Carl Zeiss Loxia 50mm f/2

	Full frame sized image Lenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either. No stepping motor AF Lenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses. Not stabilized Image stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule. Metal mount Cheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important. Internal Focusing Internally focusing lenses don't change their size while setting focus. The front lens is fixed The fixed front lens is not rotating during zoom and/or focusing. This allows the photographer to use petal shaped lens hood. Fixed front lenses also make the use of polarization filters a lot easier.

Carl Zeiss Loxia 50mm f/2 Specification

Carl Zeiss Loxia 50mm f/2 Specification
Available mount(s)	Sony / Minolta A
Application(s)	Portrait, Landscape, Architecture
Category(s)	Standard prime
Multiplier	1×
Stabilizer	no
Focal length	50 mm (prime)
Lens construction	6 elements in 4 groups
Angle of view	35mm: 47° digital: N/A
Number of blades	N/A
Maximum aperture	f/2
Minimum aperture	f/22
Minimum focusing distance	45 cm
Magnification	0.14×
Filter size	52 mm
Size	∅ 66.2 × 62.1 mm
Weight	320 g
Notes
AF speed	N/A
AF sound
Internal focusing	yes
Internal zoom	N/A
Fix front lens	yes
Mount type	metal
Weather sealed	N/A
Drop in filter	N/A
Ultrasonic AF	N/A
Stepping motor AF	no
APS-C sized circle	no
Low dispersion lens element	N/A
Hard case	N/A
Soft case	N/A
Lens hood	N/A
Tripod adapter	N/A

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