Sigma
18-125mm f/3.8-5.6 DC OS HSM Canon-ef
 vs
Sigma
17-70mm f/2.8-4 DC Macro OS HSM Canon-ef

vs

differences

Reasons to consider the Sigma 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
More zoom 6.9x vs 4.1x
Help
 Around 70% more zoom, giving you more flexibility for photos
Better telephoto 125 mm vs 70 mm
Help
 Around 80% more reach, less perspective distortion
Sigma 18-125mm f/3.8-5.6 DC OS HSM Canon-ef Learn more about
the Sigma 18-125mm f/3.8-5.6 DC OS HSM Canon-ef

Reasons to consider the Sigma 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Wider aperture f/2.8 vs f/3.8
Help
 At its widest, the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef captures slightly more light, 0.9 f-stops
Sigma 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef Learn more about
the Sigma 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef

similarities

Compared to lenses

Common Strengths Common Weaknesses
Focus motor Silent focus motor Help
Silent and fast
Image stabilization Good image stabilization Help
Sigma OS
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses
Fixed aperture Both are variable aperture lenses Help
Narrower aperture at longer focal lengths

Compared to landscape lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.

LensHero is not aware of any interesting weaknesses shared by these two products.

competitors

Shared Competitors

Advantages

Disadvantages
Canon EF-S 15-85mm f/3.5-5.6 IS USM

Canon EF-S 15-85mm f/3.5-5.6 IS USM

Travel lens

$699
Image stabilization Has better image stabilization
Aperture Has a narrower aperture
Compare the EF-S 15-85mm f/3.5-5.6 IS USM vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the EF-S 15-85mm f/3.5-5.6 IS USM vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Canon EF-S 18-55mm f/3.5-5.6 IS

Canon EF-S 18-55mm f/3.5-5.6 IS

Wide angle lens

$185 - $199
Image stabilization Has better image stabilization
Aperture Has a narrower aperture
Focus motor Lacks a silent focus motor
Compare the EF-S 18-55mm f/3.5-5.6 IS vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the EF-S 18-55mm f/3.5-5.6 IS vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Canon EF-S 18-135mm f/3.5-5.6 IS

Canon EF-S 18-135mm f/3.5-5.6 IS

Travel lens

$499 - $549
Image stabilization Has better image stabilization
Aperture Has a narrower aperture
Focus motor Lacks a silent focus motor
Compare the EF-S 18-135mm f/3.5-5.6 IS vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the EF-S 18-135mm f/3.5-5.6 IS vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Sigma 18-250mm f/3.5-6.3 DC OS HSM Nikon-f

Sigma 18-250mm f/3.5-6.3 DC OS HSM Nikon-f

Travel lens

$329
Max focal length Has a slightly shorter telephoto lens
Zoom range Has way more large zoom range
Aperture Has a narrower aperture
Compare the 18-250mm f/3.5-6.3 DC OS HSM Nikon-f vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the 18-250mm f/3.5-6.3 DC OS HSM Nikon-f vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Sigma 18-200mm f/3.5-6.3 DC OS Canon-ef

Sigma 18-200mm f/3.5-6.3 DC OS Canon-ef

Travel lens

$369
Max focal length Has a slightly shorter telephoto lens
Zoom range Has significantly large zoom range
Aperture Has a narrower aperture
Focus motor Lacks a silent focus motor
Compare the 18-200mm f/3.5-6.3 DC OS Canon-ef vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the 18-200mm f/3.5-6.3 DC OS Canon-ef vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Canon EF-S 17-85mm f/4-5.6 IS USM

Canon EF-S 17-85mm f/4-5.6 IS USM

Travel lens

$489
Wide maximum Has a higher max f/stop
Image stabilization Has better image stabilization
Aperture Has a narrower aperture
Compare the EF-S 17-85mm f/4-5.6 IS USM vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the EF-S 17-85mm f/4-5.6 IS USM vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Canon EF 24-105mm f/4L IS USM

Canon EF 24-105mm f/4L IS USM

Wide angle lens

$1,149
Image stabilization Has better image stabilization
Fixed aperture Has a fixed aperture
Aperture Has a narrower aperture
Compare the EF 24-105mm f/4L IS USM vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Compare the EF 24-105mm f/4L IS USM vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef

Sigma 18-125mm f/3.8-5.6 DC OS HSM Canon-ef Competitors

Advantages

Disadvantages
Sigma 18-50mm f/2.8 EX DC Macro

Sigma 18-50mm f/2.8 EX DC Macro

Portrait lens
Fixed aperture Has a consant aperture
Aperture Wider aperture
Focus motor Doesn't have a silent focus motor
Image stabilization No image stabilization
Compare the 18-50mm f/2.8 EX DC Macro vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef
Canon EF-S 18-200mm f/3.5-5.6 IS

Canon EF-S 18-200mm f/3.5-5.6 IS

Travel lens

$699
Zoom range Significantly more zoom
Image stabilization Better image stabilization
Focus motor Doesn't have a silent focus motor
Lowest price Slightly more expensive
Compare the EF-S 18-200mm f/3.5-5.6 IS vs the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef

Sigma 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef Competitors

Advantages

Disadvantages
Sigma 17-50mm f/2.8 EX DC OS HSM Canon-ef

Sigma 17-50mm f/2.8 EX DC OS HSM Canon-ef

Wide angle lens

$594
Fixed aperture Has a consant aperture
Zoom range Less zoom
Max focal length Slightly worse telephoto
Compare the 17-50mm f/2.8 EX DC OS HSM Canon-ef vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Canon EF-S 17-55mm f/2.8 IS USM

Canon EF-S 17-55mm f/2.8 IS USM

Wide angle lens

$1,059
Fixed aperture Has a consant aperture
Image stabilization Better image stabilization
Zoom range Slightly less zoom
Lowest price Slightly more expensive
Compare the EF-S 17-55mm f/2.8 IS USM vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Tamron 17-50mm f/2.8 XR Di II LD Canon-ef

Tamron 17-50mm f/2.8 XR Di II LD Canon-ef

Wide angle lens

$459
Fixed aperture Has a consant aperture
Focus motor Doesn't have a silent focus motor
Image stabilization No image stabilization
Compare the 17-50mm f/2.8 XR Di II LD Canon-ef vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Canon EF 28-135mm f/3.5-5.6 IS USM

Canon EF 28-135mm f/3.5-5.6 IS USM

Travel lens

$479
Image stabilization Better image stabilization
Max focal length Better telephoto
Aperture Narrower aperture
Min focal length Slightly worse wide angle
Compare the EF 28-135mm f/3.5-5.6 IS USM vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef
Tamron SP 17-50mm f/2.8 XR Di-II VC LD Canon-ef

Tamron SP 17-50mm f/2.8 XR Di-II VC LD Canon-ef

Wide angle lens

$499
Fixed aperture Has a consant aperture
Focus motor Doesn't have a silent focus motor
Zoom range Less zoom
Compare the SP 17-50mm f/2.8 XR Di-II VC LD Canon-ef vs the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef

discussion Which do you think is better?

Speech is free, but discussion at LensHero is moderated! Please discuss your opinion of these lenses here, and discuss feedback for LensHero at our support community.

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