1：The adapter ring is equipped
with 3.6x high-definition optical glass, expands the image field of the B4 2/3
port lens, and the B4 lens can focus infinitely when connected to an Full Frame Sony E-mount Cinema.The image
quality is not weakened, The picture quality is better，the
aperture is reduced by 3 File, the maximum imaging circle is 45mm, and it
supports Full Frame movie cameras。（Maximum aperture supports F1.8）
2：The
XPimage B4-E Full Frame adapter ring is specifically
designed for high-resolution B4 2/3-inch lenses to be mounted on modern Full
Frame Sony E-mount Cinema. It expands the field of view by 3.6x, allowing a
maximum imaging area of 45mm. The optical system optimizes color shifts typical
of B4 lenses. The converter allows a maximum aperture of f/1.8. It consists of 8
groups with 15 high-definition glass elements made from high refractive index
and low dispersion glass, optimized using advanced optical design software to
achieve maximum contrast transmission and minimal aberrations. Special software
was used for tolerance and stray light analysis during the design phase to
eliminate ghosting and reflections, ensuring optimal imaging performance.
Note:
To use
this adapter, you need an external battery, a power connection cable for the B4
lens, or a power interface on the movie camera. The B4 lens can talent use
servo-controlled zoom with these setups. (When we ship, we will include
a B4 lens power cable)
Features
1.
Durable, high quality
2.
Made of Alum and Steel, with perfect surface finishing and super precise
design
3.
Focus infinity feature is available for use with our camera adapter
4. 3.6x
high-definition optical glass,
5.No
black circle when adapting to Full Frame Cinema