Leica 40mm f/2.4 Review: The Franken-Lens That Defies Convention——When Salvaging a Point-and-Shoot Gem Becomes an Act of Rebellion

The Sacrilegious Resurrection

In the pantheon of Leica optics, the Summarit 40mm f/2.4 occupies a heretical throne—a lens born in the Minilux/CM compacts, now reborn as an M-mount rogue. While purists decry “camera murder,” this 400Frankenstein(bodybutchery+400Frankenstein(bodybutchery+200 adaption fee) delivers 90% of a Summicron’s soul at 30% the cost. Your moral dilemma? Let’s call it creative recycling.


Optical Autopsy

1. Heritage DNA

  • Design: 6 elements/4 groups, cloned from 1973’s Summicron-C 40mm f/2
  • Aperture: f/2.4—Leica’s cheeky nod to non-conformity
  • Coatings: 1990s-era anti-flare witchcraft (pre-ASPH mystique)

2. Size Matters

  • Dimensions: 45mm x 35mm—smaller than a Summicron collapsible
  • Weight: 180g (lighter than your smartphone)

The “Leica Look” Decoded

Shoot this against Voigtländer’s Color-Skopar 35mm f/2.5, and the myth materializes:

SceneSummarit 40mm f/2.4Color-Skopar 35mm f/2.5
Portrait @ f/2.4Skin tones like aged parchmentClinical, digital-ready
Backlit LeavesGlow without CA, OOF swirlsHarsh edges, purple fringing
Night Bokeh14-blade circular highlightsHexagonal stress balls

This is Leica’s pre-digital je ne sais quoi—not measured in MTFs, but in whispered “Damn, that’s smooth.”


The 40mm Conundrum

Leica’s red-headed stepchild focal length serves multiple masters:

  • Street: 5% wider than 50mm = breathing room without 35mm’s distortion
  • Portrait: 0.6m MFD for intimate candids
  • Compromise: Too wide for classicists, too narrow for modernists—perfect for rebels

Build Quality: Expect Imperfect Perfection

  • Wobble Gate: Yes, the front element rattles like a spray can. So did Hemingway’s typewriter.
  • Focus Throw: 90° from 0.7m to ∞ (zone focus by muscle memory)
  • Aperture Click: Detents softer than a Leica M lens—think velvet switches

Adapt or Die: The Minilux Mining Rush

Market Reality Check (2023):

  • Leica Minilux: 800−800−1,200 (up from $300 in 2015)
  • Adaptation Cost: 150−150−400 (depending on machinist’s whiskey budget)
  • Alternative: Voigtländer 40mm f/1.4 MC ($500 new)

Verdict: If you find a donor Minilux under $600, cannibalize without guilt.


Who Should Buy This?

  • Film Purists: Craving compact M6 pairings
  • Digital Heretics: Sony A7C owners wanting “Leica glow” sans $3k tax
  • Contrarians: Those who’d rather explain their lens’ backstory than shoot

Avoid If: You think EXIF data matters.


Final Shot: Leica’s Trojan Horse

The 40mm f/2.4 is Leica’s greatest hustle—a gateway drug disguised as salvage. Use it for a month, and you’ll start eyeing 35mm Summicrons. But in a world of clinical mirrorless optics, this flawed gem reminds us: Character can’t be engineered, only inherited.

Rating: 4/5 (for poets) | 2.5/5 (for spec-sheet warriors)

A lens that shouldn’t exist—and thank God it does.


Pro Tips:

  • Pair with Ilford HP5 pushed to 1600—grain loves the Summarit’s soft contrast
  • Shoot at f/4 for Zone System-level depth
  • Ignore the wobble; it’s the lens’ way of saying “Relax, it’s just photography.”

Forty

millimeters,

Wobbles like a drunk samurai

Leica’s

bastard child.