The claim
Brand review
Sigma review, scored
Japan-built Sony E zoom; the US warranty page could not be read.
Tech Busy editorial team · Fact-checked · Updated
#4 of 14 brands in Cameras
From the Sigma 28-70mm F2.8 DG DN Contemporary Lens for Sony E review · calculated, not lab-tested
See all cameras- Overall 7.7
- Social 8.7
- Usability 6.7
Up next in Cameras
Sigma products
Products listed by Sigma. One has a published Tech Busy score.
How the score breaks down
From the review of Sigma 28-70mm F2.8 DG DN Contemporary Lens for Sony E · published features and owner comments · not a lab test.
From the review of Sigma 28-70mm F2.8 DG DN Contemporary Lens for Sony E · published features and owner comments · not a lab test.
- Overall7.7
- Social8.7
- Usability6.7
Usability6.7/10
Specs published10.0/10
Warranty and repairs7.0/10
Firmware and compatibility4.0/10
Price and extras6.0/10
Support and owner reports5.0/10
Social8.7/10
Independent web and YouTube8.2/10
Marketplace reviews9.2/10
RedditNot enough data
How each score was set
Usability 6.7 /10
From published features and owner comments · not a lab test.
- Specs published10.0/10
- All six printed: Sony E and L mounts, 28-70mm F2.8, stepping-motor autofocus, 470 g, 72.2 x 103.5 mm and a dust and splash resistant mount.
- Warranty and repairs7.0/10
- One-year limited warranty with a 3-year Sigma USA extension per The Digital Picture; Sigma's own US warranty page was not readable, so the terms are third-party.
- Firmware and compatibility4.0/10
- Two of five: a firmware download tab on the global product page and a mount list. The USB dock works on L-mount only, and no manual was read.
- Price and extras6.0/10
- Sigma USA lists it 'as low as $989', above the $899 launch price; a hood and caps are included and nothing else is required. Shipping terms were not read.
- Support and owner reports5.0/10
- Sigma USA has account pages and a dealer locator; contact channels and hours were not read. Reviewers cite the 28 mm end and close focus as the main owner gripes.
Social 8.7 /10
Average of the independent owner-review sources listed below.
- Independent web and YouTube8.2/10
- Product · 6 reviews · dpreview.com, pcmag.com, opticallimits.com, cameralabs.com, digitalcameraworld.com
- Marketplace reviews9.2/10
- Product · 695 reviews · amazon.com
- RedditNot enough data
- Searched; not enough owner reviews to score.
Strengths and drawbacks
Published specs and owner feedback, not a hands-on test.
Strengths
- Japan-built lenses with dust and splash resistant mounts
- Published firmware downloads and mount-conversion service
- Constant f/2.8 zooms under 500 g
Drawbacks
- USA warranty page was unreadable, so terms rest on third-party reports
- The USB dock works with L-mount only
- Prices on the US site start above the original launch price
Claims we checked
The published claim, then what we found. Live statuses. How we review
The claim
Made in Aizu, Japan
Questions
From Sigma’s published terms. Not legal advice.
Which Sigma lens is the pick for Sony E here?
This page uses the 28-70mm F2.8 DG DN Contemporary; Sigma publishes no sales ranking, so it is a compact flagship-class choice.
How long is the Sigma warranty?
The Digital Picture reports a 1-year limited warranty plus a 3-year Sigma USA extension; Sigma USA's own page could not be read.
Is the Sigma 28-70mm weather sealed?
Only the mount is dust and splash resistant, per Sigma and reviewers.
Can I update Sigma lens firmware?
The global product page has a firmware tab; the USB dock is sold for L-mount only.
More in Cameras
Brand scores out of 10 · See all cameras
TamronTamronValue zooms with a six-year US warranty and phone support.
Think TankWell-built outdoor camera pack with a lifetime warranty and a short return window.
ViltroxCheap, tiny autofocus primes; one-year warranty with customer-paid return shipping.
8.6
Think TankWell-built outdoor camera pack with a lifetime warranty and a short return window.7.8
SamyangSamyangLow-priced autofocus primes with firmware support; warranty not found.7.7
ViltroxCheap, tiny autofocus primes; one-year warranty with customer-paid return shipping.7.2
About Sigma
Sigma is a Japanese lens maker building Art, Contemporary and Sports lines at its Aizu factory, sold in Sony E, L-mount and other mounts through Sigma Corporation of America and dealers.