When mounted on a PENTAX K-mount ILC camera body, the PENTAX-DA 50mm f/F1.8 lens delivers a focal length of 50mm or 76.5mm in the 35mm format. The lens f/1.8 maximum aperture and round diaphragm blades enable it to produce a natural “bokeh” (out-of-focus) effect, which gives the blurry elements in an image a softer, rounded and more pleasing appearance. Additionally, the f/1.8 aperture makes it possible to increase camera shutter speed when photographing in poorly lit conditions, which minimizes camera shake and helps eliminate blur.
Technical data |
Format compatibility | Pentax crop frame DSLRs |
Lens mount | Pentax KAF |
Zoom / fix | Prime lens |
Lens type | Normal |
Special designs | Portrait lens |
Focal length | 50 mm |
Focal length (35mm camera equivalent) | 76.5 mm |
Maximum aperture | f/1.8 |
Minimum aperture | f/22 |
Optical construction | 6 elements in 5 groups |
Focusing | Manual focus / Autofocus |
AF motor | Screw drive |
Full mechanical manual focus override | No |
Image stabiliser | None |
Minimum focus distance | 45 cm |
No. of diaphragm blades | 7 |
Maximum reproduction ratio | 0.15× |
General |
Diameter | 63 mm |
Length | 38.5 mm |
Weight | 122 g |
Filter thread | 52 mm |
Package contents | Lens / Front lens cap / Rear lens cap |