One of the major advantage of Steesring GFX adapter over our competitors is lens parameters can be passed correctly to GFX camera, so
user will not feel confused in choosing exposure parameters and reviewing their pictures later. This information includes Lens type name,
lens capabilities, focal length range, aperture range, current focal length, and current aperture.
Some zooming lenses with variable max/open aperture ( for example, 70-300 f/4.5-5.6 ) may can’t display correct aperture range when
being zoomed, it’s an known issue, will be improved by lens parameter tuning through future firmware releases.
2.5
EF Lens AF/MF mode switch
FUJI lenses do not have MF/AF switch in it body, so AF/MF mode change is done through GFX camera body.
EF lenses MF/AF switch button can also put EF lens into MF mode by ignoring AF instruction from GFX camera. Usually GFX camera will
show AF prohibited sign on its LCD screen
MF mode or manually turn AF ring in AF mode will impact the accuracy of AF hunting. When you feel something wrong with AF, please
leave the AF ring untouched, turn of the camera power then turn it on to re-initialize the adapter’s AF algorithm. Put camera into picture
display/review mode, then turn into live view or shooting mode can also power cycle adapter for AF algorithm of adapter.
When powered on, adapter will try to drive the lens to the wide focal end whether AF/MF mode setting in EF lens body is AF or not, it
will cause no problem to Canon/Sigma lenses.
MF/AF mode switch in
lens body
has a side effect to eliminate some occasional AF drive wrong situation. For example, when you see
camera back led light is flashing for AF driving, but lens actually does not run at all. In this case, switch the lens MF/AF switch to MF mode
will make sure camera back led light stop flashing forever.
2.6
EF Lens Focus Zone Switch
It is suggested to turn the EF Lens focus zone switch to full range or to focus zone with infinity end enabled when power on GFX camera, this will
properly initialize adapter’s full range AF driving capability. When it is properly initialized, zone switch can be used to limit the AF hunting range,
and can switch to full range AF hunting with no problem.