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Samyang 300mm f/6.3 Reflex UMC CS

Samyang 300mm f/6.3 Reflex UMC CS lens
Samyang 300mm f/6.3 Reflex UMC CS lensSamyang 300mm f/6.3 Reflex UMC CS lens
 

APS-C 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.

 

No Low Dispersion lens element is used

Low Dispersion lens elements help to reduce chromatic aberration.

 

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.

 

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.

 

Not Sealed

Weather sealed lenses are protected from dust and water. While they are not water proof, these lenses can be used in rain and other humid environments. Some sealings only provide protection against dust or water, not both. Sealing is only available when the lens is used on a similarly weather sealed camera body.

 

Supports drop-in filters

Drop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type.

Samyang 300mm f/6.3 Reflex UMC CS Specification

Available mount(s) Canon EF, Nikon F, Sony / Minolta A, FourThirds, Micro FourThirds, Sony E, Fujifilm X, Canon EF-M
Application(s) Wildlife
Category(s) Super telephoto
Multiplier 1.5×
Stabilizer no
Focal length 300 mm (prime)
Lens construction 8 elements in 8 groups
Angle of view 35mm: N/A
digital: 5.5°
Number of blades N/A
Maximum aperture f/6.3
Minimum aperture f/6.3
Minimum focusing distance 110 cm
Magnification N/A
Filter size N/A
Size ∅ 65 × 74 mm
Weight 260 g
Notes Rear-mounted 25.5mm filters, manual focus lens.
AF speed N/A
AF sound
Internal focusing N/A
Internal zoom N/A
Fix front lens yes
Mount type metal
Weather sealed no
Drop in filter yes
Ultrasonic AF N/A
Stepping motor AF no
APS-C sized circle yes
Low dispersion lens element no
Hard case N/A
Soft case N/A
Lens hood N/A
Tripod adapter N/A
Samyang 300mm f/6.3 Reflex UMC CS Specification

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