User Manual

2
The Vello Accelerator Lens
Adapter is for attaching
Nikon F-Mount lenses to
Sony’s E-mount cameras.
It allows a nearly full-frame
field of view on APS-C
crop-sensor cameras by
magnifying the angle of
view by 0.7×. This also
provides an extra stop of
light without decreasing
image quality. For example,
mounting a 50mm f/.4 lens
to an APS-C sensor will
usually give you a 75mm
angle of view. By adding the
Accelerator, you eectively
keep it close to the original
focal length of 50mm with a
stepped-down f-stop of f/.0.
This is a great advantage
for the widely accepted
APS-C crop format.
The Vello Accelerator
aords additional benefits,
with a manual aperture
ring for selecting the f-stop
in /2-stop increments.
It’s compatible with the
Nikon’s F-Mount lenses,
including AI and non-AI. It
has four elements in four
groups to maintain image
quality. And the detachable
tripod foot will work with
most brands of ball heads.
THANK YOU FOR CHOOSING VELLO