Smooth Bokeh | Fast Aperture | Classic Focal LengthThe Irix 45mm f/1.4 is a compelling alternative to 35 and 50mm focal lengths, thus providing a creative option for all fans of ""normal"" lens photography.Whether you're a professional photographer looking for the right lens for the job or an amateur looking to fill a gap in your focal lengths - the Irix 45mm F/1.4 is the lens for you!Focus LockThe Focus Lock feature allows you to lock the focus ring in a specific position. This is especially important for landscape photos and repetitive shooting as well as when you want to keep a specific distance from the subject (ie. In-studio or on the street).Focus RingDue to the excellent response from Irix shooters to the focus ring we designed for the Irix 150mm f/2.8 1:1 Macro lens, we incorporated a similar one in our Irix 45mm f/1.4 lens.