On Sharpness, ISO and Shutter Speed

Started Nov 29, 2013 | Discussions thread
Anders W Forum Pro • Posts: 21,468
Re: On Sharpness, ISO and Shutter Speed

exdeejjjaaaa wrote:

Ken Strain wrote:

These data are puzzling, two features disturb me most:

simple - heavy gear w/o any IS performs the best as expected, lighter gear w/o IS performs worse and lighter gear w/ IS performs worse than anything w/ the most pronounced shutter shock on a camera (E-M1) with the fastest (=more energy) shutter blades of all light+IS gear combos...

Not as simple as you think.

1. Why would a heavier FF camera show less blur due to shutter shock than a lighter MFT camera? Note that when considering the weights involved you need to consider not only the weight of the camera bodies but also the weight of the moving parts within the bodies?

2. Why would the weight of the camera body itself matter much at all if the camera is securely fastened to a far heavier studio tripod?

3. All but one of the MFT camera for which samples from the new DPR studio scene are available show blur in the critical range of shutter speeds. What sets the one case (GM1) apart from the others is that it has an electronic first curtain shutter whereas the others do not. The cameras that show blur in the critical range of shutter speeds include cameras with an IS system (E-M1, E-M5, E-PL5, E-P5) as well as cameras without (G6, GF6, GX7). Consequently, the data we are talking about suggests that it is the type of shutter rather than the stabilization system that matters.

 Anders W's gear list:Anders W's gear list
Panasonic Lumix DMC-G1 Olympus OM-D E-M5 Olympus E-M1 Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G Vario 7-14mm F4 ASPH +28 more
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