Fujifilm announced the launch of the "Fujilong Lens GF20-35mmF4 R WR" (GF20-35mmF4 R WR). It is a new member of the GF interchangeable lens lineup, specially designed for GFX series of reflectionless digital cameras, with a medium format sensor equivalent to about 1.7 times the full-frame 
5mm sensor.
GF20-35mmF4 R WR is a wide-angle zoom lens that covers a variety of focal lengths, from ultra-wide angle 20mm to wide angle 35mm (equivalent 35mm format 16mm-28mm focal length). With the advanced features of the GFX series cameras, the wide-angle lens with a recent focal length of only 20mm (16mm equivalent 35mm format) can capture fine detailed information such as vast landscapes or cityscapes with high precision and high resolution. The wide-angle viewing is much wider than the human eye's field of view, allowing you to take pictures of subjects directly in front of you from close range. Unlike traditional medium format photography equipment, this lens is easy to use and has an F4 constant aperture throughout the entire zoom range. In addition, its lenses are compact and lightweight for improved portability. It is perfect for users who travel long distances to find vast wilderness landscapes, and is also suitable for taking panoramic views of small spaces, unique perspectives, or scenes with documentary style. Enjoy the fun of wide-angle lenses and capture every detail in front of you with the huge amount of light input that only a medium format photography system can provide.
GF20-35mmF4 R WR consists of 10 groups of 14 pieces, including three aspherical lenses, one ED aspherical lenses and three ED lenses. It can effectively control various types of aberrations and provide excellent image resolution performance. To suppress ghosting and lens flare common in wide-angle lenses, the new lens is coated with a nano-GI (gradient refractive index) coating that effectively controls tilted incident light to minimize ghosting and lens flare and achieve image clarity .
GF20-35mmF4 R WR adopts an extremely compact design, and although it is a constant F4 ultra-wide-angle zoom lens, it weighs only 725g. The commonly used 82mm filter diameter is compatible with a variety of filters, broadening the range of visual expression. Traditional wide-angle lenses tend to be large in size, but Fujifilm has a compact design for this lens, making it ideal for landscape photographers looking for a wide range of views outdoors for a long time.
1. Product features
(1) As a wide-angle zoom lens, it expands the wide-angle product line of GF series lenses, aiming to pursue excellent image quality
·The focal length range of the new lens ranges from ultra-wide angle 20mm to wide angle 35mm (equivalent 35mm format 16-28mm focal length ), which is the widest among Fujifilm GF series lenses, captures detailed subjects in vast landscapes or urban landscapes and uses the unique perspective of wide angle lenses.
· GF20-35mmF4 R WR consists of 10 groups of 14 pieces, including three aspherical lenses, one ED aspherical lenses and three ED lenses, which can effectively control distortion and chromatic aberration and achieve excellent image resolution performance. Therefore, this lens can present all the information captured in a wide-angle viewing angle with higher accuracy.
·The lens uses Fujifilm's unique nano GI coating technology. When incident light enters the lens, the coating will smoothly change the refractive index of the incident light to reduce the reflection of light from , which can effectively reduce ghosting and lens flare even if there is tilted incident light.
consists of 10 groups of 14 pieces (including three aspherical lenses, one ED aspherical lenses and three ED lenses)
(2) adopts a compact design, adding portability to medium format cameras
·The structure of the lens is almost symmetrical , the aperture is located in the center, which not only achieves excellent aberration correction, but also keeps the body small and lightweight. Maximizes the optical design to the maximum extent to balance image quality and weight/volume with the short flange spacing unique to mirrorless cameras. The lens weighs only 725g and measures about 112.5mm. Although it is a wide-angle zoom lens, the filter diameter is only 82mm. The conventional 82mm filter port is selected to allow users to use various filters when shooting scenery. The internal zoom system maintains the fixed length of the lens, helping to reduce lens weight and simplify zoom operation.
··Each set contains four aspherical lenses to optimize the total number of lenses and its configuration. This combination not only effectively corrects aberration and ensures excellent image quality, but also keeps the body small and lightweight.The surface of the high curvature concave lens commonly used in wide-angle lenses is coated with a special coating with uniform thickness to reduce the ghosting caused by uneven coating thickness. ·The components around the lens mount are made of magnesium alloy , which is both light and sturdy. The shape of the component has been improved to keep the lens mount area thin and accommodate the internal zoom system, keeping the lens length unchanged. Unlike other bulky wide-angle zoom lenses, these features make this lens very easy to hold and operate.
(3) The lens is durable, dust-proof and drip-proof, and can work at temperatures as low as -10℃
· The lens barrel has 12 sealing points, which not only ensures dust-proof and drip-proof, but also ensures that the lens is as low as Works normally at a temperature of -10℃. The front lens is coated with a fluorine coating, which is water-resistant and stain-proof. Users can use their lenses to photograph scenery with peace of mind, whether it is snow-covered fields, scorching sunny tropical areas, or harsh outdoor environments.
