Panasonic 10-25mm f/1.7 Leica DG Vario-Summilux ASPH

The Panasonic Leica DG Vario-Summilux 10-25mm f/1.7 ASPH is a constant-aperture ultra-wide zoom for Micro Four Thirds cameras, delivering a bright f/1.7 opening across the entire focal range — from 10mm wide-angle to 25mm standard view.

Key Specifications

• Focal length: 10–25mm (equivalent to ~20–50mm on full frame)
• Maximum aperture: f/1.7 constant across the entire zoom range
• Aperture type: Constant — stays at f/1.7 whether you shoot at 10mm or 25mm
• Lens type: Ultra wide-angle zoom
• Autofocus: Yes
• Optical design: ASPH (aspherical elements) for reduced distortion and aberrations
• Branding: Leica DG Vario-Summilux — co-developed under the Leica optical quality standard
• Mount: Mirrorless Micro Four Thirds (MFT)

Who is the Panasonic 10-25mm f/1.7 for?

This lens is a genuine all-rounder for mirrorless Micro Four Thirds shooters who don't want to carry two primes. The constant f/1.7 aperture makes it genuinely useful for astro photography — a rare trait in a zoom lens. At 10mm you're wide enough to capture the Milky Way or dramatic landscapes, and at 25mm you have a classic street and vlogging angle of view. The f/1.7 opening also means you can shoot in dim indoor environments or evening street scenes without pumping ISO through the roof. Documentary filmmakers and vloggers love it because one lens handles everything from wide establishing shots to tighter talking-head framing — no swapping glass mid-shoot. If you're comparing zoom options, the Panasonic Leica DG Vario-Elmarit 8-18mm f/2.8-4 ASPH covers a wider range but sacrifices more than a stop of light. The Panasonic 25-50mm f/1.7 makes a logical companion if you want to extend your fast-aperture coverage into portrait territory. Panasonic designed this lens specifically to complement pro-grade Lumix bodies like the Lumix GH6 or Lumix S5 II, but it works on any MFT body from any brand.

Buying a used Panasonic 10-25mm f/1.7

This is a premium lens with a solid build, so buying it second-hand makes a lot of sense — you get Leica DG optical quality without the full new-price outlay. Every pre-owned copy on Camera-tweedehands.nl is individually photographed and professionally inspected before listing, so you know exactly what condition you're getting. All used lenses come with a minimum 12 months warranty (the exact period is shown on the variant listing). Given the lens's robust construction and the relatively gentle use cases it's typically put through — landscapes, vlogging, occasional astro — used copies tend to show up in excellent shape.