1. Home
  2. Gear
  3. Cameras
  4. Canon
  5. Canon EOS M3

Canon EOS M3

Canon · Canon EF-M · 1.61× crop

The Canon EOS M3 uses the Canon EF-M mount with a 1.61× crop factor (about 22.3 × 14.9 mm sensor). Below: equivalent focal lengths, maximum shutter speeds for sharp stars, a hyperfocal distance chart, compatible lenses and how to check the shutter count.

Mount
Canon EF-M
Crop factor
1.61×
Sensor (approx.)
22.3 × 14.9 mm
Circle of confusion
0.0186 mm

Equivalent focal length & field of view

Lens focal lengthFull-frame equivalentDiagonal FOVHorizontal FOV
8 mm13 mm118.4°108.7°
10 mm16 mm106.6°96.2°
12 mm19 mm96.4°85.8°
14 mm23 mm87.5°77.1°
16 mm26 mm79.9°69.7°
18 mm29 mm73.4°63.6°
20 mm32 mm67.7°58.3°
24 mm39 mm58.4°49.8°
28 mm45 mm51.2°43.4°
35 mm56 mm41.9°35.3°
50 mm81 mm30.0°25.1°
85 mm137 mm17.9°14.9°
135 mm218 mm11.3°9.4°
200 mm323 mm7.7°6.4°
300 mm484 mm5.1°4.3°
400 mm645 mm3.8°3.2°

Multiply by the 1.61× crop factor for the full-frame equivalent field of view.

Milky Way exposure: NPF and 500 rule

Focal lengthNPF @ f/1.8NPF @ f/2.8Strict NPF @ f/2.8500 rule
8 mm22.5 s26.9 s14.5 s38.7 s
10 mm18.0 s21.5 s11.6 s31.0 s
12 mm15.0 s17.9 s9.7 s25.8 s
14 mm12.9 s15.4 s8.3 s22.1 s
16 mm11.2 s13.4 s7.3 s19.4 s
18 mm10.0 s11.9 s6.5 s17.2 s
20 mm9.0 s10.8 s5.9 s15.5 s
24 mm7.5 s9.0 s4.9 s12.9 s
28 mm6.4 s7.7 s4.2 s11.1 s
35 mm5.1 s6.1 s3.4 s8.9 s

NPF = (35 × f-number + 30 × pixel pitch) ÷ focal length, with a pixel pitch of 3.9 µm (typical for this format — exact resolution not in our database). The strict version (Michaud's detailed NPF for the galactic core) gives pin-point stars at 100% view; the 500 rule is a loose rule of thumb that shows trailing on modern sensors.

Hyperfocal distance chart

Focal lengthf/2.8f/5.6f/8f/11f/16
10 mm1.9 m1.0 m0.7 m0.5 m0.3 m
14 mm3.8 m1.9 m1.3 m1.0 m0.7 m
16 mm4.9 m2.5 m1.7 m1.3 m0.9 m
18 mm6.2 m3.1 m2.2 m1.6 m1.1 m
20 mm7.7 m3.9 m2.7 m2.0 m1.4 m
24 mm11 m5.6 m3.9 m2.8 m2.0 m
28 mm15 m7.6 m5.3 m3.9 m2.7 m
35 mm24 m12 m8.3 m6.0 m4.2 m

Focus at the hyperfocal distance and everything from half that distance to infinity is acceptably sharp (circle of confusion 0.0186 mm). Use the hyperfocal calculator for other settings.

Compatible lenses (329 in our database)

LensFocal lengthMax apertureMount
Canon EF 8-15mm f/4L Fisheye USM8–15 mmf/8Canon EF
Canon EF-S 10-22mm f/3.5-4.5 USM10–22 mmf/3.5Canon EF-S
Canon EF-S 10-18mm f/4.5-5.6 IS STM10–18 mmf/4.5Canon EF-S
Canon EF 11-24mm f/4L USM11–24 mmf/11Canon EF
Canon EF-M 11-22mm f/4-5.6 IS STM11–22 mmf/4Canon EF-M
Canon EF 14mm f/2.8L II USM14 mmf/14Canon EF
Canon EF 15mm f/2.8 Fisheye15 mmf/15Canon EF
Canon EF-M 15-45mm f/3.5-6.3 IS STM15–45 mmf/3.5Canon EF-M
Canon EF-S 15-85mm f/3.5-5.6 IS USM15–85 mmf/3.5Canon EF-S
Canon EF 16-35mm f/2.8L USM16–35 mmf/16Canon EF
Canon EF 16-35mm f/2.8L II USM16–35 mmf/16Canon EF
Canon EF 16-35mm f/2.8L III USM16–35 mmf/16Canon EF
Canon EF 16-35mm f/4L IS USM16–35 mmf/16Canon EF
Canon EF 17-35mm f/2.8L USM17–35 mmf/17Canon EF
Canon EF 17-40mm f/4L USM17–40 mmf/17Canon EF
Canon EF-S 17-55mm f/2.8 IS USM17–55 mmf/2.8Canon EF-S
Canon EF-S 17-85mm f/4-5.6 IS USM17–85 mmf/4Canon EF-S
Canon EF-M 18-55mm f/3.5-5.6 IS STM18–55 mmf/3.5Canon EF-M
Canon EF-S 18-55mm f/3.5-5.618–55 mmf/3.5Canon EF-S
Canon EF-S 18-55mm f/3.5-5.6 IS II18–55 mmf/3.5Canon EF-S
Canon EF-S 18-55mm f/3.5-5.6 III18–55 mmf/3.5Canon EF-S
Canon EF-S 18-55mm f/3.5-5.6 IS STM18–55 mmf/3.5Canon EF-S
Canon EF-S 18-135mm f/3.5-5.6 IS18–135 mmf/3.5Canon EF-S
Canon EF-S 18-135mm f/3.5-5.6 IS USM18–135 mmf/3.5Canon EF-S
Canon EF-S 18-135mm f/3.5-5.6 IS STM18–135 mmf/3.5Canon EF-S
Canon EF-S 18-55mm f/3.5-5.6 IS18–55 mmf/3.5Canon EF-S
Canon EF-S 18-200mm f/3.5-5.6 IS18–200 mmf/3.5Canon EF-S
Canon EF-S 18-55mm f/4-5.6 IS STM18–55 mmf/4Canon EF-S
Canon EF-S 18-55mm f/3.5-5.6 II18–55 mmf/3.5Canon EF-S
Canon EF 20mm f/2.8 USM20 mmf/20Canon EF
Canon EF 20-35mm f/3.5-4.5 USM20–35 mmf/20Canon EF
Canon EF 22-55mm f/4-5.6 USM22–55 mmf/22Canon EF
Canon EF-M 22mm f/2 STM22 mmf/2Canon EF-M
Canon EF 24-70mm f/2.8L USM24–70 mmf/24Canon EF
Canon EF 24-85mm f/3.5-4.5 USM24–85 mmf/24Canon EF
Canon EF 24-105mm f/4L IS USM24–105 mmf/24Canon EF
Canon EF 24mm f/1.4L USM24 mmf/24Canon EF
Canon EF 24mm f/2.824 mmf/24Canon EF
Canon TS-E 24mm f/3.5L24 mmf/3.5Canon EF
Canon EF 24-70mm f/2.8L II USM24–70 mmf/24Canon EF

Native and adapter-free compatible lenses from the Lensfun database. Third-party and adapted lenses may also work.

How to check the Canon EOS M3 shutter count

Canon stores the count only for some models (mostly recent mirrorless bodies such as the R-series). Older EOS DSLRs usually need a tethered utility that reads the counter over USB. Try `exiftool -ShutterCount -MechanicalShutterCount image.cr3`.

ExifTool tag: ShutterCount / MechanicalShutterCount. Always test an original, unedited file straight from the card.

Where to buy

Compare new and used prices at these retailers:

B&H PhotoAmazonKEH (used)MPB (used)

Other Canon EF-M cameras

FAQ

What is the crop factor of the Canon EOS M3?
1.61×. A 24 mm lens frames like a 39 mm lens on full frame.
What shutter speed should I use for the Milky Way with the Canon EOS M3?
With a 8 mm lens at f/2.8, about 27 seconds keeps stars sharp (NPF rule).
How do I check the shutter count on the Canon EOS M3?
Canon stores the count only for some models (mostly recent mirrorless bodies such as the R-series). Older EOS DSLRs usually need a tethered utility that reads the counter over USB. Try `exiftool -ShutterCount -MechanicalShutterCount image.cr3`.
Which lenses fit the Canon EOS M3?
Lenses for the Canon EF-M mount and compatible mounts (Canon EF, Canon EF-S) — 329 are listed above.