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POV small profile
finally! by Steffan Hewitt, Polecam
T here are a
in our industry where
the requirement for a
small low profile broadcast quality
HD camera is needed, whether it be
for documentaries, natural history, in
car, on board, covert, news, drama,
underwater, on a jib arm or small
remote head – the list goes on, and
expands from there to include the
many industrial applications, defence,
medical, security, avionics, marine,
research and so on.
It is no problem finding a good HD
camera to fulfil those requirements
from respected camera manufacturers
like Toshiba, Sony and Panasonic.
If you go to a small camera specialist,
you can find good HD prime
lenses to match, but up until now,
finding a compact HD zoom lens to
complement your HD camera has
been a non-starter – very frustrating
for the many small HD camera users.
The big lens manufacturers have
not entered this market because the
potential numbers for them don’t
justify the investment of design, tooling
up and manufacturing cost.
Enter the UK Chesham based lens
company Resolve Optics. The
company has shown itself to have the
proven and rare capability to produce
small quantities of high performance,
mounted lens systems with the look,
feel and quality equivalent to the
best professional photographic and
broadcast TV lenses.
They have been receiving requests
for such an HD zoom lens ever
since small HD cameras became
available, but these requests were for
various sensor sizes. Mark Pontin,
MD of Resolve, made the decision
to design a lens that was compact,
with a sensible focal length and zoom
range, which should produce a high
quality HD image, which should be
as adaptable as possible to embrace
different cameras and sensor sizes,
and, equally important, to be reliable.
It took two years to achieve this goal,
but now the Z10-HDcf Compact HD
Zoom lens has been launched and
is globally distributed exclusively by
Polecam Systems in the UK.
The lens design
Floating cell technology has been used
which allows the moving cells to be
compact and light, and that in turn
allows smaller motors to be utilised to
drive the movements. Low dispersion
glass has been used to ensure that the
length of the lens remains compact
and yet provides a quality HD image.
The design produces an impressive
f/1.8 aperture maintained throughout
4/5th of the zoom travel, with a
minimum aperture of f/2.8 over the
final 1/5th of the zoom.
Furthermore, to make the Z10 as
adaptable as possible the zoom
module was designed with three
interchangeable rear cells for 1/3”
3chip, 1/3” single chip and 2/3” single
chip sensors, and these are customer
changeable. There is also a standard
M37 filter thread on the front of the
lens for wide angle adapters such as
Resolve’s 287 0.5X adapter. At 45mm
square and 100 mm (2/3” version)
long the Z10-HDCF is truly compact
yet has the optical performance of a
much larger lens.
This lens offers a broad potential not
only in the broadcast arena but in all
the parallel industries using AV, none
more so than the medical market. The
need to train surgeons, surgical staff
as well as medical sales personnel
in operative techniques is essential
but the demand for higher quality is
always ever present. Medical 1/3”
minicams from the likes of Iconix,
Toshiba, Hitachi, & Sony are now
offered new opportunities. The newer
2/3” cameras such as Indiecam,
Flare, Modula, Cunima, LMP and
the Antelope Pico Hi-Speed camera
have now also got the opportunity for
further market penetration.
For more information on the new
Resolve Optics compact Zoom lens
please take a look at www.polecam.
com/cameras/lenses or visit
BVE 2013 and see for
Polecam’s stand G16.
74 | TV-BAY MAGAZINE