Portrait lenses are required to capture the images from the camera to the magnetic film or storage location depending on the kind of the camera. SAM lens stands for Smooth Autofocus Motor lens, which implies that the autofocus option is brought about by the motor movement.

Sony DT 50mm f/1.8 SAM (SAL-50F18) is a portrait lens that ensures high quality picture captures. It is one of the standard lenses. The lens mount is done on Minolta A. This type of portrait lens is suitable for sensor type APS-C found on Alpha series SLRs. This lens comes with a focal length of about 50 mm. The decimal 1.8 in the product number indicates the lens speed. It has a minimum aperture of 22 and maximum aperture of 1.

It is capable of focusing up to a minimum distance of about 34 cm. The weight of this lens alone is 170.0 grams. With such a high quality portrait lens as the Sony DT 50mm f/1.8 SAM (SAL-50F18), you can capture large portrait images with wonderful clarity. These lenses are best when used with Sony Alpha SLRs. This particular lens is Sony’s first DT lens that was released in the market. The lens is very compact and hence easy to handle too.

Lens construction includes 6 elements in 5 groups. SAM ensures better, quieter and faster focusing unlike the manual focusing which takes a lot of time and also cannot be done accurately. The Sony lens has about seven aperture blades that are circularly arranged. The filter size is about 49 mm.