Use B4 mount box lenses or other long-range zoom lenses with a B4 mount on your PL-mount Super 35 camera with the Musashi TL-OM4K B4 to PL-Mount Expanderfrom Musashi Optical. B4-type lenses are perfect for sports and other event coverage where the camera cannot get close to the action, and most are capable of beyond 4K quality up to 5.7 and 6K with Super 35 cameras.

The OptMag Plus OM4K has a new system of AR multi-coated optics designed to effectively increase the image circle of the lens while maintaining the same angle of view as the B4 lens on a Super 35 sensor camera and keeping the highest level of image quality for modern 4K and beyond recording. It is simple to use and mounts between the camera and lens to maintain all focus and other controls of the B4 lens. The OptMag Plus is compatible with cameras such s the ARRI ALEXA, Sony PMW-F3, F55/65, RED RAVEN, Panasonic VariCamLT in CineLive Config, and Canon C300PL.

Increase Image Circle of B4 Lens    Use B4 Lens on PL Mount Camera    High Resolution Beyond 4K, up to 6K    Covers 35 x 29mm Super 35 Sensor

Related Questions and Answers

Q: 1. will this Tokina PL to PL Mount 1.6X expander work whit sigma cine zooms 18-35mm and 50-100mm?

A: Tokina has not made a list of compatible lenses. Supplied with the expander is a gauge so you can check before hand. If you have the lenses, but not the Expander, you can measure 20mm from the tip of the lens to the flange. If longer, no, you cannot use the Expander. If shorter, yes, you can use the Expander. They do say that most PL Zooms such as the ones you are asking about will fit while many PL Primes will not.

Q: 2. what if I use this with super 16 lenses and an MFT imager or super 35 imager?

A: The Tokina PL to PL Mount 1.6X Expander is for Super35 format PL lenses with full-frame 6-8K HD PL-mount cameras. There is no information as to use with other lenses.

Q: 3. Can this be used with the Cooke 18-100mm T3 on A7S?

A: as long as the PL lens is within 21mm of the PL flange the Tokina PL to Sony E Mount 1.6X Expander will work.

Q: 4. Can this be used to extend a full-frame lens like a typical tele-extender? (i.e. a FF 12mm would become a FF 19mm)

A: No, the Tokina Canon EF to PL Mount 1.6X Expander is designed for use with super 35mm lenses only. If a full frame lens is used, there will be heavy vignetting.

Q: 5. Would this work to expand a Canon EF-S lens to cover FF?

A: The Tokina Canon EF to PL Mount 1.6X Expander is designed to work with Canon EF mount lenses. The EF-S mount has a flange that will dip too low into the adapter and will not allow it to mount to it.

Q: 6. Can this expander safely be used on Zeiss super speeds? Specifically the 18/25/35mm which have deep rear elements.

A: This adapter is for Super 35 format-compatible PL lenses to be used on Full Frame PL-mount cameras that are 6K to 8K in resolution. It performs best when used with lenses with a T2.0 or larger aperture and when stopped down to T2.8 or less.

Q: 7. Can this be used to adapt a Canon FD mount EF or Contax CY mount EF to a Canon C700 GS PL mount or canon C300 mkii pl mount?

A: The Tokina Canon EF to PL Mount 1.6X Expander will not work because it is meant to adapt EF-S lenses to full frame cameras. The C300 and the C700 are both Super 35 cameras. thus this will not work.

Q: 8. Is this essentially the same thing as a tele-extender?

A: The Tokina Canon EF to PL Mount 1.6X Expander uses the principle of an tele-extender to expand the image circle of a Super35 lens so that it covers the larger full frame image circle. But what it is really is a method for mounting a EF lens on to a PL mount camera.

Q: 9. Is this compatible with Arri Alura 45-250?

A: This adapter works with Super 35 format-compatible PL lenses. The Arri Alura 45-250 has a PL Mount and covers a Super 35mm sensor. That lens will work with this adapter, however the camera being uses is important as well. This adapter is designed to work with Full Frame PL mount Cameras with a 6-8K sensor.

Q: 10. Are these compatible with Atlas anamorphic's A-set?

A: The Tokina PL to PL Mount 1.6X Expander is meant for scaling super35mm lenses to the larger full-frame sensor size of PL full-frame cameras, but the Atlas Orion Anamorphic Cine Lens set is full-frame and compatible with full-frame PL cinema cameras so no adapter is needed.