Comparison of Sony 300mm f/2.8 G SSM II SAL300F28G2 and Sony FE 400mm f/2.8 GM OSS SEL400F28GM [S]ave
| Attribute |  Sony FE 400mm f/2.8 GM OSS SEL400F28GM × |  Sony 300mm f/2.8 G SSM II SAL300F28G2 × |
|---|---|---|
| Filter Size (mm) | 5 | 42 |
| Notes | Optical SteadyShot Image Stabilization; Dust and moisture resistant | Thanks to a new LSI drive circuit, the SAL-300F28GII offers faster, more accurate autofocusing with four times faster object tracking performance tha |
| Closest Focus (m) | 2.7 | 2 |
| Magnification Ratio (x) | 0.16 | 0.18 |
| Type | Telephoto Prime | Telephoto Prime |
| Length (mm) | 359 | 242.5 |
| APS Equivalent | 600mm | 450mm |
| Diagonal Angle of View (degree) | 6.20 | 8.20 |
| Image Circle | 35mm (Full-frame E-Mount) | 35mm |
| Focal Length (mm) | 400.00 | 300.00 |
| Brand | Sony | Sony |
| Name | Sony FE 400mm f/2.8 GM OSS SEL400F28GM | Sony 300mm f/2.8 G SSM II SAL300F28G2 |
| Weight (g) | 2895 | 2340 |
| Aperture (f) | 2.80 - 22.00 | 2.80 - 32.00 |
| Diaphragm Blades | 11 | 9 |
| Diaphragm Blades Type | circular | rounded |
| Lens Construction | 23 elements in 17 groups, including 1 ED and 3 Fluorite elements; Fluorine coating | 13 elements in 12 groups, including 3 ED elements |
| Diameter (mm) | 158.1 | 122 |
| Focus Details | Internal focus via dual XD (eXtreme Dynamic) Linear Motors | Internal; SSM (Super Sonic wave Motor) with Direct Manual Focus (2 modes), Focus Hold button, Focus Range selector, Prefocus function |
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