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Close Examination of Fuji X-Series Lag Time

Started Nov 25, 2014 | User reviews thread
georgehudetz Veteran Member • Posts: 6,299
Re: Close Examination of Fuji X-Series Lag Time

scottyh56 wrote:

This is indeed a real issue and after trying out the 14mm on an X-E2 I have just been scratching my head about how Fuji could possibly allow it. As I stop down the delay clearly gets longer and longer and longer....

This is an observation AFTER the Dec 2014 firmware update.

The delay all but goes away at all apertures if I attach a Pentax manual focus lens via an adaptor.

It all points to the time taken to stop down the Fuji lenses. I presume that there is no way of operating a Fujinon lens in stopped down mode....

Every AF camera system will exhibit the behavior you describe, because they all focus with the lens wide-open, to get the maximum amount of light to the sensors, and then quickly stop down to your setting before activating the shutter.  The more you stop down, the more the blades have to move, so the longer it takes.

Adapted lenses that have no electrical connections do not exhibit this behavior because the camera body is not performing the AF task, and therefore the blades are not moving.

What the OP is specifically calling out is that there is something else (an extra lag) going on while in MF mode with Fuji lenses which is specifically related to the MF action performed by the shooter immediately prior to pressing the shutter button.

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