Question 1

What is the Canon EF 100mm f/2.8 L Macro IS USM good for?

Accepted Answer

The 100mm focal length sits in a sweet spot that works for both extreme close-up macro and everyday portraiture. For macro, the 0.3 m minimum focus distance lets you fill the frame with small subjects like flowers or insects while keeping enough distance not to scare them off. For portraits, 100mm compresses facial features in a natural, flattering way — similar to how a face looks to the human eye — and the f/2.8 aperture separates your subject from the background cleanly.

Question 2

Is the Canon EF 100mm f/2.8 L Macro IS USM good for portraits?

Accepted Answer

Yes — macro lenses are designed for close-up work, but 100mm is also a classic portrait focal length. You get natural facial compression, a comfortable shooting distance (you're not in your subject's personal space), and 9 rounded aperture blades that produce smooth, circular bokeh at f/2.8. The IS also helps in lower-light portrait situations like indoor receptions or golden-hour shoots where you'd rather stay off a tripod.

Question 3

What is the sharpest aperture for the Canon EF 100mm f/2.8 L Macro IS USM?

Accepted Answer

For macro work where depth of field matters, the sweet spot is generally around f/11 to f/13 — that's where diffraction hasn't kicked in yet but you get enough depth of field to keep a subject sharp across its full length. For portraits or subject isolation, f/2.8 to f/5.6 gives you maximum subject separation. Wide open at f/2.8 the lens is still very sharp at the focus point — it just requires precise focus placement.

Question 4

What is the difference between the Canon EF 100mm f/2.8 L Macro IS USM and the non-L Canon 100mm macro?

Accepted Answer

The L version adds two things the non-L (Canon EF 100mm f/2.8 Macro USM) doesn't have: image stabilisation and Canon's L-series weather sealing. IS is especially useful for handheld macro shots where camera shake is amplified at close focusing distances. The optical formula and maximum aperture are similar, but the L build quality is noticeably more robust — and it shows in the weight difference too.

Question 5

Does the Canon EF 100mm f/2.8 L Macro IS USM work on Canon RF mirrorless cameras?

Accepted Answer

Yes — via the Canon EF-EOS R adapter it mounts on any Canon RF body. Autofocus, image stabilisation, and aperture control all work normally through the adapter. If you're already invested in EF glass and are considering a move to Canon mirrorless, this lens is one you won't need to replace immediately.

Question 6

What filter size does the Canon EF 100mm f/2.8 L Macro IS USM use?

Accepted Answer

The filter thread is 67 mm. Worth noting: the front element does not rotate during focusing, which makes it straightforward to use polarising or graduated ND filters without having to readjust them after you lock focus.

Question 7

How does the Canon EF 100mm f/2.8 L Macro IS USM compare to the Sigma 105mm macro or Tamron 90mm?

Accepted Answer

The Tamron 90mm and Sigma 105mm macro lenses are credible alternatives and are typically available at a lower price point. The Canon L version distinguishes itself with Canon's native USM autofocus (fast and silent — handy for video and moving subjects), L-series weather resistance, and the IS system. If you're primarily shooting on a tripod in controlled conditions, the non-IS alternatives are worth considering. If you shoot a lot handheld or in mixed environments, the Canon L's IS and sealing make a practical difference.

Question 8

Is buying a used Canon EF 100mm f/2.8 L Macro IS USM worth it?

Accepted Answer

For this particular lens, yes — the L-series construction means it tends to age well. The main things to verify on a used copy are: IS engages without grinding or noise, USM autofocus is smooth and doesn't hunt, and the front and rear elements are free of fungus or heavy cleaning marks. On Camera-tweedehands.nl, each lens is individually photographed so you can inspect it before buying, and every item comes with a minimum 12 months warranty.

Mount	Canon EF
Focal range	Short Telephoto, Macro
Prime / Zoom	Prime
Focal length (min)	100 mm
Focal length (max)	100 mm
Max. aperture	f/2.8
Stabilisation
Weight (Grams)	625
Year of release	2009
Auto Focus

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Canon EF 100mm f/2.8 L Macro IS USM

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About the Canon EF 100mm f/2.8 L Macro IS USM

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Who is the Canon EF 100mm f/2.8 L Macro IS USM for?

Buying a used Canon EF 100mm f/2.8 L Macro IS USM

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