Lens HD PENTAX-D FA 15-30mmF2.8ED SDM WR 131 photo by Staff R An image of autumn captured with the PENTAX K-1 test model Comment The PENTAX K-1 expressed a wide perspective of a 15mm lens more effectively than previous PENTAX digital SLR cameras.. Aperture F8.0 Shutter speed 1/60 ISO sensitivity 200 White balance AUTO WB Focal length 15mm Exposure compensation +1.7 Crop mode FF Custom image Bright Digital filter None Lens correction ON Photo retouch None Share Share