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Pentax smc A 400mm f/5.6

Pentax smc A 400mm f/5.6 lens

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 Ultrasonic AF

Lenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses.


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.


No drop-in filter support

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.

The PENTAX smc P-A* 400mm F5.6 telephoto lens is a manual focus lens with automatic aperture. It is an excellent general-use lens ideal for sports and wildlife photography. Like all PENTAX lenses, it is treated with the acclaimed smc coating for maximum light transmission, sharp definition, and high contrast while minimizing flare and ghost imaging.

Pentax smc A 400mm f/5.6 Specification

Available mount(s) Pentax K
Application(s) Wildlife
Category(s) Super telephoto
Stabilizer no
Focal length 400 mm (prime)
Lens construction 7 elements in 6 groups
Angle of view 35mm: 6.2°
digital: N/A
Number of blades N/A
Maximum aperture f/5.6
Minimum aperture f/45
Minimum focusing distance 275 cm
Magnification N/A
Filter size 77 mm
Size ∅ 84 × 277 mm
Weight 1240 g
Notes built-in hood
AF speed N/A
AF sound
Internal focusing N/A
Internal zoom N/A
Fix front lens N/A
Mount type N/A
Weather sealed N/A
Drop in filter no
Ultrasonic AF no
Stepping motor AF no
APS-C sized circle no
Low dispersion lens element no
Hard case N/A
Soft case N/A
Lens hood N/A
Tripod adapter N/A
Discontinued yes
Pentax smc A 400mm f/5.6 Specification

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