Main trade-off
Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
Mount-only dust and splash construction. No stronger whole-lens weather claim is adopted.
Head-to-head
Sigma 28-70 vs Tamron 28-75 G2: Compact carry or closer craft work?
The short answer
Choose Sigma for the smaller everyday lens when its 28-70 mm range covers your photos. Choose Tamron when its stronger wide-end close-up is genuinely useful and you can work with about 4.4 cm front clearance. Sigma saves 70 g and 14.1 mm of listed length. Both use 67 mm filters and F2.8. Sigma’s dust and splash construction applies at the mount only, so do not treat it as a waterproof walking kit.
Before you choose
The reasoning and the trade-offs
A small bag can make the modest size difference the actual decision
Sigma is 14.1 mm shorter in its listed configuration and 70 g lighter. For a camera that shares a small bag with daily supplies, check the assembled camera with caps and hood, not just the detached lens. If Sigma fits without moving other essentials, its smaller body can matter more than Tamron’s extra 5 mm of reach. Both start at 28 mm, so neither solves a room-width problem the other creates. Bag fit is specific to the full setup, and no handling comfort is promised.
What this is based on
Shared daily bag plus same core shooting range crossed with exact mass and length. Packed size includes unmeasured accessories and camera.
Main trade-off
Tamron 28-75mm F2.8 G2 for Sony E
The strongest close-up leaves only about 4.4 cm front clearance. It is larger despite the similar everyday range.
Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
- Choose it for
- Keep the daily lens 70 g lighter and 14.1 mm shorter.
- Retain a constant F2.8 range and native 67 mm filters.
- Main trade-off
- Mount-only dust and splash construction. No stronger whole-lens weather claim is adopted.
Tamron 28-75mm F2.8 G2 for Sony E
- Choose it for
- Use 1:2.7 wide-end magnification for planned small-object photos.
- Reach 75 mm for a slightly tighter portrait from the same position.
- Main trade-off
- The strongest close-up leaves only about 4.4 cm front clearance. It is larger despite the similar everyday range.
About this comparison
Sigma 28-70 vs Tamron 28-75 G2 for a small daily bag, indoor pets and craft photos. Compare close-up clearance, weather limits and shared filters.
These compact third-party F2.8 normal zooms share 28 mm starts and 67 mm filters. A buyer seeking a lighter everyday Sony kit can realistically choose either, with a useful boundary around packed size and close-up method.
Winner by situation
Start with what you need it to do
Small everyday bag is the main constraint
Sigma is shorter and lighter.
- Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
- Better fit
- Tamron 28-75mm F2.8 G2 for Sony E
- Good
Planned close craft photos with controllable lighting
Tamron offers higher wide-end magnification with very short front clearance.
- Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
- Good
- Tamron 28-75mm F2.8 G2 for Sony E
- Better fit
Existing 67 mm filters
Both use the same native diameter.
- Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
- Good
- Tamron 28-75mm F2.8 G2 for Sony E
- Good
Assume either is a waterproof dog-walk kit
Neither establishes that claim.
- Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
- Caution
- Tamron 28-75mm F2.8 G2 for Sony E
- Caution
What matters in practice
The differences that matter
A small bag can make the modest size difference the actual decision
Sigma is 14.1 mm shorter in its listed configuration and 70 g lighter. For a camera that shares a small bag with daily supplies, check the assembled camera with caps and hood, not just the detached lens. If Sigma fits without moving other essentials, its smaller body can matter more than Tamron’s extra 5 mm of reach. Both start at 28 mm, so neither solves a room-width problem the other creates. Bag fit is specific to the full setup, and no handling comfort is promised.
How we reached this conclusion
Shared daily bag plus same core shooting range crossed with exact mass and length. Packed size includes unmeasured accessories and camera.
A craft seller gets more magnification only if the lighting still works
At the wide-end maxima, Tamron’s 1:2.7 gives roughly 22% more linear reproduction than Sigma’s 1:3.3. That can fill more of the frame with a small handmade item. Tamron also puts the lens front about 4.4 cm from the subject, so a desk lamp, reflection card or product arrangement may get in the way. Choose it when you can set up that close shot deliberately. The ratio does not measure sharpness, working distance equivalence or the number of usable product photos.
How we reached this conclusion
Small craft listings plus fixed home lighting crossed with reproduction ratios and Tamron front clearance. (3.3/2.7)-1 is about 22.2%, linear reproduction only.
The dog walk adds a weather question that the indoor pet photo does not
Both provide F2.8 for an indoor moving-pet setup, subject to the camera and shutter speed. A wet walk is a separate purchase constraint. Sigma limits its dust and splash construction to the mount, so broad descriptions of a sealed lens would overstate what is documented. Tamron’s general moisture-resistant construction is not a waterproof guarantee either. If wet-weather use is routine, plan protection for the camera, lens and open bag rather than treating either filter thread or a mount gasket as the whole solution.
How we reached this conclusion
Indoor pet movement plus wet outdoor walks crossed with shared aperture and mount-only Sigma construction. No comparative ingress rating or waterproofness invented.
Choice A
Sigma, 592965
Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
Keep the daily lens 70 g lighter and 14.1 mm shorter.
- Best matched use
- Keep the daily lens 70 g lighter and 14.1 mm shorter.
Checked facts
- Daily bag: 470 g, 103.5 mm long.
- Range and aperture: 28-70 mm F2.8.
- Wide close-up: 1:3.3, 0.19 m sensor distance.
- Accessory and exposure: 67 mm filter, mount-only splash construction.
Choice B
Tamron, AFA063S700
Tamron 28-75mm F2.8 G2 for Sony E
Use 1:2.7 wide-end magnification for planned small-object photos.
- Best matched use
- Use 1:2.7 wide-end magnification for planned small-object photos.
Checked facts
- Daily bag: 540 g, 117.6 mm long.
- Range and aperture: 28-75 mm F2.8.
- Wide close-up: 1:2.7, 0.18 m sensor distance and 4.4 cm front clearance.
- Accessory and exposure: 67 mm filter. No waterproof claim.
Meaningful differences
What changes the fit
| What changes | Sigma 28-70mm F2.8 DG DN Contemporary for Sony E | Tamron 28-75mm F2.8 G2 for Sony E | Why it matters |
|---|---|---|---|
| Daily bag | 470 g, 103.5 mm long. | 540 g, 117.6 mm long. | Sigma saves 70 g and 14.1 mm before hood and caps. |
| Range and aperture | 28-70 mm F2.8. | 28-75 mm F2.8. | The shared 28 mm start leaves the same basic small-room constraint. |
| Wide close-up | 1:3.3, 0.19 m sensor distance. | 1:2.7, 0.18 m sensor distance and 4.4 cm front clearance. | Tamron’s larger reproduction ratio comes with a very close physical position. |
| Accessory and exposure | 67 mm filter, mount-only splash construction. | 67 mm filter. No waterproof claim. | A shared filter does not protect either camera system from rain. |
What you give up
Every choice has a cost
If you choose Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
- The 1:3.3 wide-end maximum puts a small craft on less sensor area than Tamron’s 1:2.7. Cropping may be enough for a small listing image.
If you choose Tamron 28-75mm F2.8 G2 for Sony E
- The larger lens adds 14.1 mm of listed length inside the same bag. Measure it with the camera and caps before relying on the compact-zoom label.
Recommendation switch
The decision flips if...
The camera needs to fit the daily bag
Choose Sigma 28-70mm F2.8 DG DN Contemporary for Sony E. Sigma’s smaller body is the verified difference.
The close craft setup needs more reproduction
Choose Tamron 28-75mm F2.8 G2 for Sony E. Tamron’s larger wide-end ratio is useful with enough physical access.
What matters in practice
Before you choose
The stronger close-up lens asks for less space in front of the subject, while the smaller everyday lens saves space inside the bag.
What this comparison cannot tell you
- No matched optical or AF test.
- Magnification ratio is not a resolution score.
What the facts say
What the comparison shows
Useful conclusions from the current sony e-mount lenses comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Sigma 28-70mm F2.8 DG DN Contemporary for Sony E |
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| Tamron 28-75mm F2.8 G2 for Sony E |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Sigma 28-70mm F2.8 DG DN Contemporary for Sony E
Keep the daily lens 70 g lighter and 14.1 mm shorter.
Retain a constant F2.8 range and native 67 mm filters.
See price & reviews on AmazonTamron 28-75mm F2.8 G2 for Sony E
Use 1:2.7 wide-end magnification for planned small-object photos.
Reach 75 mm for a slightly tighter portrait from the same position.
See price & reviews on AmazonLinks open in a new tab.