The Canon RF 100mm f/2.8L Macro IS USM and the Sony FE 100mm f/2.8 Macro GM are both 100mm macro lenses with a fast f/2.8 aperture, made for two rival mirrorless systems. Because the mounts differ, you will almost always choose the one that matches your camera. Confirm details such as magnification and focus range on each maker’s page.
What These Lenses Are For
A 100mm macro is a versatile tool. It handles small subjects like flowers, insects, and product details, and it also gives a flattering compression for portraits. The focal length keeps a comfortable distance between lens and subject, which helps with lighting and with wary insects.
Key Differences
| Trait | Canon RF 100mm Macro | Sony FE 100mm Macro GM |
|---|---|---|
| Mount | Canon RF | Sony E (FE) |
| Focal length | 100mm | 100mm |
| Aperture | f/2.8 | f/2.8 |
| Premium line | L series | G Master |
Both belong to their makers’ top lens tiers, which means they are aimed at demanding users. Differences show up in details: control rings, switches, close focus behavior, and how each handles the out-of-focus background. These are best compared through the makers’ own descriptions and sample images, as we have not used either lens.
Deciding Which to Choose
- Match your mount. This settles the question for most people.
- If you are choosing a system, compare the whole lens lineup, not just macro options.
- Check which accessories you already own, such as filters, extension tubes, or flash units, and see whether they fit.
- Think about whether you will use the lens mainly for macro or mainly for portraits, then read about the features that matter for that use.
Tips for Close-Up Work
- Shoot on a tripod when possible, and use a remote release or the self-timer.
- For more depth of field, try an aperture around f/8 to f/11 as a flagged baseline.
- Control wind outdoors. Even a gentle breeze moves flowers enough to blur a frame.
- Use a diffuser to soften harsh sun.
Before you buy, also read how each maker describes its stabilization for close work. Macro stabilization is designed to handle the shake that matters at short distances, and the wording on each maker’s page will show what is claimed. Treat those descriptions as the maker’s own statements and compare them with sample images from independent photographers.
FAQ
Does a 100mm macro need image stabilization?
It helps for handheld work, but a tripod is still the best path to sharp results at high magnification.
Can I use these lenses for portraits?
Yes, a 100mm focal length is a common portrait choice.
The Short Version
These lenses do the same job in different systems. Choose the Canon RF 100mm f/2.8L Macro IS USM for Canon RF cameras and the Sony FE 100mm f/2.8 Macro GM for Sony E cameras. Verify specifications with each maker.
