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A2 F-MOUNT ADAPTER
A2.1 PCO F-MOUNT ADAPTER
This is the F-mount adapter from PCO.
If you have got a lens with automatic
diaphragm, this adapter allows you to easily
adjust the aperture by turning the aperture
ring on the adapter.
F-mount lenses
without an automatic
diaphragm can be
adapted to the
camera’s lens mount
but the aperture
cannot be set.
Adjust back focal length
In case you need to adjust the flange focal
distance (e.g. you cannot focus to infinity or
to the minimum object distance of your lens),
please proceed as follows:
Set the focus of your lens to infinity. After
that, look for an object in infinity and generate
a sharp image by turning the adapter. Use the
rearmost ring to fix the setting.
Matching lenses with automatic diaphragm:
Nikon: all Nikkor lenses of type D and type G (not for type E, this one
is only electronic).
Zeiss: all ZEISS ZF.2 lenses (Otus, Milvus, Interlock, Distagon,
Planar).
Sigma: only lenses, which already have a manual diaphragm ring; all
other lenses have got an aperture control lever, but which does not
spring back, if you turn the aperture ring at the adapter.
Tamron: only some lenses provide automatic diaphragm (no lens
family):
• A012 -> SP 15-30mm F/2.8 Di VC USD
• A007 -> SP 24-70mm F/2.8 Di VC USD
• A009 -> SP 70-200mm F/2.8 Di VC USD
• A011 -> SP 150-600mm F/5-6.3 Di VC USD
• F012 -> SP 35mm F/1.8 Di VC USD
• F013 -> SP 45mm F/1.8 Di VC USD
F017 -> SP 90mm F/2.8 Di MACRO 1:1 VC USD
• B001 -> SP AF 10-24mm F/3.5-4.5 Di II LD Aspherical [IF]
• B005 -> SP AF 17-50mm F/2.8 XR Di II VC LD Aspherical [IF]
• G005 -> SP AF 60mm F/2.0 Di II LD [IF] Macro 1:1
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