On Sharpness, ISO and Shutter Speed

Started Nov 29, 2013 | Discussions thread
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Re: On Sharpness, ISO and Shutter Speed
In reply to Jack Hogan, Nov 29, 2013

Jack Hogan wrote:

Shutter Speeds Correspond to ISO 200-6400

For instance the dip in performance of the EM5 at base ISO. There have been suggestions that some cameras suffer from obvious shutter shock. Could this be it? Let's take a look at its younger brother, which reportedly shows the issue more clearly

Shutter Speeds correspond to ISO 100-6400

Whoa. Looking at the relative images in the comparometer confirms these results: below 1/320th the EM1's images are definitely blurrier. Shutter Shock, changed lighting, changed positions, changed hardware, misfocus, operator error? And what do we make of that vertical/horizontal crossover?

E-M1 has faster x-sync than E-M5 - so shutter blades impact (higher speed) affects suspended sensor more... as as result I use only manual (non TTL) flashes @ 1/400 xsync now, that allows me to move futher away out of shutter shock prone exposure speeds...

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