The Sigma 45mm f/2.8 DG DN Contemporary is a compact, lightweight, and versatile normal-length prime for . Key features include:
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Moderately fast f/2.8 aperture
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Advanced optical design
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Fast, smooth, and quiet autofocus
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Sony E-mount lens
Versatile Normal-Length Prime. The Sigma 45mm f/2.8 DG DN Contemporary’s compact build and versatile focal length make it ideal for a broad range of shooting situations, particularly those in which you want your subject to stand out. The fast f/2.8 aperture lets you shoot in low light while offering excellent focus control when using shallow depth-of-field techniques, while the rounded seven-blade diaphragm lets you render smooth bokeh. Using an APS-C camera? You’ll get a focal length equivalent to 68mm.
Stepping Autofocus Motor. The stepping motor provides fast, smooth, and nearly silent autofocus operation for stills and video alike. You also get full-time manual-focus override for precision adjustments.
Advanced Optics. This lens’s seven-group/eight-element optical design minimizes spherical aberrations and fringing to help produce soft, rounded bokeh while enhancing the three-dimensional appearance of your subject.
High-Quality Build. The Sigma 45mm’s Thermally Stable Composite build is dust- and splash-resistant, so that you can use it in adverse conditions. It also boasts a brass bayonet mount for maximum durability.
| Angle of View |
51.3° |
| Aperture Blades |
7, Rounded |
| Autofocus |
Autofocus |
| Brand |
Sigma |
| Compatibility |
Full Frame |
| Diameter |
2.5″ |
| Filter Size |
55.0mm |
| Focal Length |
45.0-45.0 |
| Groups/Elements |
7/8 |
| Hood Included |
Yes |
| Image Stabilization |
No |
| Item Type |
Lens |
| Length |
1.8″ |
| Lens Type |
Normal Range |
| Macro Reproduction Ratio |
1:4 |
| Max Aperture |
2.8 |
| Maximum Magnification |
0.25x |
| Minimum Aperture |
22.0 |
| Minimum Focusing Distance |
0.8feet |
| Mount |
Sony E |
| Weight |
0.5 lb. |















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