The Fujifilm Fujinon GF 23mm F4 R LM WR is a high-quality ultra-wide-angle lens for the Fujifilm GFX medium format system. It has been specially developed for the highest image quality in landscape, architecture and interior photography and is roughly equivalent to an 18mm lens in 35mm format.
The optical construction consists of 15 elements in 12 groups, including aspherical lenses as well as ED and Super ED glass. This combination significantly reduces distortions and chromatic aberrations and ensures very high sharpness right into the corners of the image.
The maximum aperture is f/4, which is typical for an ultra-wide angle in medium format and is designed for uniform imaging performance instead of extreme cropping. The aperture design with 9 blades creates a pleasantly soft bokeh for a wide-angle lens.
The autofocus is driven by a linear motor (LM) and works quickly, precisely and almost silently. An internal focusing mechanism is also built in, which means that the overall length does not change when focusing.
A key feature is the weather sealing (WR). The housing is protected against dust, moisture and cold, making it suitable for demanding outdoor use.
With a weight of around 845 g and a robust metal housing, the lens is not small, but still relatively compact for a medium format ultra-wide-angle lens.
Overall, the GF 23mm F4 is considered one of the most important wide-angle lenses in the GFX system and is particularly appreciated for its extremely high sharpness, low distortion and professional build quality.
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