Sigma 18-35mm F1.8 Black
Score: 76/100
Panasonic LUMIX G 25mm
Score: 79/100Rankings
The Panasonic LUMIX G 25mm f/1.7 ASPH is an ultra-compact, fast-aperture prime that delivers sharp images and quiet autofocus. It lacks weather sealing, image stabilization, and its corner performance drops at the widest aperture. Ideal for street, portrait and low-light shooters who prioritize size and speed over ruggedness.
The Sigma 18-35mm f/1.8 Art delivers exceptional low-light performance and razor-sharp images thanks to its fast constant aperture and sophisticated optical formula. However, it lacks image stabilization, is quite heavy (810 g), and offers no weather sealing. It is aimed at professionals and enthusiasts demanding top image quality on APS-C Canon bodies.
| Attribute | | |
|---|---|---|
— | 25 mmbest | |
— | 1.7best | |
| ↓ lower better | — | 0.25 mbest |
| ↓ lower better | 810 g | 125 gbest |
1.9best | — | |
9best | 7 | |
0.2best | — | |
17best | 8 |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compatibility(1) | ||
Lens Mount | Canon EF | Micro Four Thirds |
Features(1) | ||
Autofocus Type | HSM | Stepping motor |
Optics(6) | ||
Focal Length (mm) | 18-35 mm | 25 mm |
Maximum Aperture (f‑stop) | 1.8-16 | 1.7 |
Number of Optical Elements | 17 | 8 |
Number of Optical Groups | 12 | 7 |
Diaphragm Blades | 9 | 7 |
Coating | Super Multi-Layer Coating | None |
Build & Design(5) | ||
Filter Thread Size (mm) | 72 mm | 46 mm |
Weight (g) | 810 g | 125 g |
Length (mm) | 121 mm | 52 mm |
Maximum Diameter (mm) | 78 mm | 60.8 mm |
Construction Material | Thermally Stable Composite (TSC) material, brass bayonet mount | Plastic barrel, metal mount |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the Sigma 18-35mm f/1.8 as a revolutionary zoom that delivers prime-like sharpness, exceptional low-light performance, and a fast, quiet HSM focus system, positioning it as the fastest constant-aperture APS-C zoom on the market. However, they caution that its lack of stabilization, relatively heavy build, and limited focal range keep it from being a universal replacement for more versatile lenses.
Everyday users overwhelmingly praise the lens for its low-light brightness, buttery bokeh, and razor-sharp images straight from the camera, often calling it a game-changer for portrait and video work. Recurring complaints focus on the lens's weight, front-heavy feel, and the absence of image stabilization, which some find limiting for handheld video and longer shooting sessions.
“so light... not even perceive the extra weight”
Professional reviewers praise the lens for its delightfully lightweight and well-built feel, fast f/1.7 aperture, and quiet stepping-motor autofocus that suits both stills and video. They also note the high-quality aspherical/UHR optics that keep aberrations low. However, they criticize the lack of weather sealing, image stabilization, and the soft corner performance at the widest aperture, as well as the absence of a mechanical focus coupling.
Everyday users love how portable and light the lens feels, often describing it as "pancake-like" and "so light… not even perceive the extra weight." They appreciate the fast aperture for indoor and low-light shooting and the quiet AF for video. Common complaints focus on its fragility without weather sealing, occasional flare, and the inability to focus closely for macro work.
