The best lenses for Canon R100 cover far more ground than the small camera body suggests. The EOS R100 uses Canon’s RF mount, accepts RF and RF-S lenses, and its APS-C sensor applies a 1.6x crop factor to full-frame focal lengths.
That last point changes the buying decision. A 50mm RF prime behaves like an 80mm equivalent field of view on this camera, while an RF-S lens is designed around the smaller sensor; I have made those practical differences clear below instead of treating every focal length as interchangeable.
Our shortlist uses the ten native RF-mount products in the supplied product data and matches them to real shooting jobs: a single travel zoom, a fast portrait prime, wide coverage for interiors, dedicated close-up work, and two levels of telephoto reach. There are no EF-M lenses here because they do not fit the R100.
One recurring community concern deserves an answer before the list: the R100 has no in-body image stabilization. I therefore give extra weight to lenses with optical IS when hand-held shooting, especially at long focal lengths, while recognizing that a fast prime can be the more useful answer in low light.
The top 3 picks answer most Canon R100 needs (August 2026)
For one lens to take everywhere, choose the RF-S 18-150mm. For portraits and dim rooms, the compact RF 50mm f/1.8 supplies the fast aperture missing from typical zooms. For distant subjects, the RF-S 55-210mm adds a practical 88-336mm equivalent range without making the camera feel oversized.
The Canon R100 lens options in 2026 are easiest to compare by use
The table below is a quick map rather than a substitute for the reviews. RF-S options keep the kit compact on the R100, while full-frame RF lenses remain fully compatible and can offer a fast aperture, macro capability, or much longer reach.
| Product | Specs | Action |
|---|---|---|
 Canon RF 50mm F1.8 STM |
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 Canon RF 100mm F2.8 L Macro IS USM |
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 Canon RF 16mm F2.8 STM |
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 Canon RF 85mm F2 Macro IS STM |
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 Canon RF-S 55-210mm F5-7.1 IS STM |
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 Canon RF 28mm F2.8 STM |
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 Canon RF 100-400mm F5.6-8 IS USM |
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View on Amazon |
 Canon RF 75-300mm F4-5.6 |
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View on Amazon |
 Canon RF-S 10-18mm F4.5-6.3 IS STM |
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View on Amazon |
| Canon RF-S 18-150mm F3.5-6.3 IS STM |
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View on Amazon |
1. The Canon RF 50mm F1.8 STM is the best portrait starter
Pros
- Fast f/1.8 aperture
- Compact 5.6 oz build
- Quiet STM autofocus
- Control ring
- Low-light capable
Cons
- No optical stabilization
- Not water resistant
The RF 50mm f/1.8 is the cleanest first prime upgrade for a Canon R100 owner who wants portraits with real background separation. On the R100, its angle of view is roughly an 80mm equivalent, a classic short-telephoto perspective for head-and-shoulders portraits and details at events.
I would choose it over another slow zoom when the goal is low-light photography or shallow depth of field. Canon specifies a bright f/1.8 aperture, a 0.30m close-focus distance, 0.25x magnification, and a compact 5.6-ounce body, so it does not spoil the R100’s portable appeal.
The portrait framing is the reason to pick this lens
The tighter 80mm-equivalent view helps keep facial features natural when you give the subject a little distance. The five-blade diaphragm will not make this an exotic portrait optic, but its f/1.8 aperture gives a far more direct route to blur than the long end of a variable-aperture kit zoom.
Canon lists a gear-type STM motor for smooth, quiet continuous autofocus in stills and video. That is useful for casual interviews, although a fixed 50mm perspective leaves little room to reframe from a small room.
The lack of optical IS shapes how to shoot with it
This lens does not add optical image stabilization to an R100 body that lacks IBIS. I would keep an eye on shutter speed for static scenes and use the fast aperture to avoid pushing sensitivity more than necessary.
It is also not water resistant, and its 43mm filter thread may mean buying a new filter size if your zoom lenses use something else. Those limits are reasonable tradeoffs only if portrait work, evening scenes, and a tiny carry setup matter more than zoom flexibility.
2. The Canon RF 100mm F2.8 L Macro IS USM is the specialist close-up choice
Canon RF100mm F2.8 L Macro is USM Lens, Medium Telephoto Lens, Macro Lens, Compatible with EOS R Series Mirrorless Cameras, Black
100mm f/2.8
1.4x macro
5-stop optical IS
Pros
- 1.4x magnification
- Bright f/2.8 aperture
- 5-stop optical IS
- Hybrid IS
- SA control ring
Cons
- 730g weight
- Fixed focal length
The RF 100mm f/2.8 L Macro is the dedicated answer for photographing insects, flowers, small products, and textures on the R100. Its 1.4x maximum magnification goes beyond life size, which is the meaningful specification here rather than simply calling it a “macro” lens.
With the R100 crop factor, 100mm produces a very tight field of view of roughly 160mm equivalent. That working distance can help when a subject is skittish, but it also makes this a deliberate lens to pack rather than an everyday walk-around option.
The stabilization supports the close-up mission
Canon specifies an optical stabilizer rated up to five stops and Hybrid IS that addresses angular and shift shake during macro work. That matters on the R100 because there is no in-body stabilization to supplement a lens without IS.
The fixed f/2.8 aperture also helps separate small subjects from their background. Its spherical-aberration control ring gives photographers a specific way to adjust the character of foreground and background bokeh, an unusual creative control in this group.
The size makes this a considered purchase for R100 owners
At 730g, this lens is substantially heavier than the compact RF-S zooms that suit the R100 so well. The pairing makes sense when macro output is the main objective, not when you want the smallest possible camera bag.
It uses a 67mm filter size and has water resistance in the provided specifications. For general portraits, the 100mm’s crop-sensor field of view can be restrictive; the RF 50mm or RF 85mm below is usually easier to use indoors.
3. The Canon RF 16mm F2.8 STM is the fast wide-prime option
Canon RF16mm F2.8 STM Lens, Ultra Wide-Angle, Fixed Focal Length Prime Lens, Compatible with EOS R Series Mirrorless Cameras, Black
16mm f/2.8
163g
5.11 inch close focus
Pros
- Bright f/2.8 aperture
- Very light 163g body
- Quiet STM focus
- Close focusing
- 43mm filters
Cons
- No optical stabilization
- Not water resistant
- No hood included
The RF 16mm f/2.8 is the best wide-angle prime here when you want a faster aperture than the RF-S ultra-wide zoom. Mounted on the R100, it delivers an approximately 26mm equivalent field of view, which is wide enough for travel scenes, groups, and hand-held talking-to-camera shots without becoming an extreme ultra-wide view.
At 163g, it stays proportionate to the R100. Canon also lists a 5.11-inch minimum focus distance and 0.26x magnification, letting you move close to foreground objects for a more involving wide-angle composition.
The f/2.8 aperture helps when the light falls
The f/2.8 maximum aperture is the clear reason to select this lens rather than the 10-18mm for night streets or indoor scenes. It also creates more opportunity for subject separation at close focusing distances, even though wide lenses naturally show more of the scene.
Its gear-type STM focus drive is designed for smooth and quiet continuous autofocus in video. The R100’s 4K autofocus limitations still come from the camera body, so I would not expect a lens alone to change that behavior.
The fixed focal length asks you to compose with your feet
A 16mm prime is not the same thing as an all-purpose wide zoom. It is best for photographers who know they want that approximately 26mm-equivalent look and are willing to change their position rather than twist a zoom ring.
There is no optical stabilization, no water resistance, and no hood included according to the product data. Keep those practical omissions in mind if you regularly shoot at slow shutter speeds or in poor weather.
4. The Canon RF 85mm F2 Macro IS STM is the portrait-and-detail upgrade
Canon RF 85mm F2 Macro is STM, Compact Medium-Telephoto Lens, Black, Compatible with EOS R Series Mirrorless Cameras
85mm f/2
0.5x macro
5-stop optical IS
Pros
- f/2 aperture
- 0.5x macro capability
- 5-stop optical IS
- Hybrid IS
- Control ring
Cons
- 499g weight
- Long field of view indoors
- No water resistance
The RF 85mm f/2 Macro is for R100 photographers who want more compression and more subject isolation than the 50mm can provide. On the crop sensor, its view is approximately 136mm equivalent, making it a strong choice for outdoor portraits where you can step back.
The f/2 aperture and 0.5x maximum magnification create a useful two-role lens: portraits one moment, larger close-up details the next. Canon gives the minimum focusing distance as 1.15 feet, making the macro feature practical for flowers, food, and product details rather than only distant portrait work.
The optical IS makes a difference on this camera body
Canon rates the optical stabilizer at up to five stops and includes Hybrid IS for macro shooting. That built-in assistance has particular value on an R100, where a non-stabilized prime otherwise relies completely on hand-holding technique.
The control ring offers direct setting changes, and the stated 67mm filter thread aligns with several larger RF lenses. These are small workflow benefits, yet the reason to buy this lens remains the combination of telephoto portrait rendering and close-focus ability.
The tighter crop-sensor view limits indoor versatility
A roughly 136mm-equivalent field of view needs room. I would not make this the first portrait lens for a photographer working mainly in homes, cafés, or compact studios; the RF 50mm is much easier in those spaces.
At 499g, it is also a more substantial partner for the R100 than the small f/1.8 prime. It has no water resistance and no zoom range, so choose it for a defined portrait-and-detail style rather than general travel coverage.
5. The Canon RF-S 55-210mm F5-7.1 IS STM is the light wildlife zoom
Canon RF-S55-210mm F5-7.1 is STM Telephoto Zoom Lens for Canon APS-C Mirrorless RF Mount Cameras, Compact, Lightweight, Optical Image Stabilization, Landscape, Portrait, & Travel Photos/Videos, Black
55-210mm zoom
88-336mm equivalent
4.5-stop IS
Pros
- Useful 88-336mm equivalent range
- 4.5-stop optical IS
- 270g weight
- UD and aspheric elements
- Close focus at 210mm
Cons
- f/5-7.1 aperture
- APS-C-only design
- No water resistance
The RF-S 55-210mm is the sensible first telephoto for wildlife, field sports, distant landscapes, and candid portraits with the R100. Its 55-210mm range becomes an 88-336mm equivalent view on APS-C, which is enough reach to make distant subjects visibly larger in the frame.
Community discussions regularly identify this type of native RF-S telephoto as a better path than adapting an older EF-S 75-300mm. The supplied data supports the practical case: it weighs 270g, has two UD elements and one aspheric element, and offers optical stabilization rated up to 4.5 stops.
The long-end handling is why IS matters here
At 210mm, small hand movements become obvious. The lens’s optical IS gives the R100 help it cannot get from its body, while the 0.73m minimum focus distance and 0.28x magnification at the long end add some flexibility for closer subjects.
The STM system is intended for smooth autofocus in video, and Canon lists Super Spectra Coating to reduce ghosting and flare. Those features make it a credible outdoor companion rather than just a lens to use at maximum zoom.
The variable aperture sets realistic expectations
The f/5-7.1 aperture makes this a daylight-first telephoto. Birds in deep shade, evening sports, and fast action can demand a higher sensitivity or slower shutter speed than a bright professional telephoto would.
This is an APS-C-only RF-S design and is not water resistant. Still, the small size, native compatibility, and 88-336mm-equivalent coverage make it the most balanced best wildlife lens Canon R100 choice for photographers who value portability.
6. The Canon RF 28mm F2.8 STM is the smallest street lens
Canon RF28mm F2.8 STM Lens, RF Mount, Wide-Angle, for Full-Frame Cameras
28mm f/2.8
59g pancake
0.23m close focus
Pros
- Tiny 59g pancake body
- f/2.8 aperture
- Three aspheric elements
- Quiet STM focus
- Close 0.23m focusing
Cons
- No image stabilization
- Fixed focal length
- Not water resistant
The RF 28mm f/2.8 makes the R100 feel like an easy camera to carry rather than a kit you have to plan around. At only 59g, its pancake construction is the most compact option in this group, and the crop sensor gives it an approximately 45mm-equivalent view close to a natural everyday perspective.
That field of view works for street photography, family moments, travel details, and casual environmental portraits. Canon’s listed f/2.8 aperture is helpful indoors, while the 0.23m close-focus distance lets you photograph a coffee cup, a market detail, or a foreground object without changing lenses.
The 45mm-equivalent view is the everyday advantage
Unlike the 16mm RF prime, this does not exaggerate near objects or pull in a vast background. It makes a good choice when you prefer framing that feels close to what your eye selects naturally, with enough width for context.
Three aspheric elements and Super Spectra Coating are specified to support image quality and control ghosting and flare. Its leadscrew STM focus motor is also intended for smooth, quiet video autofocus.
The absence of IS is the practical compromise
This pancake lens has no image stabilization, and neither does the R100 body. The f/2.8 aperture helps in low light, but it does not freeze a moving person; for that, shutter speed remains the priority.
It is a fixed focal length and not water resistant. I see it as an intentional “take it everywhere” lens, not a substitute for the 18-150mm when one camera must cover wide scenes, distant subjects, and everything between.
7. The Canon RF 100-400mm F5.6-8 IS USM is the reach-first wildlife choice
Canon RF100-400mm F5.6-8 is USM Telephoto Lens, Black, Compatible with EOS R Series Mirrorless Cameras
100-400mm zoom
5.5-stop optical IS
Nano USM
Pros
- 100-400mm reach
- 5.5-stop optical IS
- Nano USM autofocus
- 0.41x magnification
- 67mm filters
Cons
- 816g weight
- f/5.6-8 aperture
- No weather resistance
The RF 100-400mm is the lens to consider when the 55-210mm does not bring birds or distant wildlife close enough. On the R100 it reaches an approximately 160-640mm equivalent field of view, a major framing advantage for subjects that cannot be approached.
Canon specifies optical image stabilization up to 5.5 stops, a 0.41x maximum magnification at 400mm, and high-speed, smooth Nano USM autofocus. Those are meaningful strengths for a lens whose entire job is pulling far-away subjects into the frame.
The effective reach opens a different kind of photography
At the long end, 400mm on the lens becomes a 640mm-equivalent view on the R100. That reach can make a small bird, a distant animal, or a far sideline subject fill more of the image without relying as heavily on cropping afterward.
The 2.89-foot minimum focusing distance at 200mm is a useful secondary feature for larger flowers and nearby details. It is not a substitute for a macro lens, but it makes the zoom more flexible during a walk outdoors.
The weight and dim aperture require planning
The supplied specifications list 816g, so this setup feels very different from the R100 with a pancake or RF-S lens. I would carry it for a known wildlife or sports session, not as a casual all-day lens.
Its f/5.6-8 aperture makes good light especially valuable, and it is not water resistant. The lens has strong optical stabilization, but IS does not stop animal movement; faster shutter speeds are still needed for action.
8. The Canon RF 75-300mm F4-5.6 is the longest-entry telephoto
Canon RF75-300mm F4-5.6, Telephoto Zoom Lens, Compatible with EOS R Series Mirrorless Cameras, Black
75-300mm zoom
120-480mm equivalent
f/4-5.6
Pros
- 120-480mm equivalent range
- f/4-5.6 maximum aperture
- Servo AF
- Pupil detection
- Lightweight zoom design
Cons
- No stabilization listed
- Entry-level build
- Variable aperture
The RF 75-300mm gives the R100 an approximately 120-480mm equivalent angle of view. That is a useful range for a beginner wanting more reach for wildlife, outdoor sports, and compressed-background portraits without moving into the physical bulk of the 100-400mm.
Canon lists an f/4-5.6 maximum aperture, Servo AF, and pupil detection for tracking at the long end. It can therefore be a direct native RF answer for photographers who want powerful magnification and a straightforward telephoto zoom layout.
The 480mm-equivalent end is the headline feature
A 300mm setting becomes a 480mm-equivalent view on the R100, offering noticeably more reach than the RF-S 55-210mm. That can be important when your subject is far across a field or on the opposite bank of a pond.
The lens also uses a seven-blade diaphragm, which can help produce a more separated look when the shooting distance is right. Telephoto compression itself is part of the appeal for portraits and distant details.
The missing stabilization needs an honest check
No image stabilization is listed in the supplied product data. Since the R100 has no IBIS, I would treat steady hand-holding, ample light, or physical support as part of using this lens effectively.
The reviews identify entry-level build quality and a variable aperture as tradeoffs. If optical IS and the smaller 270g build are more important than extra reach, the RF-S 55-210mm remains the more forgiving R100 telephoto option.
9. The Canon RF-S 10-18mm F4.5-6.3 IS STM is the flexible ultra-wide zoom
Canon RF-S10-18mm F4.5-6.3 is STM Ultra-Wide-Angle Zoom Lens, Mirrorless, 4.0 Stops of Shake Reduction, Great for Vlogging & Selfies, Compact & Lightweight, for Video, Travel, Landscapes & Interiors
10-18mm zoom
16-29mm equivalent
4-stop optical IS
Pros
- 16-29mm equivalent coverage
- 4-stop optical IS
- Very light build
- Video-focused STM
- 0.5x manual-focus close-ups
Cons
- f/4.5-6.3 aperture
- APS-C-only design
- No water resistance
The RF-S 10-18mm is the best wide-angle lens Canon R100 pick when changing framing quickly matters more than having the RF 16mm’s brighter aperture. Its 10-18mm range equates to approximately 16-29mm, covering sweeping landscapes, interiors, architecture, group shots, and self-recorded video.
It is made for APS-C RF cameras and weighs only 5.28 ounces. That keeps the camera-plus-lens combination approachable for travel, where a heavy ultra-wide can defeat the reason for choosing the small R100 in the first place.
The zoom range is more useful than it first appears
At 10mm, the 16mm-equivalent view is genuinely wide for a small room, a dramatic landscape foreground, or a vlogging frame. At 18mm, the view tightens to roughly 29mm equivalent, which can look less exaggerated for travel scenes and groups.
Canon lists a 0.23x maximum magnification in autofocus and 0.5x in manual focus. That manual-focus close-up ability offers room for creative near-subject compositions even though this is not a dedicated macro lens.
The lens stabilization helps hand-held wide shooting
The built-in optical IS is rated up to four stops, a welcome pairing with the R100. The STM leadscrew autofocus is also designed for video, which suits the lens’s stated vlogging and selfie use cases.
Its f/4.5-6.3 aperture is slower than the RF 16mm f/2.8, so the prime remains better for low-light wide scenes. The 10-18mm is not water resistant and cannot cover a full-frame sensor, but both points are expected for a compact RF-S ultra-wide.
10. The Canon RF-S 18-150mm F3.5-6.3 IS STM is the best one-lens travel setup
Canon RF-S18-150mm F3.5-6.3 Telephoto Lens, Black
18-150mm zoom
8.33x range
4.5-stop optical IS
Pros
- Broad 18-150mm range
- 8.33x zoom ratio
- 4.5-stop optical IS
- Dynamic IS for video
- Smooth STM autofocus
Cons
- Variable f/3.5-6.3 aperture
- APS-C-only design
- No water resistance
The RF-S 18-150mm is the best all-around lens for Canon R100 photographers who do not want to change lenses during a trip, family day, or walk. Its 8.33x zoom range starts at a useful standard wide view and reaches a real telephoto setting, covering subjects that would need several primes to match.
Forum users frequently call this kind of lens the best “only lens” for the R100, and the specification sheet explains why. It has optical IS rated up to 4.5 stops, Dynamic IS for movie shooting, smooth lead-screw STM autofocus, and a 408g weight that remains manageable for a long-range zoom.
The range is the strongest argument for travel
An 18-150mm zoom can move from a landscape or group shot to a distant architectural detail without a lens swap. I would choose it for a trip where dust, time, or a missed moment makes carrying and changing multiple lenses less appealing.
It also works as an upgrade path from a basic standard zoom because the long end adds a distinctly different framing option. The seven-blade diaphragm and Super Spectra Coating round out a practical rather than specialized feature set.
The aperture is the tradeoff for one-lens convenience
Its f/3.5-6.3 maximum aperture is variable, so it cannot replace the RF 50mm f/1.8 for dim indoor scenes or pronounced portrait background blur. Pairing the 18-150mm with that small prime is a compact two-lens route that covers most beginner needs.
This is an APS-C RF-S lens, so a full-frame EOS R camera automatically crops when it is mounted. On the R100 that is no limitation at all; it is designed for this sensor format, though it is not water resistant.
The right Canon R100 lens starts with the subject and the crop factor
Start by deciding what your existing lens cannot do. A kit zoom owner who wants people pictures in available light needs a fast prime; a photographer who cannot get close enough to wildlife needs reach; and someone filming in a bedroom or traveling through cities needs a wide field of view.
On the R100, a full-frame RF lens receives the 1.6x crop multiplier for its field of view. That is why 16mm looks like roughly 26mm, 28mm like roughly 45mm, 50mm like roughly 80mm, 85mm like roughly 136mm, and 100mm like roughly 160mm.
RF and RF-S lenses both fit, but they serve different upgrade paths
RF is Canon’s full-frame mirrorless lens line, while RF-S is built around APS-C cameras such as the R100. Both mount directly on the R100, so compatibility is simple; select RF-S for compact crop-sensor zooms and RF when a particular full-frame prime, macro feature, or long zoom answers your need.
RF-S lenses are not wasted on the R100 just because RF lenses exist. The 10-18mm, 18-150mm, and 55-210mm were designed to deliver useful APS-C fields of view in compact packages, exactly where the small body has an advantage.
Optical IS matters because the R100 body has no IBIS
A stabilized lens can make hand-held static scenes easier at slower shutter speeds. The RF-S 10-18mm, RF-S 18-150mm, RF-S 55-210mm, RF 85mm Macro, RF 100mm Macro, and RF 100-400mm all list optical stabilization in the data.
IS is not a cure for subject movement. For running children, sports, or birds, use a shutter speed that freezes the subject first; stabilization mainly counters your own movement while the exposure is open.
Portrait photographers should choose framing before aperture
The RF 50mm f/1.8 is roughly 80mm equivalent and works well when space is limited. The RF 85mm f/2 is roughly 136mm equivalent, offering more compression and a tighter view but requiring a greater camera-to-subject distance.
The RF 100mm f/2.8 Macro goes tighter still at about 160mm equivalent. It is excellent for close-up work and controlled outdoor portraits, but it is not the simple all-purpose portrait recommendation for a beginner working indoors.
Wildlife shooters should balance reach, weight, and daylight
The RF-S 55-210mm reaches 336mm equivalent while weighing 270g, which makes it a sensible first long lens. The RF 75-300mm reaches 480mm equivalent, while the RF 100-400mm reaches 640mm equivalent and provides the most distant-subject framing of this list.
All long zooms have variable apertures, and their best results will be easier to achieve outdoors in brighter conditions. The 55-210mm and 100-400mm list optical IS; the 75-300mm product data does not list it, which is a serious difference on an unstabilized body.
EF and EF-S lenses need an adapter, while EF-M lenses do not fit
Older Canon EF and EF-S lenses can be used on the R100 through a Canon EF-EOS R mount adapter. That can make sense if you already own good EF glass, although the adapter adds physical length and can make a small body less compact.
EF-M lenses are a different mount and do not fit the EOS R100. If you are beginning with no existing collection, native RF and RF-S lenses are the simplest route because they mount directly and retain the compact balance the R100 is known for.
Video buyers should choose angle of view before autofocus marketing
The RF-S 10-18mm provides the widest useful vlogging view here, and its STM drive and four-stop optical IS support hand-held clips. The RF 16mm f/2.8 is the brighter wide option, while the RF-S 18-150mm supplies Dynamic IS and broad framing flexibility for travel video.
The R100’s contrast-detect autofocus limitation in 4K is a camera-body issue. A quiet STM or Nano USM lens remains helpful, but it cannot change the underlying autofocus behavior of the camera in that recording mode.
The most common Canon R100 lens questions have straightforward answers
What are the top 3 lenses every photographer should have?
For an EOS R100 owner, a practical three-lens set is the RF-S 18-150mm F3.5-6.3 IS STM for daily travel coverage, the RF 50mm F1.8 STM for portraits and low light, and the RF-S 55-210mm F5-7.1 IS STM for distant wildlife and sports. This covers wide-to-telephoto shooting while adding a fast aperture prime.
What is the Holy Trinity of Canon lenses?
The traditional Canon Holy Trinity refers to three professional f/2.8 zoom categories: ultra-wide, standard, and telephoto. For the compact APS-C EOS R100, a more practical equivalent is an ultra-wide such as the RF-S 10-18mm, an everyday zoom such as the RF-S 18-150mm, and a telephoto such as the RF-S 55-210mm.
What is the best all-around lens for Canon?
For the Canon EOS R100, the RF-S 18-150mm F3.5-6.3 IS STM is the best all-around choice in this list. Its 18-150mm range, 8.33x zoom ratio, optical IS, Dynamic IS, and STM autofocus cover travel, family scenes, landscapes, and distant details without changing lenses.
What is the standard lens for the EOS R100?
The RF-S 18-45mm F4.5-6.3 IS STM is commonly sold as the EOS R100 kit lens, but it was not one of the ten supplied products for this guide. Among the products reviewed here, the RF-S 18-150mm F3.5-6.3 IS STM is the most versatile standard-zoom-style upgrade because it starts at 18mm and extends to 150mm.
The best Canon R100 lens is the one that removes your current limit
For a single do-most-things lens in 2026, the RF-S 18-150mm is the clear starting point. Add the RF 50mm f/1.8 when portraits and available-light shots call for a faster aperture, or add the RF-S 55-210mm when distant subjects are the reason you bought a camera with interchangeable lenses.
The best lenses for Canon R100 are not necessarily the biggest RF optics. Pick the field of view you actually need, favor optical IS when hand-held stability matters, and keep the small R100 system balanced enough that you will want to take it out.