The GF250mmF4 R LM OIS WR is a telephoto lens that achieves approximately 198mm in 35mm format equivalent, bringing together Fujifilm’s proprietary optical design technology: it offers high resolving power for supporting further enhancement of image resolution in the future. The lens is capable of capturing the atmosphere of any scene through a combination of high-resolution performance and rich bokeh effect. Attaching the “GF1.4X TC WR”, a 1.4x teleconverter provides coverage for telephoto shooting up to approximately 277mm in 35mm format equivalent, without any image quality deterioration. The lens is also equipped with the new focus pre-set function*1, which allows the photographer to instantly activate focus settings previously saved in the lens memory. The use of a magnesium alloy lens barrel reduces the product’s weight, and the dust and weather resistant specifications, which also provide the ability to operate in temperatures down to -10°C, ensure that this new lens will serve as a trusted partner for professional photographers.
The lens is composed of 16 lenses in 10 groups including one super ED lens and two ED lenses, reducing chromatic aberration and achieving excellent image quality. Especially, super ED lens is used to reduces the fluctuations in chromatic aberration depend on the shooting distance. It enables to shoot minimum 1.4m close focus, maximum 0.22 x magnification ratio, and tele-macro shots with large bokeh effects.
The lens is equipped with a powerful five-stop image stabilization function (CIPA guidelines). This allows photographers to make maximum performance of the GFX’s high image resolution even when taking telephoto shots where image shake might be obvious.
The lens’ functionality includes a focus limiter to enable faster autofocus speed by restricting focus range, focus pre-set for memorize focus settings previously set into the lens, and 4 focus control buttons located at the lens front enable to operate focus lock or autofocus.
*An upgrade to the GFX50S firmware is required to operate the focus pre-set function and focus control buttons.
This functionality is included in the new version of the GFX50S firmware that will be released at the same time.
The linear motor to drive the focus lenses achieves high-precision, silent, and fast autofocus operation. In addition, the lens also now includes a new mechanism for fixing the linear motor position when turning the power off or playback, allowing the focus lens to be fixed.
The lens barrel is made with a magnesium alloy, ensuring both robust structural integrity and a light weight. Sealing has been applied to the lens in 18 different locations for dust and weather resistance and the ability to operate at temperatures of down to -10°C. A fluorine coating is also applied to the front lens element to repel water and dirt under tough outdoor situations.
Fujifilm is simultaneously launching the 1.4x teleconverter (GF1.4X TC WR) which allows for telephoto shooting at a focal length of 350mm (approximately 277mm in 35mm format equivalent) while maintaining superior image quality. The maximum aperture is reduced by one F stop. As both the lens and the teleconverter are high quality, there’s hardly any deterioration in MTF when the teleconverter is attached.
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