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Sigma 18-300 F3.5-6.3 DC Macro OS HSM Pentax KAF3 Review
Sigma 18-300 F3.5-6.3 DC Macro OS HSM

Main Features

  • 18-300mm Focal Range
  • F3.5 - F6.3 Max Aperture
  • Image Stabilization
  • Filter Thread: 72mm
  • Max Format: APS-C / DX
  • Pentax KAF3 Mount
  • Weight: 585g.
  • Diameter: mm
  • Length: mm
  • Min Focus Distance:0.39m
  • Max Magnification:3x
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Sigma 18-300 F3.5-6.3 DC OS HSM Overview
Sigma 18-300 F3.5-6.3 DC OS HSM is an Auto Focus (AF) SuperZoom lens with APS-C / DX max sensor coverage and it is designed to be used with Pentax KAF3 mount cameras.

Lens Mount

Sigma 18-300 F3.5-6.3 DC OS HSM is compatible with cameras that have Pentax KAF3 lens mount.Some of the latest released cameras with Pentax KAF3 lens mount are Pentax KP, Pentax K-70 and Pentax K-3 II.

Sensor Coverage

Max sensor coverage of Sigma 18-300 F3.5-6.3 DC OS HSM is APS-C / DX.

Focal Range

Sigma 18-300 F3.5-6.3 DC OS HSM has a focal range of 18-300mm and 16.7X zoom ratio. When mounted on a APS-C / DX format camera, it provides an 35mm (FF) equivalent of 27 - 450mm.

Optical Image Stabilization

Sigma 18-300 F3.5-6.3 DC OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.

Body Colour

Black

Zoom Method

Rotary (extending)

Zoom Lock

Sigma 18-300 F3.5-6.3 DC OS HSM has a Zoom lock feature which eliminates Zoom creep where focal length of the lens changes with gravity when it's held downwards or upwards.

Aperture

Sigma 18-300 F3.5-6.3 DC OS HSM has a max aperture of f3.5 at 18mm and max aperture of f6.3 at 300mm .
Pros and Cons of Sigma 18-300 F3.5-6.3 DC Macro OS HSM

PROs
Image Stabilization
Built-in Autofocus
Hood supplied
Full-time Manual Focusing
Zoom Lock
Versatile Lens with a Zoom Ratio of 16

CONs
No Weather Sealing
Lens Extents while focusing
Slow Aperture at Tele end
Variable Aperture
Sigma 18-300 F3.5-6.3 DC OS HSM Detailed Specifications

General
Brand Sigma
Lens Type Zoom
Lens Type SuperZoom
Lens Mount Pentax KAF3
Max Format APS-C / DX
Focal Range 18-300mm
Image Stabilization Yes
Colour Black
Zoom Method Rotary (extending)
Power Zoom No
Zoom Lock Yes
Zoom Ratio 16.7X
APERTURE
Max Aperture F3.5 - F6.3
Min Aperture
Aperture Ring No
Diaphragm Blades unknown
Optics
Special Elements 4 "F" low dispersion, 1 special low dispersion

FOCUSING
Min Focus Distance 0.39m
Max Magnification 3X
Autofocus Yes
AF Motor Type Ultrasonic
Full Time Manual Yes
Focus Method Extending front
Focus Distance Limiter No
Distance Scale Yes
DoF Scale No
PHYSICAL SPECS
Weight 585g
Diameter Unknown
Length Unknown
Weather Sealing No
Filter Thread 72mm
Filter Notes -
Hood Supplied Yes
Tripod Collar No
Optional Accessories AM72-01 macro lens (increases magnification to 2X)
Sigma 18-300 F3.5-6.3 DC Macro OS HSM Alternatives in Pentax KAF3 Mount
Model Coverage Weight Focusing Street Price
Pentax smc DA 18-250mm F3.5-6.3 Lens Pentax smc DA 18-250mm F3.5-6.3
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APS-C / DX 455gr AF Amazon B&H Photo
Pentax smc DA 18-270mm F3.5-6.3 ED SDM Lens Pentax smc DA 18-270mm F3.5-6.3 ED SDM
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APS-C / DX 453gr AF Amazon B&H Photo
Samsung D-Xenon 18-250mm F3.5-6.3 Lens Samsung D-Xenon 18-250mm F3.5-6.3
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APS-C / DX 455gr AF Amazon B&H Photo
Sigma 18-250mm F3.5-6.3 DC Macro OS HSM Lens Sigma 18-250mm F3.5-6.3 DC Macro OS HSM
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APS-C / DX 470gr AF Amazon B&H Photo
Sigma 18-250mm F3.5-6.3 DC OS HSM Lens Sigma 18-250mm F3.5-6.3 DC OS HSM
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APS-C / DX 628gr AF Amazon B&H Photo
Tamron AF 18-250mm F3.5-6.3 Di II LD Aspherical IF Macro Lens Tamron AF 18-250mm F3.5-6.3 Di II LD Aspherical IF Macro
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APS-C / DX 430gr AF Amazon B&H Photo
Frequently Asked Questions about Sigma 18-300 F3.5-6.3 DC Macro OS HSM
is the Sigma 18-300 F3.5-6.3 DC Macro OS HSM a Weather Sealed lens?
What is the Minimum Focusing Distance of Sigma 18-300 F3.5-6.3 DC Macro OS HSM
is the Sigma 18-300 F3.5-6.3 DC Macro OS HSM an Autofocus (AF) lens?
What is the Filter Thread Size of Sigma 18-300 F3.5-6.3 DC Macro OS HSM
Does Sigma 18-300 F3.5-6.3 DC Macro OS HSM have Image Stabilization?
Does Sigma 18-300 F3.5-6.3 DC Macro OS HSM have Aperture Ring?
What is the Maximum Magnification Ratio of Sigma 18-300 F3.5-6.3 DC Macro OS HSM
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