DA 12-24mm vs Sigma and Tamron 10-24mm Comparison

Lens Specifications

All three ultra-wide zoom lenses, the Pentax DA 12-24mm f/4, the Sigma DG 12-24 f/4.5-5.6, and the Tamron SP AF 10-24mm f/3.5-4.5 DI II, are well built and have similar characteristics. The lenses are rectilinear as opposed to being fish-eye lenses.

For the most part they have comparable dimensions and weight, although the Sigma is slightly heavier than the Pentax and the Tamron. The side-by-side specification of each lens, seen below, highlights the differences between the lenses. The green cells emphasize the areas where lens excels and the red cells indicate where the lens could be improved.

 

Pentax 12-24mm

Sigma 12-24mm

Tamron 10-24mm

Groups/Element

11/13 12/16 9/12

Special Elements

1 Extra-low-dispersion (ED), and 2 aspherical glass elements 4 Super-Low Dispersion (SLD), and 3 aspherical  glass elements 2 Low Dispersion (LD), 1 High-refractive Index (HID), and 4 aspherical glass elements 
Image Format APS-C (16 x 24mm) Full-frame (24 x 36mm) APS-C (16 x 24mm)
Angle of View 99-61 degrees

99-61 degrees (APS-C)

122-84.1 degrees (Full-frame)

108.44-60.20 degree

Minimum Focusing Distance

12 inches (30cm) 11 inches (28cm) 9.48 inches (24cm)

Autofocusing Type

Slotted Screw-drive Slotted Screw-drive Slotted Screw-drive

Filter Diameter (Front)

77mm N/A 77mm

Maximum Aperture

F4 F4.5-5.6 F3.5-4.5

Minimum Aperture

F22 F22 F22-32

Diaphragm Blades

8 6 7

Zoom Rotation

Counterclockwise Counterclockwise Counterclockwise

Focus Rotation

Counterclockwise Clockwise Counterclockwise

Weather Sealing

No No No

Full-time Manual

Yes (Quick-Shift Focus System) No No

Distance/ Depth of Field Scales

No Yes No

Dimensions

3.3” x 3.4” (83.5 x 87.5mm) 3.4” x 4.0” (87.5 x 102.5mm) 3.4” x3.28” (86.5 x 83.2mm)

Weight

15.2 oz. (430g) 21.7 oz. (615g) 14.3 oz. (406g)

Accessories

Hood Case,adaptor ring, guide plate Hood


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