Best Lens for Canon R10: 5 First Lenses Compared

For most Canon EOS R10 owners, the best first upgrade over the kit lens is a constant f/2.8 standard zoom: the Sigma 18-50mm F2.8 DC DN Contemporary for the smallest, lightest setup, or the Tamron 17-70mm F2.8 Di III-A VC RXD for extra reach. If you would rather carry one do-everything lens, pick the Canon RF-S 18-150mm F3.5-6.3 IS STM, add the RF 50mm F1.8 STM for background blur, and save the RF 100-400mm F5.6-8 IS USM for sports and wildlife.

How the R10's sensor changes what a lens shows

The R10 is one of Canon's APS-C EOS R bodies, alongside the R7, R50 and R100. Canon's own numbers show what that smaller sensor does to framing. Canon lists the RF-S 18-150mm as covering an equivalent focal length of about 29-240mm. That works out to a factor of roughly 1.6x. Digital Camera World describes the Sigma 18-50mm on Canon APS-C bodies as a 29-80mm equivalent zoom.

Use that 1.6x figure as a quick rule when you shop. Multiply the focal length on the box by 1.6 and you get a rough idea of how tight the lens will frame on your R10. Where the comparison table below says "1.6x math", the number is that arithmetic, not a figure the lens maker publishes.

Stabilization: which lenses have IS or VC

Stabilization deserves a close look with the R10. Canon rates the RF-S 18-150mm's built-in IS at 4.5 stops when used on the EOS R10 at 150mm, while on the EOS R7 the lens IS and the camera's in-body image stabilization work together for up to 7.0 stops. Digital Camera World's reviewer also points out that many of Canon's APS-C bodies lack image stabilization.

A stop of stabilization lets you hold a slower shutter speed steady by hand. In practice, plan on getting your stabilization from the lens. Here is how the five lenses line up:

• Canon RF-S 18-150mm F3.5-6.3 IS STM: IS rated at 4.5 stops on the R10, plus Dynamic IS for extra stabilization when recording video.
• Canon RF 100-400mm F5.6-8 IS USM: IS rated up to 5.5 stops with the EOS R, and up to 6.0 stops with the EOS R5's in-body system, both measured at 400mm. Canon's museum page for the lens gives no R10 figure.
• Tamron 17-70mm F2.8 Di III-A VC RXD: carries VC in its model name. The Tamron figures in this guide cover size and weight only, so confirm the VC rating on Tamron's listing before you buy.
• Sigma 18-50mm F2.8 DC DN Contemporary: no image stabilization.
• Canon RF 50mm F1.8 STM: Canon's description lists no image stabilization, and the model name carries no IS tag.

The Image Stabilization in Lenses guide explains how lens IS works and when it helps.

Quick comparison

Lens	Focal length	Approx. framing on R10	Max aperture	Stabilization	Weight	Length
Sigma 18-50mm F2.8 DC DN Contemporary (RF)	18-50mm	29-80mm	f/2.8 constant	None	300g	74.5mm
Tamron 17-70mm F2.8 Di III-A VC RXD (RF)	17-70mm	about 27-112mm (1.6x math)	f/2.8 constant	VC	530g	117.3mm
Canon RF-S 18-150mm F3.5-6.3 IS STM	18-150mm	about 29-240mm	f/3.5-6.3	IS, 4.5 stops on R10	about 310g	about 84.5mm
Canon RF 50mm F1.8 STM	50mm	about 80mm (1.6x math)	f/1.8	None listed	about 160g	about 40.5mm
Canon RF 100-400mm F5.6-8 IS USM	100-400mm	about 160-640mm (1.6x math)	f/5.6-8	IS	about 635g	about 164.7mm

Figures come from Sigma's RF-mount specifications and Digital Camera World's review, Tamron's RF-mount specifications, and Canon's lens pages. Tamron measures length from the front tip of the lens to the mount face.

Best standard zoom upgrade: Sigma 18-50mm F2.8 DC DN Contemporary

Sigma launched the RF-mount version on 11 July 2024. It was Sigma's first zoom designed for APS-C mirrorless cameras, now offered in native Canon RF mount. Digital Camera World notes it is an RF-S lens designed for APS-C bodies like the R7, R10, R50 and R100.

The main reason to buy it is the constant aperture: f/2.8 across the whole zoom range. Sigma says that makes blurry backgrounds easy for portraits and close-ups. Digital Camera World calls it essentially a standard trinity lens for Canon's APS-C cameras.

Compared with the Canon RF-S 18-45mm f/4.5-6.3 IS STM kit lens, Digital Camera World says Canon's lens is much smaller, stabilized and cheaper at $299, while the Sigma has a faster, constant aperture and weather sealing. If your R10 came with the kit lens, that is the trade you are making.

Size and handling

The RF version weighs 300g, measures 69.2mm by 74.5mm and takes 55mm filters. In PetaPixel's review of the E-mount version, the lens extends about another inch when zoomed to 50mm. Digital Camera World says it pairs well with the larger R7 and R10 as well as the compact R50 and R100.

Autofocus and close-ups

Sigma uses a stepping motor for fast, near-silent autofocus and says the lens suits video and moving subjects. Sigma also developed an AF control algorithm specifically for the RF mount, with support for Servo AF. The-Digital-Picture describes the focusing as fast, smooth and practically silent. PetaPixel heard some chirping from the motor in a quiet room while testing on a Sony a6600.

At the wide end, it focuses as close as 12.1cm for a maximum magnification of 1:2.8. That is close enough for food, flowers and product shots.

What reviewers flag

• No stabilization, which Digital Camera World singles out given how many Canon APS-C bodies lack it.
• Strong geometric distortion over much of the zoom range and noticeable color separation at the long end, in The-Digital-Picture's testing.
• A heavy reliance on in-camera correction, per Digital Camera World. The lens supports in-camera aberration correction on supported cameras, so leave lens corrections switched on in your R10's menu.
• Ghosting from strong light sources and color fringing on high-contrast edges, in PetaPixel's review.

Digital Camera World's reviewer tested the RF version on an EOS R5 in crop mode and an EOS R100. The mount is rubber-sealed. Sigma provides a 1-year limited warranty, and Sigma USA adds a limited 3-year extension.

Standard zoom with more reach: Tamron 17-70mm F2.8 Di III-A VC RXD

Tamron's Model B070 is the other constant f/2.8 standard zoom in this group. The Canon RF version is made under license from Canon. PetaPixel calls it perhaps the closest thing to the Sigma, with more reach because it extends to 70mm. By 1.6x math, that range frames like about 27-112mm on the R10, which gives you a short portrait length the Sigma does not reach.

The trade is size. The RF version weighs 530g and is 117.3mm long. That is about 230g heavier and roughly 43mm longer than the Sigma's RF version.

Tamron says the lens's circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture. That helps keep out-of-focus highlights, or bokeh, round when you stop down slightly.

In PetaPixel's 2021 review, the Tamron cost $250 more than the Sigma. Prices move, so compare current listings. None of the reviews cited in this guide tested the RF version of the Tamron, so lean on Tamron's specifications and recent buyer reviews of the RF model.

Sigma or Tamron: how to choose

• Choose the Sigma if you want the smallest f/2.8 zoom for everyday carry and you can keep shutter speeds up.
• Choose the Tamron if you want reach to 70mm for head-and-shoulders portraits and want the lens carrying the VC designation.
• Either way, check that the listing says Canon RF mount. Both lenses are sold in several mounts.

Sigma offers a Mount Conversion Service to convert other mounts of this lens to Canon RF. The Sigma vs Tamron guide compares the two brands more broadly, and Best Third-Party Lenses for Canon RF covers other options.

Best one-lens travel zoom: Canon RF-S 18-150mm F3.5-6.3 IS STM

Canon designed its RF-S series for RF mount cameras with APS-C sensors. The 18-150mm covers an equivalent of about 29-240mm in a body about 84.5mm long that weighs about 310g. That range takes you from a room interior to a distant building without a lens change.

It is the lens in this guide with a stabilization rating Canon publishes for the R10: 4.5 stops at 150mm. Canon adds Dynamic IS for extra stabilization when recording video. If you film handheld, that matters.

It also focuses close. Canon lists a minimum focusing distance of 0.17m between 18mm and 35mm, and a maximum magnification of 0.44x at 50mm.

The trade-off is a variable aperture that narrows to f/3.5-6.3. Indoors or at dusk, that pushes ISO higher than an f/2.8 zoom would. The Canon R10 Low Light Settings guide shows how to manage that, and Travel Photography With Zoom Lenses covers using a range like this on the road.

Best fast prime on a budget: Canon RF 50mm F1.8 STM

A prime trades zoom for a wider aperture. The RF 50mm F1.8 STM opens to f/1.8 with 7 aperture blades, which Canon says gives circular background blur. By 1.6x math it frames like about 80mm on the R10, a classic head-and-shoulders portrait length.

It is tiny: about 40.5mm long and about 160g. Canon says it builds on the optical design of the EF 50mm f/1.8 STM, using 6 elements in 5 groups. It focuses as close as 0.3m with a maximum magnification of 0.25x, enough for food and small items.

The focus ring doubles as a control ring that you can set to adjust shutter speed or aperture. Canon's description lists no image stabilization, so keep your shutter speed fast enough to freeze hand shake.

For more on getting blur from it, read Canon R10 Background Blur. If you are weighing focal lengths, Canon RF 50mm f/1.8 vs RF 35mm f/1.8 compares the two.

Best for sports and wildlife: Canon RF 100-400mm F5.6-8 IS USM

Canon positions this lens for people on stage or on the sports field, and for animals that are difficult to approach. Against the EF 70-300mm f/4-5.6 IS II USM, it adds 100mm at the telephoto end. By 1.6x math, it frames like about 160-640mm on the R10.

It is light for its reach: about 164.7mm long and about 635g. The optical design uses 12 elements in 9 groups, including one UD lens and one aspherical lens, which Canon says helps limit color fringing across the zoom range.

Autofocus is driven by Canon's Nano USM, an ultrasonic motor Canon describes as high-speed and high-accuracy, including for video. The built-in IS is rated up to 5.5 stops with the EOS R. It also focuses as close as 0.88m at 200mm, with a maximum magnification of 0.41x at 400mm, so flowers and insects are in range too.

The catch is the f/5.6-8 aperture. For fast action in shade or indoors, expect to raise ISO to keep shutter speeds high. Set up subject tracking first with the Canon R10 Autofocus Settings guide, and see Best Lenses for Sports & Action Photography for more telephoto options.

Which lens to buy first

• You shoot a bit of everything and want better low-light results than the kit lens: Sigma 18-50mm F2.8 DC DN Contemporary.
• You want f/2.8, more reach for portraits, and a VC-designated zoom: Tamron 17-70mm F2.8 Di III-A VC RXD.
• You travel and want one stabilized lens for everything: Canon RF-S 18-150mm F3.5-6.3 IS STM.
• You want blurred backgrounds for the least size and weight: Canon RF 50mm F1.8 STM.
• You shoot kids' sports, birds or wildlife: Canon RF 100-400mm F5.6-8 IS USM.

Many R10 owners end up with two lenses: one standard zoom and either the 50mm prime or the 100-400mm. Start with the lens that matches what you shoot most, then add the second once you know what the first one cannot do. For lens and accessory planning beyond these five, see Canon RF Lens Compatibility Guide and Canon EOS R10 Setup.