What else is happening before the first curtain on E-M1?

Started Mar 31, 2014 | Discussions thread
Anders W Forum Pro • Posts: 21,468
Re: Shutter video

Alien from Mars wrote:

radsaq wrote:

Here's a comparison of the sound of two 1/160s exposures in manual/MF with IS off. The EFCS is on top:

Looks like it's an additional 25ms of shutter lag?

Looks like it. 25ms after 1st curtain slams open so the shock is absorbed completely before exposure starts. What I don't understand - why do they still have to cycle 1st curtain close-open now?

Probably because the mechanical shutter is so constructed that it has to go through all four phases (first curtain closing - first curtain opening - second curtain closing - second curtain opening). It isn't designed to use the second curtain only, which would be the best solution when combined with EFCS.

Did you have "release lag time short" activated in this experiment?

And if not, could you please record the sounds with this setting active?

 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
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow