Zoom lenses and minicams


TV-Bay Magazine
Read ezine online
Finding a quality tracking zoom lens for the minicams made for the likes of Toshiba/Iconix/Hitachi/Sony has been an uphill battle. The cameras have been made primarily for the medical imaging market for microscopes and endoscopes but adopted by the broadcast industry as a high end minicam. However lenses were always a problem. Fujinon made the TF range of 1/3” prism corrected lenses for this market but no zoom lens. A zoom lens project, and specifically now with HD, is just not big enough for the big players such as Fujinon and Canon but now there is something in the market.
Over several years Resolve Optics Ltd has received numerous enquiries for a compact high definition zoom lens for various sensor formats. The problem was that none of the individual enquiries could justify the expense of developing the lens for just their application so Resolve decided to design and develop the zoom lens themselves. Historically Polecam and Resolve have worked together to bring specialist minicam lenses to the market but the HD zoom has been the Holy Grail.
The many enquiries received for a compact zoom were slightly different so taking everything on board Resolve decided that the lens must be compact with a sensible focal length and zoom range, produce a high quality HD image, it should be as adaptable as possible and most importantly reliable.
After two years of design and development the Z10-HDCF was launched. This 10X, C-mount lens design utilises cutting edge technology such as floating cells and low dispersion glass which enabled the lens to be kept very compact. Floating cell technology allows the moving cells to be compact and light which in turn allows smaller motors to be used to drive the movements. Low dispersion glass is used to keep the length of the lens compact and still provide a quality HD image.
The design also allows for an impressive f/1.8 aperture to be maintained throughout 4/5th of the zoom travel with a minimum aperture of f/2.8 over the final 1/5th of the zoom.
To make the Z10 as adaptable as possible the zoom module was specifically designed to work with three interchangeable rear cells for 1/3” 3chip, 1/3” single chip and 2/3” single chip sensors. The rear cells 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.
So, where's the market for a lens like this? Obviously Broadcast for TV and Film is an obvious but horizontal marketing is also key and the medical industry has already shown keen interest in this lens. Polecam, minicams and zoom lenses have been used extensively for medical filming but getting the right combination has always been a struggle compromising on lenses, cameras , quality and performance. The Sony HD10/11 zoom module has been used at great length but an increase in camera quality has been constantly called for. 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.
The Z-10 from Resolve has now addressed that market. Very cleverly, the interchangeable rear element to convert between 1/2” and 2/3” as well as single chip and prism cameras is key here. Medical 1/3” minicams from the likes of Iconix, Toshiba, Hitachi, & Sony etc now have a new lease of life. 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.

Tags: iss070 | polecam | Z10-HDCF | fujinon | canon | resolve optics | minicam | N/A
Contributing Author N/A

Read this article in the tv-bay digital magazine
Article Copyright tv-bay limited. All trademarks recognised.
Reproduction of the content strictly prohibited without written consent.

Related Interviews
  • Polecam Toshiba Minicams at BVE 2014

    Polecam Toshiba Minicams at BVE 2014

  • Polecam Antelope Pico at IBC 2014

    Polecam Antelope Pico at IBC 2014

  • Polecam: Z10 zoom lens at NAB 2013

    Polecam: Z10 zoom lens at NAB 2013

  • Polecam Slow Motion Minicams at BVE 2014

    Polecam Slow Motion Minicams at BVE 2014

  • Polecams range of accessories and minicams at IBC 2013

    Polecams range of accessories and minicams at IBC 2013

  • Polecam at IBC 2015

    Polecam at IBC 2015

  • Polecam talk accessories on BroadcastShow LIVE 2013

    Polecam talk accessories on BroadcastShow LIVE 2013

  • Polecam at IBC 2016

    Polecam at IBC 2016

  • Guided Tour of the Polecam Stand at BVE 2016

    Guided Tour of the Polecam Stand at BVE 2016

  • Polecam presents award to AMS Pictures at NAB 2014

    Polecam presents award to AMS Pictures at NAB 2014

  • Polecam talk high speed on BroadcastShow LIVE at IBC 2013

    Polecam talk high speed on BroadcastShow LIVE at IBC 2013

  • Polecam at BVE 2013

    Polecam at BVE 2013

  • Polecam at BVE North 2012

    Polecam at BVE North 2012

  • Polecam at IBC 2012

    Polecam at IBC 2012

  • Polecam at NAB 2012

    Polecam at NAB 2012

  • Polecam at BVE 2012

    Polecam at BVE 2012

  • Polecam at BVE North 2011

    Polecam at BVE North 2011

  • Polecam at IBC2011

    Polecam at IBC2011

  • Kit Overview from IBC 2015

    Kit Overview from IBC 2015

  • Steffan does the Surf Forecast

    Steffan does the Surf Forecast

  • Fujinon 18-55 Lens at BVE 2017

    Fujinon 18-55 Lens at BVE 2017

  • Canon on BroadcastShow LIVE at IBC 2013

    Canon on BroadcastShow LIVE at IBC 2013

  • Den Lennie considers what kit and cameras to buy for 2015

    Den Lennie considers what kit and cameras to buy for 2015

  • Lens Adaptor at BVE 2013

    Lens Adaptor at BVE 2013

  • AJA at BVE 2013

    AJA at BVE 2013

  • Hireacamera at BVE North 2012

    Hireacamera at BVE North 2012

  • Featured Clip: Geoff Boyle comments on NAB 2012

    Featured Clip: Geoff Boyle comments on NAB 2012

  • Tiffen at NAB 2012

    Tiffen at NAB 2012

  • Jonathan Harrison at BVE North 2011

    Jonathan Harrison at BVE North 2011

  • MTF at IBC2011

    MTF at IBC2011

  • CameraCorps at BVE 2015

    CameraCorps at BVE 2015


Related Shows
  • The KITPLUS Show discussing streaming from ingest through to delivery

    The KITPLUS Show discussing streaming from ingest through to delivery


Articles
Switching to Internet Based Distribution
Chris Clark

"An IP status check for the broadcast industry", "Resistance is futile", "IP points the way forward for the broadcast industry"...

Yes, we've read the headlines too. But rather than force you into submission, scare you, or leave you feeling like you have no other choice, we want to give you the information that helps you to make a sensible decision about Internet-based distribution.

So what’s stopping you from making the switch right now?

Tags: iss135 | ip | internet | distribution | cerberus | Chris Clark
Contributing Author Chris Clark Click to read or download PDF
21st Century Technology for 20th Century Content
James Hall A big challenge facing owners of legacy content is rationalising and archiving their tape and film-based media in cost effective and efficient ways, whilst also adding value. Normally the result of this is to find a low cost means of digitising the content – usually leaving them with a bunch of assets on HDD. But then what? How can content owners have their cake and eat it?
Tags: iss135 | legacy | digitising | digitizing | archive | James Hall
Contributing Author James Hall Click to read or download PDF
Future proofing post production storage
Josh Goldenhar Advancements in NVMe (Non-Volatile Memory Express), the storage protocol designed for flash, are revolutionising data storage. According to G2M Research, the NVMe market will grow to $60 billion by 2021, with 70 percent of all-flash arrays being based on the protocol by 2020. NVMe, acting like steroids for flash-based storage infrastructures, dynamically and dramatically accelerates data delivery.
Tags: iss135 | nvme | sas | sata | it | storage | post production | Josh Goldenhar
Contributing Author Josh Goldenhar Click to read or download PDF
Your two week editing future
Alex Macleod

So here we are - January again! Usually a good time to reflect on the year just gone by, and a good time to look forward to the coming months as the new year begins.

When I was reflecting on my 2018, and when thinking about what to write for my first article for Kit Plus - I kept coming back to one theme - organisation.

Tags: iss135 | editing | mediacity training | premiere pro | dit | Alex Macleod
Contributing Author Alex Macleod Click to read or download PDF
Test, Measurement and Standards
Alan Wheable The Alliance for IP Media Solutions (AIMS), is a non-profit trade alliance that fosters the adoption of one set of common, ubiquitous, standards-based protocols for interoperability over IP in the media and entertainment, and professional audio/video industries.
Tags: iss135 | omnitek | aims | SNMP | hdr | ai | Alan Wheable
Contributing Author Alan Wheable Click to read or download PDF