The LEE Filters 281 Three Quarter Blue Filter 48" x 25' Rollfrom LEE Filters 281 Three Quarter Blue Filter 48" x 25' Rollis uniform in color and has a mired shift value of -112. It can be applied over a light fixture to purposely create a cool cast over a scene. This filter is constructed from polyester that is heat resistant to 356°F and is delivered as a 48" x 25' roll on a 1" core.

The filter is useful for converting tungsten light sources with a color temperature of 3200K to 5000K daylight. Under 3200K tungsten light, the 281 Three Quarter Color Temperature Blue Filter exhibits a 0.4 density and transmits light at 40.3%. Under 6774K Source C light, it exhibits a 0.34 density and transmits light at 45.5%.

3200K Color Temperature to 5000K    -112 Mired Shift    Can Cool a Scene    0.4 Density for 3200K Tungsten    40.3% Light Transmission for 3200K    0.34 Density for 6774K Source C    45.5% Light Transmission for 6774K    Heat Resistant to 356°F    Polyester Construction

Related Questions and Answers

Q: 1. Does it comes in pairs?

A: Correct. This is a pair of replacement fasteners.

Q: 2. Can the adapter rings for LEE85 system be used with the LEE Seven5 system (already expired) ?

A: Unfortunately no, the Lee Seven5 holder will not fit the 85mm adapter.

Q: 3. Will this kit vignette on a Leica M with 21mm lens?

A: I purchased the Seven5 Deluxe Kit earlier this year for use with my Fuji X100T and it works great... I have a Leica MP (film) with no way to preview, so I didn't consider the filter system for that kit.Measurements: the depth of the adapter and filter holder is the same as a standard (not slim) filter - 5 mm (7.5 mm including the threads). The filter holder has space for two filters but it looks like you can remove one of the holders to make the overall depth smaller. The space between the filter holder inside edge is 66.9 mm at a height of 13 mm from the lens (15.5 mm if you include the threads).Sorry I could not be of more help... have fun if you go in that direction...

Q: 4. What is the filter factor for this filter??? Is any adjustment in exposure required?

A: Lee says there is no filter factor for the Elements Circular Polarizer Filter (72mm). But this filter will block 1 stop of light at the maximum density setting.

Q: 5. can it be used with 10-18mm or a 18-135mm 67mm lens on a canon 7d?

A: The LEE Filters Seven5 Deluxe Kit is designed for use on compact interchangeable lens cameras, such as mirrorless cameras. However, as the LEE Filters Seven5 system has filter rings for lenses between 37mm-72mm (along with a few custom rings for certain mirrorless digital cameras), you may purchase the correct adapter ring for use on your lenses. If you are referring to the Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens and the Canon EF-S 18-135mm f/3.5-5.6 IS Lens (which has a 67mm filter thread), the LEE Filters 67mm Seven5 Adapter Ring, B&H # LEARS567, would be the correct adapter ring for your stated needs.

Q: 6. Will this fit on my Sigma 24-70 lens?

A: Yes, the Lee 100 Landscape Kit will fit a Sigma 24-70mm f/2.8 Lens by adding the LEE Filters 82mm Wide-Angle Lens Adapter Ring for 100mm System Filter Holder, BH # LEARWA82. https://bhpho.to/3CVvrG1

Q: 7. My camera has a fixed 49mm lens. Will this work? do I need an adapter?

A: Yes, you need a 49mm adapter. Click the link below to view; https://bhpho.to/2YWAePT

Q: 8. How does this compare to the Progrey Titan CPL?

A: I'm sorry but B&H does not carry Progrey filters so i cannot comment but I can say that Lee filters are very good and have been used by professionals for many years. Other quality brands include Nisi, Haida, Formatt and H & Y.

Q: 9. How many mm thick are these filters?

A: The LEE Filters 150 x 150mm 0.9 Neutral Density Filter is 2mm thick.

Q: 10. Can the Seven5 system be used on a Canon 60D with a EFS 10-18mm lens? I know that there are suitable adapter rings, but I am wondering if there will be a vignetting effect, or if the crop factor of the camera will eliminate it.

A: The Seven5 kit can be used with the 10-18mm lens via the 67mm lens adapter. However, even with the 1.6x crop factor there is likely going to be some vignetting at the wider end of the lens. This effect would be diminished when using the LEE foundation kit with the 67mm wide angle specific lens adapter instead of the Seven5 kit.