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Pentax DA 18-50mm F4.5-5.6 DC WR RE vs Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF
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Pentax DA 18-50mm F4.5-5.6 DC WR RE

Standard Zoom | Pentax KAF3

Pentax DA 18-50mm F4.5-5.6 DC WR RE
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Tamron 17-50mm f2.8 XR II LD

Standard Zoom | Pentax KAF

Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF
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Reasons to choose Pentax DA 18-50mm F4.5-5.6 DC WR RE over Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF
Max Magnification 0.23x vs 0.22x better close-up
Weight 158 g vs 430 g 272 g lighter
Diameter 41 mm vs 74 mm 33 mm smaller in diameter
Length 71 mm vs 82 mm 11 mm shorter
Filter Thread 58 mm vs 67 mm Smaller filters are cheaper
Reasons to choose Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF over Pentax DA 18-50mm F4.5-5.6 DC WR RE
Focal Length - Wide 17mm vs 18mm 1mm wider coverage
Optical Zoom 2.90x vs 2.80x more flexible coverage
Max Aperture - Wide 2.8 vs 4 faster lens at wide
Pentax DA 18-50mm F4.5-5.6 DC WR RE vs Tamron 17-50mm f2.8 XR II LD Specs Table
Detailed comparison of specifications
General Pentax DA 18-50mm F4.5-5.6 DC WR RE Tamron 17-50mm f2.8 XR II LD
Brand Pentax Tamron
Lens Type Zoom Zoom
Price CHECK PRICE CHECK PRICE
Lens Type Standard Zoom Standard Zoom
Lens Mount Pentax KAF3 Pentax KAF
Max Format APS-C / DX APS-C / DX
Focal Range 18-50mm 17-50mm
Image Stabilization No No
Colour Black, white Black, white
Zoom Method Rotary (extending) Rotary (extending)
Power Zoom No -
Zoom Lock No Yes
Zoom Ratio 2.8X 2.9X
Aperture
Max Aperture F4.0 - F5.6 F2.8
Min Aperture F22.0 - F32.0 F32.0
Aperture Ring No No
Diaphragm Blades 7 7
Optics
Optical Elements 11 16
Optical Groups 8 13
Special Elements HD, SP coatings 2 hybrid aspherical elements 1 LD (Low Dispersion) glass element 1 XR (Extra Refractive) element
Focusing
Min Focus Distance 0.3m 0.27m
Max Magnification 0.23X 0.22X
Autofocus Yes Yes
AF Motor Type Micromotor Micromotor
Full Time Manual No
Focus Method Extending front Internal
Distance Scale No Yes
DoF Scale No Yes
Distance Scale No Yes
Focus Distance Limiter Unknown Unknown
Physical Specs
Weight 158g 430g
Diameter 41mm 74mm
Length 71mm 82mm
Materials Unknown Unknown
Weather Sealing Yes Unknown
Filter Thread 58mm 67mm
Filter Notes - -
Hood Supplied Yes Yes
Hood Code Unknown flower shaped hood
Tripod Collar No No
Optional Accessories - -
Report Report
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