Sony FE 400-800mm F6.3-8 G OSSvsSony FE 400mm F2.8 GM OSS
FE 400-800mm F6.3-8 G OSS
400-800mm / F6.3-8
—
FE 400mm F2.8 GM OSS
400mm / F2.8
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Which to choose
When the FE 400-800mm F6.3-8 G OSS suits you better
- Weight420g lighter, so easier to carry
- Close focusFocuses as close as 1.7m
- Zoom rangeCovers 400-800mm in a single lens
When the FE 400mm F2.8 GM OSS suits you better
- Brightness2.3 stops brighter — better in low light and blurs the background more
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
- FE 400-800mm F6.3-8 G OSS346.8mm long × 119.8mm diameter
- FE 400mm F2.8 GM OSS359mm long × 158.1mm diameter
Specifications compared
| Specification | Sony FE 400-800mm F6.3-8 G OSS | Sony FE 400mm F2.8 GM OSS | Difference |
|---|---|---|---|
| Focal length (wide) | 400mm | 400mm | — |
| Focal length (tele) | 800mm | 400mm | +400mm |
| Max aperture (wide) | F6.3 | F2.8 | 2.3 stops darker |
| Max aperture (tele) | F8 | F2.8 | 3.0 stops darker |
| Min aperture | F36 | F22 | +14.0 |
| Min focus distance | 1.7m | 2.7m | −1.00m |
| Max magnification | 0.23× | 0.16× | +0.07x |
| Aperture blades | 11blades | 11blades | — |
| Weight | 2.48kg | 2.90kg | −420g |
| Length | 346.8mm | 359mm | −12.2mm |
| Diameter | 119.8mm | 158.1mm | −38.3mm |
| Filter size | 105mm | 40.5mm | +64.5mm |
| Released | 2025 | 2018 | +7year |
| Stabilization | Yes | Yes | — |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as FE 400-800mm F6.3-8 G OSS relative to FE 400mm F2.8 GM OSS.The highlighted cell is the better side for that specification.
Check prices
FE 400-800mm F6.3-8 G OSS
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FE 400mm F2.8 GM OSS
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FE 400-800mm F6.3-8 G OSS in detailFE 400mm F2.8 GM OSS in detailAll E-mount lenses