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Panasonic Lumix S 100mm f/2.8 Macro specifications and in-depth review

Panasonic Lumix S 100mm f/2.8 Macro

Manufacturer: Panasonic

The Panasonic Lumix S 100mm f/2.8 Macro is a fixed focal length lens built for the Leica L mount system, covering macro photography with a 1x magnification ratio and a minimum focus distance of just 0.2 m. It is weather-sealed and features a metal mount, a non-rotating front element, and a lens hood included in the box, making it a well-equipped option for field use. The lens weighs 298 g and accepts 67mm filters.

Optically, the lens operates at a fixed 100mm focal length with a maximum angle of view of 24°. The f/2.8 maximum aperture remains constant across its focal range, and the aperture mechanism uses 9 rounded blades for smooth out-of-focus rendering. It includes a built-in focus motor with infinity focus capability, though full-time manual focus override is not available. Optical image stabilization is not built into the lens, so stabilization relies on the camera body if applicable.

Pros
  • True 1x magnification allows life-size reproduction of subjects, covering the full range of close-up macro work
  • Weather-sealed construction with a metal mount adds durability for outdoor and field use
  • The non-rotating front element makes it straightforward to use polarizing or graduated filters without readjusting them after focusing
  • 9 rounded aperture blades support smooth, circular bokeh at wider apertures
  • A minimum focus distance of 0.2 m gives considerable working flexibility for close-up subjects
  • A lens hood is included in the box, providing immediate protection from flare without an additional purchase
Cons
  • No built-in optical image stabilization, so handheld macro shooting at close distances relies entirely on the camera body for stabilization
  • Full-time manual focus override is not supported, requiring autofocus to be switched off before manual adjustments can be made
  • At 100mm with a 24° angle of view, the lens is not versatile for general-purpose or wide-field photography
Who is this for?

This lens is well suited to photographers who specialize in close-up and macro photography, where the 1x magnification ratio and 0.2 m minimum focus distance allow precise, life-size reproduction of small subjects such as insects, flowers, or product details. The weather-sealed metal construction and non-rotating front element make it a practical choice for outdoor field work, where conditions can be unpredictable and filter use is common. The 9 rounded aperture blades and f/2.8 maximum aperture also make it a reasonable option for photographers who want controlled background separation in their close-up work.

Who is this NOT for?

Photographers who need built-in optical image stabilization for handheld shooting will find this lens demanding to use at close focusing distances, where even minor camera movement is amplified. Its fixed 100mm focal length and 24° angle of view make it unsuitable for anyone looking for a versatile everyday lens covering a range of shooting scenarios. Additionally, the lack of full-time manual focus override will be a drawback for users who frequently switch between autofocus and manual control mid-shoot without interrupting their workflow.

General info:

lens type Wide-angle, Prime
lens mount Leica L
is weather-sealed (splashproof) ✓
Has a metal mount ✓
weight 298 g
Front element doesn't rotate ✓
Includes lens hood ✓
filter size 67 mm

The Panasonic Lumix S 100mm f/2.8 Macro is a prime wide-angle lens built for the Leica L mount, weighing 298 g and accepting 67mm filters. It features a metal mount and weather-sealed construction, making it suitable for use in varied shooting conditions. The front element does not rotate during focusing, which is useful when working with polarizing or graduated filters, and a lens hood is included in the box.

Optics:

maximum focal length 100 mm
minimum focal length 100 mm
has built-in optical image stabilization ✕
maximum angle of view 24°
minimum angle of view 24°
magnification 1x

This is a fixed focal length lens at 100mm with a constant angle of view of 24° and a 1x magnification ratio, making it a true macro lens capable of reproducing subjects at life size. Built-in optical image stabilization is not included.

Aperture:

wide aperture (main camera) 2.8f
widest aperture at maximum focal length 2.8f
aperture blades 9
Has rounded aperture blades ✓
smallest aperture at maximum focal length 2.8f
smallest aperture at minimum focal length 22f

The lens has a maximum aperture of f/2.8, which remains constant across its fixed focal length, and closes down to a minimum of f/22. Its aperture mechanism uses 9 rounded blades, a configuration that tends to produce smooth, circular out-of-focus highlights in the background.

Focus:

Can focus to infinity ✓
Has focus motor ✓
Has full-time manual focus ✕
minimum focus distance 0.2 m

The lens includes a built-in focus motor and can focus from a minimum distance of 0.2 m all the way out to infinity. Full-time manual focus override is not supported, meaning autofocus must be disengaged before manual adjustments can be made.

Benchmarks:

Final Verdict

The Panasonic Lumix S 100mm f/2.8 Macro is a purpose-built lens with a clearly defined scope — it exists to serve macro photographers working on the Leica L mount system, and its specification set reflects that focus without compromise. The 1x magnification ratio combined with a 0.2 m minimum focus distance gives it genuine macro capability, while the weather-sealed metal construction and non-rotating front element add practical durability for field use. Its limitations — no optical image stabilization and no full-time manual focus override — are real considerations, but they sit within expected boundaries for a lens of this type. For Leica L mount users whose work revolves around close-up and macro subjects, the Panasonic Lumix S 100mm f/2.8 Macro represents a technically coherent and well-rounded choice.