The GF 250mm f/4 R LM OIS WR from FUJIFILM is a 197.5mm-equivalent lens for the G-mount GFX camera system. Offering a mixture of long reach and a relatively bright f/4 maximum aperture, this lens is well-suited to isolating subject matter and working with shallow depth-of-field techniques. In addition to its optical assets, this lens is also distinguished by its five-stop-effective image stabilization system that Minimizes the appearance of camera shake for sharper handheld imagery. It also features a linear autofocus motor that is both quick and quiet, and an internal focusing mechanism limits the overall lens length during use as well as maintains consistent image quality throughout the focusing range.  A relatively bright f/4 maximum aperture enables a high degree of control over the depth of field. A linear AF motor is used for quick, quiet focusing performance and an internal focusing mechanism maintains the overall length of the lens during operation and also produces consistent optical performance throughout the focusing range.  The optical Image Stabilization system compensates for up to five stops of camera shake to help realize sharper imagery when shooting handheld. The front element features a hydrophobic fluorine coating to repel moisture.