4
lights and details in the small area covered by the focus point to work, or the success rate may become
poorer. In contrast, the bigger focus point setting may bring higher AF success rate. But accuracy may
decrease.
On cameras with PDAF, e.g., GFX100 and GFX100S, both AF
-
S and AF
-
C modes are supported. In
many circumstances, AF performance is similar to that of a DSLR. But if the camera doesn’t support
PDAF, e.g., GFX50S, GFX50R and GFX50S II, only AF
-
S mode is supported as CDAF is used instead of
PDAF. And AF performance is poorer. That is normal and not the malfunction of the adapter. In both
PDAF and CDAF modes, face/eye detection AF works.
We have tried our best to make EF lenses work better on G mount. But please understand that
different lens and camera system will never collaborate like a native system. Sometimes even lenses
optimized may encounter AF issues. You may try to improve its accuracy by half pressing shutter
release button
more than once
before releasing the shutter. Or you may try AF
-
C instead of AF
-
S
mode (on GFX100 and GFX100S only). If necessary, please change to the MF mode.
When you want to use MF mode, please set AF/MF switch on the lens to the MF position. The
camera will be set to the MF mode automatically.
Most of lenses that are not on the tested and optimized lens list should work normally. But since
PDAF isn’t supported and CDAF performs poorer, you may encounter slow and inaccurate AF.
Sometimes MF would be the only choice. Or you may wait for the lens to be added to the list by future
firmware updates.
3.5 Lens built
-
in IS and camera IBIS functions
This product supports both lens IS (or OS, VC) and IBIS functions. But they don’t work at the same
time. You may choose between them. When the camera is powered on or entering the shooting mode
from the playback mode, the IS switch on the lens decides which one is activated, lens IS or IBIS. “On”
status of the switch at that time enables lens IS and disables IBIS, and vice versa. IBIS will be
automatically enabled if the lens doesn’t have IS function at all. In most cases, IBIS works better than
lens IS unless the lens is a very long telephoto one.
Whatever lens IS or IBIS is chosen, the stabilization function is controlled by “IS MODE” menu item.
If it’s set to “Continuous” (Mode 1), IS functions are activated all the time. When it’s set to “Shooting
only” (Mode 2), lens IS function is enabled when the shutter release button being half
-
pressed and
disabled about 2 seconds after its release while IBIS function is only enabled during the exposure.
Because of the ages of some EF lenses, the old design may limit their ability of instant activation of IS
module. Thus, “Shooting only” mode may not work reliably for them. In that case, “Continuous” mode
is suggested.
Caution:
To make IBIS works properly, please turn off focus bracketing support in SETTINGS.INI
