Samsung NX 20mm F2 8 Pancake Avis | 54 Données comparées

Conversely, the review notes that the lens suffers from lackluster edge sharpness at maximum aperture, requiring stopping down to f/4-f/8 for optimal results, alongside high native barrel distortion that necessitates correction. Performance drawbacks include noticeable chromatic aberration, corner light falloff at f/2.8, and a susceptibility to veiling flare when strong light sources are nearby.

The Samsung 20mm NX Pancake lens is a compact prime lens designed for the NX camera system, offering a 30mm full-frame equivalent field of view. It is praised for its extremely small form factor, minimal 0.1% distortion due to in-camera correction, and the inclusion of the versatile iFn control button that allows users to adjust settings via the focus ring. However, its performance at the maximum f/2.8 aperture is disappointing, yielding only 1,541 lines in sharpness tests, which is well below the standard 1,800-line threshold for a sharp image. The review highlights significant drawbacks, including a high price point and the necessity of stopping down to f/4 to achieve acceptable sharpness. While the lens reaches its peak resolution at f/5.6, it faces stiff competition from the Samsung 16mm f/2.4 and the 30mm NX Pancake, both of which are considered superior in speed or sharpness. Additionally, the 20-50mm zoom lens is noted as a more cost-effective alternative, being $100 cheaper and sharper at the 20mm focal length despite its slightly slower aperture.

The Samsung 20mm f/2.8 NX iFunction Pancake lens delivers a highly versatile 30mm-equivalent angle of view when paired with an APS-C sensor, offering an experience that closely matches the human eye's natural field of focus. Its ultra-compact "pancake" design protrudes just 24mm from the camera body, making it an excellent, low-profile choice for street, landscape, and environmental photography. Testers praised the lens for its class-leading build quality and satisfying real-world performance, noting that the f/2.8 maximum aperture provides strong subject separation from out-of-focus backgrounds. Additionally, technical tests confirmed reliable sharpness, with MTF figures safely remaining above critical levels from wide-open apertures all the way down to f/11. However, the ultra-short lens barrel forces several physical and ergonomic compromises. The lens features only a single push-button and a control ring, meaning manual focusing requires users to navigate awkward menu settings on the camera body to change modes. On the optical side, image sharpness drops slightly at the widest apertures, and noticeable diffraction reduces MTF scores at f/22. The lens also displays slight signs of chromatic aberration during technical testing, though these...

The Samsung NX 20mm f/2.8 is an exceptionally lightweight (90 grams) and compact pancake lens designed specifically for Samsung NX APS-C cameras, providing a versatile 30mm full-frame equivalent field of view that is ideal for street, holiday, and wedding photography. Tested on the 28-megapixel Samsung NX1, the lens reveals a simple optical formula of 6 elements in 4 groups that delivers remarkably high transmission, fast and silent autofocus, and excellent sharpness across the frame starting at f/4. While unedited RAW files show a noticeable -4% barrel distortion and some corner softness at its maximum aperture, these defects are effortlessly corrected and rendered virtually invisible by automated lens profiles in-camera or during post-processing.

However, the reviewer points out notable drawbacks, specifically that the lens is expensive at $349.99 and delivers soft image quality when wide open at f/2.8. Lab testing via Imatest revealed it captures only 1,541 lines per picture height at its maximum aperture, falling well below the 1,800 lines needed for sharpness; photographers must stop down to f/4 or f/5.6 to achieve sharp photos. Ultimately, the review notes that the lens lacks the sharpness and speed of alternatives like the Samsung 30mm NX Pancake, and is even outperformed in sharpness by the less expensive 20-50mm NX zoom lens.

However, the lens suffers from several prominent drawbacks rooted in its compact design choices. LensTip points out that opting for an f/2.8 aperture makes it slower and bulkier than competitors and Samsung's own 30mm f/2 cousin. Edge-of-frame resolution lags significantly, producing images that are far from useful wide open at f/2.8 and requiring stopping down to f/4.0 to achieve decent clarity. Furthermore, the lens suffers from high, uncorrected coma in the corners, a noticeable yellow-green and blue cast from longitudinal chromatic aberration, and a weak uncorrected barrel distortion of -4.30% in RAW files. It also lacks any distance or depth of field scales, a metal exterior casing (which was swapped for plastic), and does not ship with a standard lens hood.

In terms of performance, the lens provides fast and quiet autofocus, with accurate manual focusing achieved through an electronic "by-wire" system. Key pros of this lens include its extremely small, lightweight, and pocketable form factor, making it ideal for street photography. Additionally, it boasts a reliable metal lens mount and useful iFn functionality. On the downside, the lens body is primarily constructed from plastic, and it relies on an extending inner lens tube for focusing rather than an internal focus mechanism. Furthermore, there is no physical AF/MF toggle switch on the lens body itself, requiring users to change focus modes through the camera's menu system instead.