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Jupiter-11 135mm f/4 Lens

The KMZ 11 is a 135mm f/4 lens designed for M42 Screw Mount mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Jupiter-11 135mm f/4 Lens

Jupiter-11 135mm f/4 Lens

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Lens Overview — KMZ 11

The KMZ Jupiter-11 is a 135mm prime lens with a maximum aperture of f/4, designed for full-frame SLR camera systems. It mounts via the M42 screw mount, making it compatible with a wide range of vintage SLR bodies as well as modern mirrorless and DSLR cameras when used with an appropriate adapter. As a fully manual lens, all focusing is handled by the photographer, which suits deliberate, considered shooting styles.

The focal length places it firmly in telephoto territory, making it a practical choice for portrait work, compressed-perspective compositions, and moderate reach applications. The lens weighs 410g, which is substantial but not unusually heavy for a 135mm telephoto design, and accepts 49mm filters. Image stabilization is not present, which is typical for a manual prime of this type and era.

The Jupiter-11 appeals to photographers who value hands-on control over their focusing and enjoy working with full-frame coverage on a classic M42 platform. Its prime construction means there are no zoom compromises — the 135mm focal length is fixed, encouraging intentional framing and deliberate movement within a scene.

Key Features — KMZ 11

135mm Telephoto Prime: Fixed focal length delivers a dedicated telephoto perspective well-suited to portraits and compressed-perspective compositions.

f/4 Maximum Aperture: Moderate maximum aperture provides background separation while keeping the lens compact and lightweight for its class.

M42 Screw Mount: Universal M42 mount adapts easily to a wide range of modern mirrorless and DSLR bodies with inexpensive, readily available adapters.

Full-Frame Coverage: Designed to cover a full-frame image circle with no vignetting on full-frame film or digital bodies.

Manual Focus Only: Fully manual focus operation suits deliberate shooting styles and gives photographers direct, tactile control over focus placement.

49mm Filter Thread: Common 49mm filter diameter makes compatible filters easy to find and affordable.

Lens Specifications — KMZ 11

KMZ 11 full specifications
SpecDetail
Use CasesPortrait, Wildlife, Creative Effects
Lens TypePrime
FormatFull Frame
Zoom/PrimePrime
Focal Length135mm
Maximum Aperturef/4
Camera SystemSLR
Lens MountM42 Screw Mount
AutofocusNo
Focus TypeManual
Image StabilizationNone
Filter Thread49mm

Description — KMZ 11

The KMZ Jupiter-11 is a 135mm full-frame prime telephoto lens built for SLR camera systems using the M42 screw mount. With a maximum aperture of f/4, it delivers a fixed telephoto perspective well-suited to portraits, mid-range telephoto work, and any shooting style that benefits from a longer focal length. All focusing is manual, putting complete control in the photographer's hands and encouraging a more deliberate approach to image-making.

The lens weighs 410g and accepts 49mm screw-in filters, making it straightforward to pair with common filter systems. There is no image stabilization, so a steady hand or support is recommended when shooting at this focal length. The M42 mount means the Jupiter-11 can be used on a wide variety of camera bodies — both vintage SLRs and modern mirrorless or DSLR cameras via an adapter — making it an accessible option for photographers interested in exploring manual telephoto shooting on full-frame systems.

Pros — KMZ 11

  • ✓Full-frame coverage (lensFormat: Full Frame) means no vignetting concerns on full-frame sensors or film bodies
  • ✓M42 screw mount offers broad adapter compatibility across many modern camera systems
  • ✓Fixed 135mm focal length provides a dedicated telephoto perspective without optical trade-offs from zoom design

Cons — KMZ 11

  • ✗Manual focus only — no autofocus support, which may limit usability in fast-action or run-and-gun scenarios
  • ✗Maximum aperture of f/4 is relatively modest for a 135mm prime, limiting low-light performance and depth-of-field control
  • ✗No image stabilization, which can be challenging when hand-holding at 135mm

Videos — KMZ 11

Portrait of a Soviet Lens; JUPITER 11 — Blunty

Resources & Downloads — KMZ 11

Manuals & Guides

Frequently Asked Questions — KMZ 11

What camera mount does the Jupiter-11 use?+
The Jupiter-11 uses an M42 screw mount. This is a universal thread mount that can be adapted to many modern mirrorless and DSLR camera systems using readily available third-party adapters.
Does this lens cover full-frame sensors?+
Yes, the Jupiter-11 is specified as a full-frame format lens, meaning it produces an image circle large enough to cover a full-frame sensor or 35mm film frame without vignetting.
Is autofocus available on the Jupiter-11?+
No, the Jupiter-11 is a manual focus only lens. There is no autofocus mechanism, so the photographer must focus manually at all times.
What is the maximum aperture of this lens?+
The maximum aperture is f/4. This is the widest the lens can open, which determines its maximum light-gathering ability and minimum depth of field.
What filter size does the Jupiter-11 accept?+
The Jupiter-11 has a 49mm filter thread, so it accepts standard 49mm screw-in filters such as UV, polarizing, or ND filters.
How heavy is the Jupiter-11?+
The lens weighs 410g. This is a reasonable weight for a 135mm full-frame prime and should be comfortable for extended handheld shooting sessions.

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