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Sony FE 100-400mm F4.5-5.6 GM OSS vs F5.6-8 OSS

Both are Sony E telephoto zoom lenses for full frame. Here is what actually differs.

Pick the F4.5-5.6 GM OSS if

  • You need ⅔ stop more light for low light or background blur (f/4.5 vs f/5.6)
  • You shoot close-ups: it focuses down to 0.98 m vs 1.13 m

Pick the F5.6-8 OSS if

  • You want the lighter lens to carry: 744 g lighter (654 g vs 1398 g)
  • You want bigger close-ups: 0.41× vs 0.35× maximum magnification
  • You want a compact lens: 164.5 mm vs 205 mm long
  • You prefer a newer design: released 2026 vs 2017

Spec differences

8 differences
Specifications that differ between the Sony FE 100-400mm F4.5-5.6 GM OSS and the Sony FE 100-400mm F5.6-8 OSS
F4.5-5.6 GM OSS F5.6-8 OSS
Max aperture
f/4.5 ⅔ stop faster
f/5.6
Weight
1398 g
654 g lighter
Length
205 mm
164.5 mm shorter
Diameter
93.9 mm
78.2 mm slimmer
Filter thread
77 mm
67 mm
Min focus distance
0.98 m closer
1.13 m
Max magnification
0.35×
0.41× larger
Released
2017
2026
6 identical specs hidden: brand, mount, type, format, focal length, image stabilization. Show all
Brand
Sony both
Mount
Sony E both
Type
Telephoto Zoom both
Format
Full frame both
Focal length
100-400mm both
Image stabilization
Yes both

More comparisons

Compare other lenses or browse our best-of guides.