Enabling the use of daylight-balanced film under tungsten-lit conditions, this 55mm 80B Color Conversion Filter from Tiffen is a cooling filter used to increase the color temperature from 3400K to 5500K. The blue color of the filter has a filter factor of 3x, requiring an additional 1.6 stops 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    3400K to 5500K Color Temp Increase    Balances Daylight Film in Tungsten Light    3x Filter Factor, +1.6 Stop    Optical Glass, ColorCore Technology    55mm Front Filter Threads    Aluminum Ring

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

Converts 3400K to 5500K for using daylight-balanced film under tungsten lighting.

Filter factor of 3 requires approximately 1.6 stops 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. is the lens sealed against rain for example?

A: Hi there, This lens has Dust and Moisture-Resistant Construction but NOT rain-resistance. Regards, Jen

Q: 2. Will the EF-S17-55 operate perfectly with a Sony Fs7? Image stabilization and auto focus are a must. I also need a recommendation for a Canon to Sony E Mount

A: That, lens will work on the FX7. The adapter is very important as to what works and does not work. This is a good adapter. But like most it does not work with every lens. Metabones Canon EF/EF-S Lens to Sony E Mount T CINE Smart Adapter (Fifth Generation) BH #MEMBEFEBT6 • MFR #MB_EF-E-BT6 https://bhpho.to/3wCnwqv

Q: 3. Is this lens compatible with the Canon 1 D Mark 4?

A: No. The 1D Mark IV does not support EF-S lenses. You'll need an EF mount lens.

Q: 4. Is the lens compatible with 80D camara?

A: Yes, the Canon EF-S 17-55mm f/2.8 IS USM Lens is fully compatible for use with the Canon EOS 80D DSLR camera.

Q: 5. Will this lens work on a Canon M50?

A: Not unless you have an EF to EFM adapter.

Q: 6. How is image quality (IQ) compared to Tamron 17-55mm f/2.8? I own the Tamron and it is OK but I'd like better IQ. However, I'd hate to waste money on the far more expensive Canon if the IQ is comparable. Anyone have experience with both?

A: Unfortunately I do not own the Tamron lens, so I cannot make a direct comparison. I do like the Canon lens, like you I am not sure that it commands the added expense. I believe if you are very critical of IQ you would find the Canon is a subjectively better lens. You can make a comparison of both lens' photos on the DXO mark site.

Q: 7. can this be used with a Nikon film camera like the Nikon F2?

A: No it can not , only Sony E mount Cameras

Q: 8. How much does this lens weigh?

A: Weight (Approx.) : 10 oz. (281g)

Q: 9. How does this lens do with videography such as weddings and interviews?

A: It's a great lens for video. I've used it for interviews, promos, and other such things. Great in low light and a really crisp image. Should be perfect for weddings. Only downside is that it doesn't have IS, so be careful when you are shooting handheld.

Q: 10. I have 77D,kit lenses 18-55,55-250,50 mm prime,tamron 16-300 ,would this lens be worth buying?

A: The Canon EF-S 17-55mm f/2.8 IS USM Lens is a good lens for you to add to your collection if you are shooting in low light.