Panny 25mm 1.4 vs Olympus 25mm 1.8 Reviewed

Started Feb 15, 2014 | Discussions thread
Ido S
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T-stops
In reply to dgrogers, Feb 16, 2014

The difference in required shutter speeds for any given aperture is caused by the T-stops of the lens. That's the amount of light that actually manages to hit the sensor, whereas F-stops represent the amount of light that goes through the aperture diaphragm. We'll have to wait on a scientific confirmation, from the folks at DxO Labs (who are in charge of the famous, and infamous, DxOMark), as well as SLR Gear, etc.

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Olympus OM-D E-M5 Olympus M.Zuiko Digital ED 9-18mm 1:4.0-5.6 Olympus M.Zuiko Digital ED 12-50mm 1:3.5-6.3 EZ Olympus M.Zuiko ED 75-300mm 1:4.8-6.7 II Olympus M.Zuiko Digital 25mm F1.8 +4 more
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