The Tiffen 3 x 3" 82 Light Balancing Filter helps to increase the color temperature by 100K in order to cool the image slightly in order to match the color quality of illumination. When using an 82 filter, you will be able to attain 3200K balance when the prevailing light source is 3100K. The cooling effect of this filter requires a 0.3-stop increase in exposure for normal results.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. It measures 3 x 3" / 76.2 x 76.2mm.

Cooling Light Balancing Filter    Adds 100K to Convert 3100 to 3200K    ColorCore Technology

Light balancing filter increases color temperature and provides a cooling effect.

Adds 100K in order to attain 3200K color balance from 3100K illumination.

Filter factor of 1.3 requires a 0.3-stop increase in exposure.

Related Questions and Answers

Q: 1. Is this lens compatible with a Sony FS7 M2?

A: Yes, the ZEISS CP.3 lenses with E-mount will fit directly to any of the Sony video cameras, including the FS5, FS7 and FX9.

Q: 2. Is using the baseplate bracket recommended or can it hold its weight safely on its own?

A: We recommend supporting the ZEISS LWZ.3 Lightweight Zoom - either with your hand, or with a support bracket. This is especially the case when the lens is used with a 'still photo' style camera mount, such as the EF or E bayonet style mounts. These mounting options are typically less robust than a PL mount and the support will prevent any movement of the lens in the mount while racking focus or zoom.

Q: 3. Do CP.3's allow for a protective filter to be screwed on?

A: No, for any filters you will have to use a matte box.

Q: 4. do these have a front thread?

A: Zeiss CP.3 Lenses do not have a front thread.

Q: 5. Is the arri speed booster is compatible with the Zeiss lwz 3 21-200 t/2.9-3.9 PL mount lens,,,? , What is the circle of image produce by this,28.5 mm, super 35 or31 mm at the wide end

A: this is a S35 Zoom it will not cover any sensors larger than s35mm. The circle of illumination is designed around s35 and nothing larger

Q: 6. With the Zeiss CP.2 Super Speeds being discontinued, does Zeiss intend on releasing a CP.3 Super Speed line to take their place?

A: there has been no official statement from Zeiss about a Cp.3 line of super speeds

Q: 7. Does this lens have a filter thread so that don't need a matte box?

A: Like all cine style lenses, the ZEISS CP.3 lenses do not incorporate filter threads. A matte box and cut filters are the most common accessories used.

Q: 8. Is this lens rectilinear?

A: Yes, the ZEISS CP.3 2.9/15 is a rectilinear design with well controlled geometric distortion.

Q: 9. Does this connect to Canon’s servo lenses, or do I need three separate motors?

A: The Teradek RT FIZ Wireless Lens Control Kit with CTRL.3, MDR.X & MOTR.S is designed to work with Cinema lenses. Servo zoom lenses would have their own control options from Canon for control. Also, you would need one motor for IRIS, Zoom, and focus if you wanted to control these lens functions.

Q: 10. Does this lens send metadata to bmpcc 4k?

A: The ZEISS CP.3 XD lenses transfer meta data using the Cooke /i Technology protocol. This is available only on select cameras using a PL mount. The BMPCC with MFT mount does not support the /i Technology protocol and neither does the standard ZEISS CP.3 EF mount lens. You could use the BM Ursa Mini Pro with PL mount along with the ZEISS CP.3 XD PL and then there would be a meta data exchange.