Enabling the use of daylight-balanced film under tungsten-lit conditions, this 127mm 80C Color Conversion Filter from Tiffen is a cooling filter used to increase the color temperature from 3800K to 5500K. The blue color of the filter has a filter factor of 2x, requiring an additional 1 stop of exposure to achieve normal results.

The filter is constructed using Tiffen's ColorCore technology, which involves lamenting the filter material between two pieces of optical glass, grounding flat to a tolerance of 1/10,000th of an inch, and mounting within an aluminum alloy ring.

Cooling Color Conversion Filter    3800K to 5500K Color Temp Increase    Balances Daylight Film in Tungsten Light    2x Filter Factor, +1 Stop    Optical Glass, ColorCore Technology    127mm Front Filter Threads    Aluminum Ring

Blue color conversion filter increases color temperature and provides a cooling effect.

Converts 3800K to 5500K for using daylight-balanced film under tungsten lighting.

Filter factor of 2 requires approximately 1 stop of additional exposure to maintain normal results.

ColorCore technology, which permanently laminates the filter material between two pieces of optical glass, maintains image clarity, accuracy, and consistency.

Aluminum filter ring is both lightweight and durable.

Related Questions and Answers

Q: 1. Are the front filter threads reversed, like they are on the camera?

A: The front threads on the TCL-X100 II are able to accept a filter in front easily.

Q: 2. Does this fit on the Leica Q's 49mm thread?

A: This is only designed for the Sony FE 28mm f/2 lens.

Q: 3. I've been using the 28mm FE on my A6400 camera(aps-c/42mm) , can I attached this to the lens and get a a 30.5mmm focal point?

A: On the Sony aps-c bodies the 21mm ultra wide conversion lens will give you 31.5mm. I used this combo on both full frame and aps-c bodies and it works great.

Q: 4. What part do I need to replace the rear lens cap?

A: You want a Rear Lens Cap for E-Mount Cameras, Sony part number ALC-R1EM.

Q: 5. Can I use this converter with Sony RX1, or other e-mount FF lenses?

A: This is designed specifically for the FE 28mm f/2 lens *only*

Q: 6. Will this work on the Sony NX-80?

A: Yes it will. The Sony NX-80 has a 62mm filter thread and this wide angle adapter comes with a 62-72mm Step-Up Ring.

Q: 7. Is the X100 II Tele lens weather resistant?

A: Yes. This lens is weather sealed.

Q: 8. Is anyone using this with hi-res A7r IV or V? How does this lens+converter combination work on these cameras? Thanks.

A: The Sony 21mm Ultra-Wide Conversion Lens for FE 28mm f/2 Lens is compatible when used with the Sony 28mm f2 lens on a full frame camera such as the A7R4 and A7R5.

Q: 9. Does this work with the original X100?

A: yes. Only difference with the version II is it has embedded chip that tells newer models that it's attached.

Q: 10. Does it reduces the camera's max aperture? Similar to how Canon extenders reduce the aperture by 1 or 2 stops

A: Works at f/2 and f/16 without issues. Love the lens!