Sony FE 100-400mm F4.5-5.6 GM OSSvsSony FE 400-800mm F6.3-8 G OSS
FE 100-400mm F4.5-5.6 GM OSS
100-400mm / F4.5-5.6
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FE 400-800mm F6.3-8 G OSS
400-800mm / F6.3-8
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Which to choose
When the FE 100-400mm F4.5-5.6 GM OSS suits you better
- Brightness1.0 stops brighter — better in low light and blurs the background more
- Weight1080g lighter, so easier to carry
- Close focusFocuses as close as 98cm
- Zoom rangeCovers 100-400mm in a single lens
When the FE 400-800mm F6.3-8 G OSS suits you better
No standout advantage in this comparison.
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 100-400mm F4.5-5.6 GM OSS205mm long × 93.9mm diameter
- FE 400-800mm F6.3-8 G OSS346.8mm long × 119.8mm diameter
Specifications compared
| Specification | Sony FE 100-400mm F4.5-5.6 GM OSS | Sony FE 400-800mm F6.3-8 G OSS | Difference |
|---|---|---|---|
| Focal length (wide) | 100mm | 400mm | −300mm |
| Focal length (tele) | 400mm | 800mm | −400mm |
| Max aperture (wide) | F4.5 | F6.3 | 1.0 stops brighter |
| Max aperture (tele) | F5.6 | F8 | 1.0 stops brighter |
| Min aperture | F32 | F36 | −4.0 |
| Min focus distance | 98cm | 1.7m | −0.72m |
| Max magnification | 0.35× | 0.23× | +0.12x |
| Aperture blades | 9blades | 11blades | −2blades |
| Weight | 1.40kg | 2.48kg | −1080g |
| Length | 205mm | 346.8mm | −141.8mm |
| Diameter | 93.9mm | 119.8mm | −25.9mm |
| Filter size | 77mm | 105mm | −28mm |
| Released | 2017 | 2025 | −8year |
| Stabilization | Yes | Yes | — |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as FE 100-400mm F4.5-5.6 GM OSS relative to FE 400-800mm F6.3-8 G OSS.The highlighted cell is the better side for that specification.
Check prices
FE 100-400mm F4.5-5.6 GM OSS
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FE 400-800mm F6.3-8 G 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 100-400mm F4.5-5.6 GM OSS in detailFE 400-800mm F6.3-8 G OSS in detailAll E-mount lenses