Need help?Do you have a question about the NiSi 4/15mm and is the answer not in the manual?
Describes how to attach and detach the rear lens cap from the camera.
Guides on aligning markers and mounting the lens securely to the camera body.
Explains the procedure to safely detach the lens from the camera mount.
Instructions for attaching and removing the front lens cap using its clips.
Details on attaching and detaching the lens hood, including inverted storage.
Advice on using the manual focus ring and understanding the depth of field scale.
Warns against pointing the lens at the sun and explains fire hazards from sunlight reflection.
Provides guidelines for safe transport and storage, including temperature and humidity.
Advises against self-disassembly and directs users to contact dealers for maintenance.
Outlines warranty periods based on different regional regulations.
Information on how to obtain customer support via local dealers or the official website.
The NiSi 4/15mm is a manual focus lens designed for full-frame mirrorless camera systems, offering optimal image quality within a compact and streamlined appearance. This lens is engineered to support photographers and videographers in capturing stunning visuals, breaking the traditional paradigm of needing a small aperture to create sunstars.
The primary function of the NiSi 4/15mm lens is to provide a super wide-angle perspective for full-frame cameras. Its optical design is meticulously crafted to retain high image definition from the center to the corners, ensuring sharpness and clarity across the entire frame. The lens features 10 straight aperture blades, which are a key element in its ability to produce distinct sunstars from F4 all the way to F22. This allows for creative flexibility, as photographers can achieve the desired sunstar effect without being forced to use extremely small apertures, which can sometimes compromise overall image quality due to diffraction.
The lens boasts a 112° field of view, which is notably wider than the regular angle of view for a standard 15mm focal length, effectively providing an angle equivalent to a 14.5mm focal length. This expansive field of view is ideal for landscape, architectural, and astrophotography, allowing users to capture vast scenes with impressive scope.
Its minimum focal distance of 0.2m enables photographers to create stunning visual impact by bringing close-up foreground subjects into sharp focus while maintaining a wide background perspective. This feature is particularly useful for adding depth and dimension to images. The lens elements are constructed from high-quality optical glass, incorporating one double-sided aspherical element and two extra-low dispersion elements. These specialized elements work in conjunction to minimize chromatic aberration, distortion, and vignetting, resulting in images with superior color accuracy and reduced optical flaws.
NiSi has also integrated anti-reflection film technology into the lens design. This technology is crucial for improving light transmittance, which means more light reaches the camera sensor, leading to brighter and clearer images. Furthermore, it effectively reduces lens flare and stray light, common issues that can degrade image quality, especially when shooting into bright light sources. The lens's hard surface coating technology enhances the toughness and waterproofing of the elements, contributing to its durability and performance in various environmental conditions.
The all-metal construction of the lens ensures durability and safety, providing a robust feel and long-lasting performance. The paint-etched logo adds a classic aesthetic, reminiscent of cinema lenses, which speaks to NiSi's commitment to both functionality and design. The focus ring is designed for smooth handling, allowing for comfortable and accurate adjustments, which is essential for manual focus lenses. A scale attached to the focus ring indicates the depth of field for the selected aperture, aiding photographers in achieving precise focus.
The NiSi 4/15mm lens supports standard 72mm circular filters and 100mm filter holder systems. This compatibility allows photographers to easily experiment with and utilize a wide range of filters, such as neutral density (ND) filters, polarizers, and graduated ND filters, to enhance their creative control over lighting and exposure.
Using the NiSi 4/15mm lens involves several straightforward steps for mounting, focusing, and general handling. To connect the lens to your camera, first remove the rear lens cap. Align the yellow marker on the lens with the corresponding marker on the camera lens mount. Insert the lens into the mount and rotate it until you feel and hear a distinct click, indicating that the lens is securely locked into place. To remove the lens, press the release button on the camera body and rotate the lens fully before detaching it.
Inserting and releasing the lens cap is also simple: press the two clips on the sides of the lens cap to either attach or remove it. For the lens hood, align its yellow point with the yellow marker on the lens and rotate it clockwise to secure it. To remove the lens hood, rotate it anti-clockwise. An additional practical feature is that the lens hood can be inserted in an inverted position, which is beneficial for more compact storage and transport, protecting the lens while minimizing space.
As a manual focus lens, achieving sharp focus requires rotating the focus ring slowly and deliberately. The depth of field scale on the focus ring serves as a helpful guide, indicating the range of acceptable sharpness for your chosen aperture setting. This allows for precise control over what parts of your image are in focus.
The lens's ability to create 10-bladed sunstars from F4 to F22 is a significant creative advantage. While the lens can produce sunstars at F4, photographers are encouraged to experiment with different apertures to find the best setting for their specific composition, as using an aperture that is too small might lead to a reduction in overall image quality.
Proper maintenance is crucial for ensuring the longevity and optimal performance of the NiSi 4/15mm lens. It is essential to keep the lens away from dusty and humid environments to prevent the accumulation of particles and moisture, which can degrade optical performance and potentially damage internal components.
To protect the lens from physical damage, avoid direct clashes with other objects. When not in use, always ensure the lens cap is inserted to protect the front element. Due to the light-gathering properties of the lens, leaving the glass exposed to direct sunlight can pose a fire hazard, so it's important to keep it covered when not actively shooting.
For cleaning, use an air blower to remove dust from the lens surfaces before resorting to other cleaning tools. This prevents scratching the delicate lens coatings. If the lens needs more thorough cleaning, consult the instruction manual for recommended cleaning methods and products.
Condensation can occur when the lens is moved between environments with sudden temperature changes. To mitigate frosting, it is advisable to keep the lens in its lens bag or a sealed plastic bag until its temperature has acclimatized to the ambient conditions. This gradual temperature adjustment helps prevent moisture from forming on the lens elements.
For long-term storage, especially in high humidity locations or when the lens is not in regular use, it is recommended to store it in a dry cabinet. The permitted temperature range for use and storage is between -10℃ and 50℃.
It is strongly advised not to disassemble, refit, or repair the lens yourself, as this can damage the product and void its warranty. For any required maintenance or repairs, contact local dealers or visit NiSi's official website for professional assistance.
General| Focal Length | 15mm |
|---|---|
| Maximum Aperture | f/4 |
| Minimum Aperture | f/22 |
| Angle of View | 112° |
| Diaphragm Blades | 7 |
| Lens Mount | Sony E, Fujifilm X, Micro Four Thirds |
| Minimum Focus Distance | 0.2m |
| Weight | 500g |
| Special Elements | Aspherical |
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