Tamron AF 70-300mm F/4-5.6 Di LD Macro vs Sigma 24-105mm f/4 DG OS HSM Art

Both are Pentax K lenses. Here is what actually differs.

Tamron

AF 70-300mm F/4-5.6 Di LD Macro

f/4

Full specs

Sigma

24-105mm f/4 DG OS HSM Art

f/4885 gHSM

Full specs

Pick the Tamron AF 70-300mm F/4-5.6 Di LD Macro if

You need more reach: 300mm vs 105mm at the long end

Pick the Sigma 24-105mm f/4 DG OS HSM Art if

You want a wider view: 24mm vs 70mm at the wide end
You shoot handheld in dim light or video: it has optical image stabilization and the Tamron AF 70-300mm F/4-5.6 Di LD Macro does not
You shoot close-ups: it focuses down to 0.45 m vs 0.95 m

Spec differences

14 differences

Specifications that differ between the Tamron AF 70-300mm F/4-5.6 Di LD Macro and the Sigma 24-105mm f/4 DG OS HSM Art
	Tamron AF 70-300mm F/4-5.6 Di LD Macro	Sigma 24-105mm f/4 DG OS HSM Art
Brand	Tamron	Sigma
Type	Telephoto Zoom	Zoom
Format	not listed	Full frame
Focal length	70-300mm	24-105mm
Weight	not listed	885 g
Length	not listed	109.4 mm
Diameter	not listed	88.6 mm
Filter thread	62 mm	82 mm
Min focus distance	0.95 m	0.45 m closer
Max magnification	not listed	0.22×
Aperture blades	not listed	9
Optical design	not listed	19 elements / 14 groups
Autofocus motor	not listed	HSM
Image stabilization	No	Yes stabilized

2 identical specs hidden: mount, max aperture. Show all

Mount: Pentax K both
Max aperture: f/4 both

Our notes

Tamron AF 70-300mm F/4-5.6 Di LD Macro

The Tamron AF 70-300mm F/4-5.6 Di LD Macro is a full-frame telephoto zoom lens covering 70-300mm at f/4-5.6 for Pentax K mount cameras. The range suits sports, wildlife, events and portraits.

Our notes

Sigma 24-105mm f/4 DG OS HSM Art

Sigma 24-105mm f/4 DG OS HSM Art: a full-frame standard zoom lens with a 24-105mm focal length and a maximum aperture of f/4, made for Pentax K mount cameras, from the Sigma Art line with Optical Stabilizer and Hyper Sonic Motor autofocus. The range covers everything from wide...