion will cause color distortion and affect the overall performance of the picture. In terms of dispersion, the RF-S10-18mm F4.5-6.3 IS STM lens has no dispersion when the aperture is fully open.

Screenshot of 10mm end dispersion test

Screenshot of 18mm end dispersion test

Lens dark angle test

For an ultra wide angle lens, the dark angle has a certain impact on the overall picture. However, dark corners can also be easily eliminated in the later stage, so users need not worry too much. As for this lens, since the initial aperture of Canon RF-S10-18mm F4.5-6.3 IS STM lens is small, no dark angle can be seen when the aperture is fully open at either the 10mm end or the 18mm end.

Concealed corner at 10mm end

Hidden corner at 18mm end

Lens distortion test

The distortion suppression performance of Canon RF-S10-18mm F4.5-6.3 IS STM lens is very excellent. From our actual shooting of brick walls, the distortion is very slight at the 10mm end and the 18mm end. This is due to the lens structure and the application of aspherical lenses.

Real shot of 10mm end distortion

18mm end distortion live shot

Lens anti shake test

Although Canon RF-S10-18mm F4.5-6.3 IS STM is an ultra wide-angle lens, it is also equipped with optical anti shake function and supports cooperative anti shake. Lens anti shake can be up to 4 levels. With five axis anti shake function Canon EOS R At 7:00, up to six levels of cooperative anti shake are supported.

The hand-held camera uses a slow shutter speed of 0.8s to shoot, and the anti shake effect is very obvious from the above comparison picture. The excellent anti shake performance can greatly improve the shooting success rate, especially in low light conditions.

Sample shot and summary

The emergence of Canon RF-S10-18mm F4.5-6.3 IS STM lens gives Canon dedicated micro users a new choice of wide-angle lens with high cost performance. The equivalent focal length of this lens is 16-28.8mm, covering the ultra wide angle to wide angle focal length. It can be used to shoot landscapes, environmental portraits, humanities and other subjects. In addition, it can also be conveniently used to record VLOG as video shot. Now let's enjoy the sample shot with Canon APS-C frame special micro EOS R7.

Focal length: 10mm, aperture: F9, shutter speed: 1/160s, sensitivity: ISO 100

Focal length: 10mm, aperture: F4.5, shutter speed: 1/160s, sensitivity: ISO 640

Focal length: 18mm, aperture: F6.3, shutter speed: 1/30s, sensitivity: ISO 100

Focal length: 10mm, aperture: F4.5, shutter speed: 1/500s, sensitivity: ISO 100

Focal length: 10mm, aperture: F7.1, shutter speed: 1/250s, sensitivity: ISO 100

Focal length: 10mm, aperture: F4.5, shutter speed: 1/4s, sensitivity: ISO 100

Focal length: 17mm, aperture: F7.1, shutter speed: 1/80s, sensitivity: ISO 100

Focal length: 10mm, aperture: F5.6, shutter speed: 0.3s, sensitivity: ISO 100

Focal length: 18mm, aperture: F6.3, shutter speed: 1/80s, sensitivity: ISO 800

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