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
ADLinks to Amazon, B&H Photo, Adorama, KEH Camera, MPB, eBay are affiliate links. We may earn a commission if you buy through them, at no extra cost to you.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.
FE 400-800mm F6.3-8 G OSS in detailFE 400mm F2.8 GM OSS in detailAll E-mount lenses