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Tamron AF 28-75mm F2.8 XR Di LD Aspherical IF vs Sigma 24-70mm F2.8 EX DG Macro
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Tamron AF 28-75mm f2.8 XR LD

Standard Zoom | Pentax KAF

Tamron AF 28-75mm F2.8 XR Di LD Aspherical IF
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Sigma 24-70mm F2.8 EX DG

Standard Zoom | Pentax KAF

Sigma 24-70mm F2.8 EX DG Macro
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BUY from B&H PHOTO
Reasons to choose Tamron AF 28-75mm F2.8 XR Di LD Aspherical IF over Sigma 24-70mm F2.8 EX DG Macro
Focal Length - Tele 75mm vs 70mm 5mm more tele coverage
Weight 510 g vs 715 g 205 g lighter
Diameter 73 mm vs 89 mm 16 mm smaller in diameter
Length 92 mm vs 116 mm 24 mm shorter
Filter Thread 67 mm vs 82 mm Smaller filters are cheaper
Reasons to choose Sigma 24-70mm F2.8 EX DG Macro over Tamron AF 28-75mm F2.8 XR Di LD Aspherical IF
Focal Length - Wide 24mm vs 28mm 4mm wider coverage
Optical Zoom 2.90x vs 2.70x more flexible coverage
Diaphragm Blades 9 vs 7 better Bokeh
Tamron AF 28-75mm f2.8 XR LD vs Sigma 24-70mm F2.8 EX DG Specs Table
Detailed comparison of specifications
General Tamron AF 28-75mm f2.8 XR LD Sigma 24-70mm F2.8 EX DG
Brand Tamron Sigma
Lens Type Zoom Zoom
Price CHECK PRICE CHECK PRICE
Lens Type Standard Zoom Standard Zoom
Lens Mount Pentax KAF Pentax KAF
Max Format 35mm FF 35mm FF
Focal Range 28-75mm 24-70mm
Image Stabilization No No
Colour Black Unknown
Zoom Method Rotary (extending) Rotary (extending)
Power Zoom - -
Zoom Lock Yes -
Zoom Ratio 2.7X 2.9X
Aperture
Max Aperture F2.8 F2.8
Min Aperture F32.0 F32.0
Aperture Ring Yes No
Diaphragm Blades 7 9
Optics
Optical Elements 16 14
Optical Groups 14 13
Special Elements 3 LD elements, 4 aspherical elements and 2 XR elements 2 Special Low Dispersion (SLD) glass elements 3 aspherical elements
Focusing
Min Focus Distance 0.33m 0.4m
Max Magnification unknown 0.26X
Autofocus Yes Yes
AF Motor Type Micromotor Micromotor
Full Time Manual No No
Focus Method Internal Internal
Distance Scale Yes Yes
DoF Scale Yes Yes
Distance Scale Yes Yes
Focus Distance Limiter Unknown Unknown
Physical Specs
Weight 510g 715g
Diameter 73mm 89mm
Length 92mm 116mm
Materials Unknown Unknown
Weather Sealing Unknown No
Filter Thread 67mm 82mm
Filter Notes non rotating -
Hood Supplied Yes Yes
Hood Code flower shaped hood Unknown
Tripod Collar No No
Optional Accessories - -
Report Report
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