Olympus 100-400 - first shots and impressions

Started Aug 27, 2020 | Photos thread
OP Astrotripper Veteran Member • Posts: 8,676
Aperture vs zoom
2

For those curious about aperture change while zooming:

  • f/5.0 - 100mm
  • f/5.6 - 140mm
  • f/6.0 - 210mm
  • f/6.3 - 330mm

So this is another big drawback compared to PanaLeica 100-400, which if I remember correctly is still f/5.6 at 300mm. So Panasonic starts 2/3 of a stop faster at the wide end and is still 1/3 of a stop faster near 300mm mark.

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Sigma DP2 Merrill Olympus PEN E-PL1 Panasonic Lumix DMC-GM5 Olympus E-M1 II OM-1 +15 more
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