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Panasonic Leica DG Vario-Summilux 25-50mm f/1.7 ASPH. Lens

BH #PA255017 • MFR #H-X2550
Panasonic Leica DG Vario-Summilux 25-50mm f/1.7 ASPH. Lens
Key Features
  • Micro Four Thirds System
  • 50-100mm (35mm Equivalent)
  • Aperture Range: f/1.7 to f/16
  • One Aspherical Element
Versatility within a short telephoto range, the Leica DG Vario-Summilux 25-50mm f/1.7 ASPH., from Panasonic, is a 50-100mm-equivalent zoom for Micro Four Thirds mirrorless cameras. Ideal for portraiture, fashion, events, and other mid-range subjects, this lens pairs the useful focal length range with an impressively bright constant f/1.7 maximum aperture, advanced optics, and a portable form factor.
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Panasonic Leica DG Vario-Summilux 25-50mm f/1... Overview

Versatility within a short telephoto range, the Leica DG Vario-Summilux 25-50mm f/1.7 ASPH., from Panasonic, is a 50-100mm-equivalent zoom for Micro Four Thirds mirrorless cameras. Ideal for portraiture, fashion, events, and other mid-range subjects, this lens pairs the useful focal length range with an impressively bright constant f/1.7 maximum aperture, advanced optics, and a portable form factor.

Normal-to-short-tele zoom is designed for Micro Four Thirds mirrorless cameras and offers a 50-100mm equivalent focal length range.
Super bright f/1.7 constant maximum aperture excels in low-light conditions and offers impressive depth of field control throughout the zoom range.
One aspherical element, three extra-low dispersion elements, and one ultra high-refractive index element all combine to produce well-controlled imagery void of color fringing, chromatic aberrations and spherical aberrations.
Linear AF motor, and an internal focusing system, delivers quick and quiet focusing performance along with virtually no focus breathing throughout the focusing range from 11" to infinity.
Focus clutch mechanism allows for intuitive switching between AF and MF modes, simply by sliding the focusing ring, and if paired with select Lumix cameras, Focus Ring Control can be used to tune the focus rotation feeling.
Physical aperture ring has a stepless, de-clicked design for smooth, silent aperture switching to benefit video applications.
Splash, dust, and freezeproof design benefits working in inclement weather conditions.
Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality.
Designed to closely match the Leica DG Vario-Summilux 10-25mm f/1.7 ASPH. lens, these two zooms are nearly identical in terms of form factor and weight, share the same 77mm filter ring diameter, and have unified color rendering for seamless switching between the two lenses.
UPC: 885170382145

Panasonic Leica DG Vario-Summilux 25-50mm f/1... Specs

Focal Length25 to 50mm (35mm Equivalent Focal Length: 50 to 100mm)
Maximum Aperturef/1.7
Minimum Aperturef/16
Lens MountMicro Four Thirds
Lens Format CoverageMicro Four Thirds
Angle of View47° to 24°
Minimum Focus Distance11" / 28 cm
Maximum Magnification0.21x
Optical Design16 Elements in 11 Groups
Diaphragm Blades9, Rounded
Focus TypeAutofocus
Image StabilizationNo
Filter Size77 mm (Front)
Dimensions (ø x L)3.4 x 5" / 87.6 x 127.6 mm
Weight1.4 lb / 654 g
Packaging Info
Package Weight2.61 lb
Box Dimensions (LxWxH)11.8 x 5.5 x 5.5"

Panasonic Leica DG Vario-Summilux 25-50mm f/1... Reviews

Best Lens I've attached to GH5/6

By Jay
Rated 5 out of 5
Date: 2022-10-19

Shoot a lot of talking heads and this lens has been an upgrade. Love the heft and manual feel. Have used cinema lenses a few times but never bought any, didn't fit my needs but this thing does as it chimes so well electronically with the GH5 and 6

Wonderful lens. Perfect partner for the 10-25mm f1.7.

By Kevin
Rated 5 out of 5
Date: 2021-11-30

I bought this for my GH5, but I'm really gearing up for the GH6. All I need now is the camera. It's a heavy lens, but well worth the effort to pack it around.

Remote Control Servo Motors

By Russell
Rated 5 out of 5
Date: 2022-05-26

I have been considering this lens for a long time. The release of the GH6 signaled a continuation of support for the M4/3 system. My problem with earlier panasonic zoom lenses (I own several) was the non-linear focus ring. The clutch on the focus lens of this lens means functional remote focus control along with zoom and iris control. So at last, I have an lens integrated to Panasonic electronics that I can use as a fully functional servo lens. I like the idea that a triple PDMOVIE system gives servo motor functions to any compatible lens. Meaning I pay once for lens gear motors and have servo control of any lens. I spent a great deal of time on cameras with integrated servo control a like handle controls of the lens. I look forward to the day when the GH6 sensor gets moved to the Panasonic Box camera. On that day my studio will get a long overdue upgrade. The attached photo shows a ceiling rail mount used for top down shots of what the talents hands are doing in How To productions. With total remote control of the lens and a remote Atomos recorder we have functional remote control of this rig on this mount or on a crane.

This is the reason to stay in M43.

By Zhihao
Rated 5 out of 5
Date: 2022-04-27

Paired with the GH6, I was blown away by the color and contrast out of this lens. It reminds me of Fuji GFX 50S with adapted vintage Leica glass. This lens feels like a real Leica, but for $1800 rather than $6000! Combined with 10-25, this is the only pair of zooms that can double as photography and cine lenses. You might wonder why get this when you can get FF glass with larger equivalent aperture and less $$? Well, I've used sigma 24-70f2.8 before, it was blown out of the water by the 10-25, in terms of color, sharpness, contrast. The 10-25 and 25-50 are better than a lot of FF glass while cheaper. However I ended up return it because at 50mm there's a slight optical mis-alignment in the bokeh. I will definitely get it in the future when I visit the store in person.

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