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Canon 5D Mark III — full-frame DSLR · 2012
Canon

Canon 5D Mark III

full-frame DSLR · 2012

78
/ 100
From $3,499
VS
Olympus OM-D E-M1 III · with dual-battery kit — Micro Four Thirds · 2020
Olympus

Olympus OM-D E-M1 III · with dual-battery kit

Micro Four Thirds · 2020

78
/ 100
From $1,949
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, Canon 5D Mark III lands at 78 and Olympus OM-D E-M1 III · with dual-battery kit at 78. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick Canon 5D Mark III if…

  • ✓Mature system, great used market
  • ✓Proven lens lineup
  • ✓Often on sale

Pick Olympus OM-D E-M1 III · with dual-battery kit if…

  • ✓Mature system, great used market
  • ✓Proven lens lineup
  • ✓Often on sale
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Ergonomics

Tie

Compared on the ergonomics sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Photo

Tie

Compared on the photo sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Autofocus

Tie

Compared on the autofocus sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

Olympus OM-D E-M1 III · with dual-battery kit

Specdex score per dollar at MSRP

Olympus OM-D E-M1 III · with dual-battery kit more score per dollar ($1,949 vs $3,499).

Canon 5D Mark III 78
vs
78 Olympus OM-D E-M1 III · with dual-battery kit

Score breakdown

Canon 5D Mark III
78
photo 78
video 70
autofocus 74
ergonomics 86
Olympus OM-D E-M1 III · with dual-battery kit
78
photo 78
video 70
autofocus 74
ergonomics 86

Specs side-by-side

Canon 5D Mark III versus Olympus OM-D E-M1 III · with dual-battery kit — full spec comparison
Spec Canon 5D Mark III Olympus OM-D E-M1 III · with dual-battery kit
Format
full-frame DSLR
Micro Four Thirds
Release year
2012
2020

Canon 5D Mark III

Pros
  • +Mature system, great used market
  • +Proven lens lineup
  • +Often on sale
Cons
  • −Older AF system
  • −Heavier than modern mirrorless
  • −Firmware updates trailed off

Olympus OM-D E-M1 III · with dual-battery kit

Pros
  • +Mature system, great used market
  • +Proven lens lineup
  • +Often on sale
Cons
  • −Older AF system
  • −Heavier than modern mirrorless
  • −Firmware updates trailed off

FAQ: Canon 5D Mark III vs Olympus OM-D E-M1 III · with dual-battery kit

Which is better, Canon 5D Mark III or Olympus OM-D E-M1 III · with dual-battery kit? +

Both score 78 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is Canon 5D Mark III worth the price? +

At $3,499, Canon 5D Mark III delivers a Specdex score of 78 — strongest in ergonomics.

Is Olympus OM-D E-M1 III · with dual-battery kit worth the price? +

At $1,949, Olympus OM-D E-M1 III · with dual-battery kit delivers a Specdex score of 78 — strongest in ergonomics.

Does Canon 5D Mark III or Olympus OM-D E-M1 III · with dual-battery kit last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is the better value, Canon 5D Mark III or Olympus OM-D E-M1 III · with dual-battery kit? +

Olympus OM-D E-M1 III · with dual-battery kit — more score per dollar ($1,949 vs $3,499). Specdex score per dollar at MSRP.