Sigma 45mm F2.8 DGvsSony E 18-135mm F3.5-5.6 OSS
45mm F2.8 DG
45mm / F2.8
—
E 18-135mm F3.5-5.6 OSS
18-135mm / F3.5-5.6
27-203mm equiv.
—
Which to choose
When the 45mm F2.8 DG suits you better
- Brightness0.6 stops brighter — better in low light and blurs the background more
- Weight90g lighter, so easier to carry
- Weather sealingHas weather sealing
When the E 18-135mm F3.5-5.6 OSS suits you better
- Zoom rangeCovers 18-135mm in a single lens
- StabilizationHas stabilization
These points are derived mechanically from the numbers. How a lens actually renders does not show up in specifications, so look at samples before deciding.
Size compared
- 45mm F2.8 DG48.2mm long × 64mm diameter
- E 18-135mm F3.5-5.6 OSS88mm long × 67.2mm diameter
Specifications compared
| Specification | Sigma 45mm F2.8 DG | Sony E 18-135mm F3.5-5.6 OSS | Difference |
|---|---|---|---|
| Focal length (wide) | 45mm | 18mm | +27mm |
| Focal length (tele) | 45mm | 135mm | −90mm |
| Max aperture (wide) | F2.8 | F3.5 | 0.6 stops brighter |
| Max aperture (tele) | F2.8 | F5.6 | 2.0 stops brighter |
| Min aperture | — | F22 | No data |
| Min focus distance | — | 45cm | No data |
| Max magnification | — | 0.29× | No data |
| Aperture blades | — | 7blades | No data |
| Weight | 235g | 325g | −90g |
| Length | 48.2mm | 88mm | −39.8mm |
| Diameter | 64mm | 67.2mm | −3.2mm |
| Filter size | 55mm | 55mm | — |
| Released | 2025 | 2018 | +7year |
| Stabilization | No | Yes | No |
| Weather sealing | Yes | No | Yes |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as 45mm F2.8 DG relative to E 18-135mm F3.5-5.6 OSS.The highlighted cell is the better side for that specification.
Check prices
45mm F2.8 DG
ADLinks to Amazon, MPB, Wex Photo Video, Park Cameras, eBay are affiliate links. We may earn a commission if you buy through them, at no extra cost to you.Links to London Camera Exchange are not affiliate links.Links marked “Search results” go to that retailer’s search page for this lens name.Check price and availability on the retailer’s own site.
E 18-135mm F3.5-5.6 OSS
ADLinks to Amazon, MPB, Wex Photo Video, Park Cameras, eBay are affiliate links. We may earn a commission if you buy through them, at no extra cost to you.Links to London Camera Exchange are not affiliate links.Links marked “Search results” go to that retailer’s search page for this lens name.Check price and availability on the retailer’s own site.
45mm F2.8 DG in detailE 18-135mm F3.5-5.6 OSS in detailAll E-mount lenses